171 research outputs found
Observation and branching fraction measurement of the decay Ξb- → Λ0 bπ -
- Author
- Aaij R
- Abdelmotteleb ASW
- Abellan Beteta C
- Abudinen F
- Ackernley T
- Adeva B
- Adinolfi M
- Adlarson P
- Afsharnia H
- Agapopoulou C
- Aidala CA
- Ajaltouni Z
- Akar S
- Akiba K
- Albicocco P
- Albrecht J
- Alessio F
- Alexander M
- Alfonso Albero A
- Aliouche Z
- Alvarez Cartelle P
- Amalric R
- Amato S
- Amey JL
- Amhis Y
- An L
- Anderlini L
- Andersson M
- Andreianov A
- Andreola P
- Andreotti M
- Andreou D
- Ao D
- Archilli F
- Artamonov A
- Artuso M
- Aslanides E
- Atzeni M
- Audurier B
- Bacher D
- Bachiller Perea I
- Bachmann S
- Bachmayer M
- Back JJ
- Bailly reyre A
- Baladron Rodriguez P
- Balagura V
- Baldini W
- Baptista de Souza Leite J
- Barbetti M
- Barbosa IR
- Barlow RJ
- Barsuk S
- Barter W
- Bartolini M
- Baryshnikov F
- Basels JM
- Bassi G
- Batsukh B
- Battig A
- Bay A
- Beck A
- Becker M
- Bedeschi F
- Bediaga IB
- Beiter A
- Belin S
- Bellee V
- Belous K
- Belov I
- Belyaev I
- Ben-Haim E
- Benane G
- Bencivenni G
- Berezhnoy A
- Bernet Andres S
- Bernet R
- Berninghoff D
- Bernstein HC
- Bertella C
- Bertolin A
- Betancourt C
- Betti F
- Bex J
- Bezshyiko I
- Bhom J
- Bian L
- Bieker MS
- Biesuz NV
- Billoir P
- Biolchini A
- Birch M
- Bishop FCR
- Bitadze A
- Bizzeti A
- Blago MP
- Blake T
- Blanc F
- Blank JE
- Blusk S
- Bobulska D
- Bocharnikov V
- Boelhauve JA
- Boente Garcia O
- Boettcher T
- Bohare A
- Boldyrev A
- Bolognani CS
- Bolzonella R
- Bondar N
- Borgato F
- Borghi S
- Borsato M
- Borsuk JT
- Bouchiba SA
- Bowcock TJV
- Boyer A
- Bozzi C
- Bradley MJ
- Braun S
- Brea Rodriguez A
- Breer N
- Brodzicka J
- Brossa Gonzalo A
- Brown J
- Brundu D
- Buonaura A
- Buonincontri L
- Burke AT
- Burr C
- Bursche A
- Butkevich A
- Butter JS
- Buytaert J
- Byczynski W
- Cadeddu S
- Cai H
- Calabrese R
- Calefice L
- Cali S
- Calvi M
- Calvo Gomez M
- Cambon Bouzas J
- Campana P
- Campora Perez DH
- Campoverde Quezada AF
- Capelli S
- Capriotti L
- Carbone A
- Carcedo Salgado L
- Cardinale R
- Cardini A
- Carniti P
- Carus L
- Casais Vidal A
- Caspary R
- Casse G
- Cattaneo M
- Cavallero G
- Cavallini V
- Celani S
- Cerasoli J
- Cervenkov D
- Chadwick AJ
- Chahrour I
- Chapman MG
- Charles M
- Charpentier P
- Chavez Barajas CA
- Chefdeville M
- Chen C
- Chen S
- Chernov A
- Chernyshenko S
- Chobanova V
- Cholak S
- Chrzaszcz M
- Chubykin A
- Chulikov V
- Ciambrone P
- Cicala MF
- Cid Vidal X
- Ciezarek G
- Cifra P
- Ciullo G
- Clarke PEL
- Clemencic M
- Cliff HV
- Closier J
- Cobbledick JL
- Cocha Toapaxi C
- Coco V
- Cogan J
- Cogneras E
- Cojocariu L
- Collaboration L
- Collins P
- Colombo T
- Comerma-Montells A
- Congedo L
- Contu A
- Cooke N
- Corredoira I
- Correia A
- Corti G
- Cottee Meldrum JJ
- Couturier B
- Craik DC
- Cruz Torres M
- Currie R
- D'Ambrosio C
- d'Argent P
- Da Silva CL
- Dadabaev S
- Dai L
- Dai X
- Dall'Occo E
- Dalseno J
- Daniel J
- Danilina A
- Davidson A
- Davies JE
- Davis A
- De Aguiar Francisco O
- de Boer J
- De Bruyn K
- De Capua S
- De Cian M
- De Freitas Carneiro Da Graca U
- De Lucia E
- De Miranda JM
- De Paula L
- De Serio M
- De Simone D
- De Simone P
- De Vellis F
- de Vries JA
- Dean CT
- Debernardis F
- Decamp D
- Dedu V
- Del Buono L
- Delaney B
- Dembinski HP
- Denysenko V
- Deschamps O
- Dettori F
- Dey B
- Di Nezza P
- Diachkov I
- Didenko S
- Ding S
- Dobishuk V
- Docheva AD
- Dolmatov A
- Dong C
- Donohoe AM
- Dordei F
- dos Reis AC
- Douglas L
- Downes AG
- Duan W
- Duda P
- Dudek MW
- Dufour L
- Duk V
- Durante P
- Duras MM
- Durham JM
- Dutta D
- Dziurda A
- Dzyuba A
- Easo S
- Eckstein E
- Egede U
- Egorychev A
- Egorychev V
- Eirea Orro C
- Eisenhardt S
- Ejopu E
- Ek-In S
- Eklund L
- Elashri M
- Ellbracht J
- Ely S
- Ene A
- Epple E
- Escher S
- Eschle J
- Esen S
- Evans T
- Fabiano F
- Falcao LN
- Fan Y
- Fang B
- Fantini L
- Faria M
- Farmer K
- Farry S
- Fazzini D
- Felkowski L
- Feng M
- Feo M
- Fernandez Gomez M
- Fernez AD
- Ferrari F
- Ferreira Lopes L
- Ferreira Rodrigues F
- Ferreres Sole S
- Ferrillo M
- Ferro-Luzzi M
- Filippov S
- Fini RA
- Fiorini M
- Firlej M
- Fischer KM
- Fitzgerald DS
- Fitzpatrick C
- Fiutowski T
- Fleuret F
- Fontana M
- Fontanelli F
- Foreman LF
- Forty R
- Foulds-Holt D
- Franco Sevilla M
- Frank M
- Franzoso E
- Frau G
- Frei C
- Friday DA
- Frontini L
- Fu J
- Fuehring Q
- Fujii Y
- Fulghesu T
- Gabriel E
- Galati G
- Galati MD
- Gallas Torreira A
- Galli D
- Gambetta S
- Gandelman M
- Gandini P
- Gao H
- Gao R
- Gao Y
- Garau M
- Garcia Martin LM
- Garcia Moreno P
- Garcia Pardinas J
- Garcia Plana B
- Garcia Rosales FA
- Garrido L
- Gaspar C
- Geertsema RE
- Gerken LL
- Gersabeck E
- Gersabeck M
- Gershon T
- Giambastiani L
- Giasemis FI
- Gibson V
- Giemza HK
- Gilman AL
- Giovannetti M
- Gioventu A
- Gironella Gironell P
- Giugliano C
- Giza MA
- Gizdov K
- Gkougkousis EL
- Glaser FC
- Gligorov VV
- Goebel C
- Golobardes E
- Golubkov D
- Golutvin A
- Gomes A
- Gomez Fernandez S
- Goncalves Abrantes F
- Goncerz M
- Gong G
- Gooding JA
- Gorelov IV
- Gotti C
- Grabowski JP
- Granado Cardoso LA
- Grauges E
- Graverini E
- Grazette L
- Graziani G
- Grecu AT
- Greeven LM
- Grieser NA
- Grillo L
- Gromov S
- Gu C
- Guarise M
- Guenther PA
- Guittiere M
- Guliaeva V
- Guseinov AK
- Gushchin E
- Guz Y
- Gys T
- Hadavizadeh T
- Hadjivasiliou C
- Haefeli G
- Haen C
- Haimberger J
- Haines SC
- Hajheidari M
- Halewood leagas T
- Halvorsen MM
- Hamilton PM
- Hammerich J
- Han Q
- Han X
- Hansmann-Menzemer S
- Hao L
- Harnew N
- Harrison T
- Hartmann M
- Hasse C
- Hatch M
- He J
- Heijhoff K
- Hemmer F
- Henderson C
- Henderson RDL
- Hennequin AM
- Hennessy K
- Henry L
- Herd J
- Heuel J
- Hicheur A
- Hill D
- Hilton M
- Hollitt SE
- Horswill J
- Hou R
- Hou Y
- Howarth N
- Hu J
- Hu W
- Hu X
- Huang W
- Huang X
- Hulsbergen W
- Hunter RJ
- Hushchyn M
- Hutchcroft D
- Ibis P
- Idzik M
- Ilin D
- Ilten P
- Inglessi A
- Iniukhin A
- Ishteev A
- Ivshin K
- Jacobsson R
- Jage H
- Jaimes Elles SJ
- Jakobsen S
- Jans E
- Jashal BK
- Jawahery A
- Jevtic V
- Jiang E
- Jiang X
- Jiang Y
- Jiang YJ
- John M
- Johnson D
- Jones CR
- Jones TP
- Joshi S
- Jost B
- Jurik N
- Juszczak I
- Kaminaris D
- Kandybei S
- Kang Y
- Karacson M
- Karpenkov D
- Karpov M
- Kauniskangas AM
- Kautz JW
- Keizer F
- Keller DM
- Kenzie M
- Ketel T
- Khanji B
- Kharisova A
- Kholodenko S
- Khreich G
- Kirn T
- Kirsebom VS
- Kitouni O
- Klaver S
- Kleijne N
- Klimaszewski K
- Kmiec MR
- Koliiev S
- Kolk L
- Kondybayeva A
- Konoplyannikov A
- Kopciewicz P
- Kopecna R
- Koppenburg P
- Korolev M
- Kostiuk I
- Kot O
- Kotriakhova S
- Kozachuk A
- Kravchenko P
- Kravchuk L
- Kreps M
- Kretzschmar S
- Krokovny P
- Krupa W
- Krzemien W
- Kubat J
- Kubis S
- Kucewicz W
- Kucharczyk M
- Kudryavtsev V
- Kulikova E
- Kupsc A
- Kutsenko BK
- Lacarrere D
- Lafferty G
- Lai A
- Lampis A
- Lancierini D
- Landesa Gomez C
- Lane JJ
- Lane R
- Langenbruch C
- Langer J
- Lantwin O
- Latham T
- Lazzari F
- Lazzeroni C
- Le Gac R
- Lee SH
- Lefevre R
- Leflat A
- Legotin S
- Lenisa P
- Leroy O
- Lesiak T
- Leverington B
- Li A
- Li H
- Li K
- Li L
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- Li PR
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- Li Z
- Lian Z
- Liang X
- Lin C
- Lin T
- Lindner R
- Lisovskyi V
- Litvinov R
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- Lobo Salvia A
- Loi A
- Lomba Castro J
- Long T
- Longstaff I
- Lopes JH
- Lopez Huertas A
- Lopez Solino S
- Lovell GH
- Lu Y
- Lucarelli C
- Lucchesi D
- Luchuk S
- Lucio Martinez M
- Lukashenko V
- Luo Y
- Lupato A
- Luppi E
- Lynch K
- Lyu XR
- Ma R
- Maccolini S
- Machefert F
- Maciuc F
- Mackay I
- Madhan Mohan LR
- Madurai MM
- Maevskiy A
- Magdalinski D
- Maisuzenko D
- Majewski MW
- Malczewski JJ
- Malde S
- Malecki B
- Malentacca L
- Malinin A
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- Manca G
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- Mancuso C
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- Manuzzi D
- Manzari CA
- Marangotto D
- Marchand JF
- Marconi U
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- Massafferri A
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- Mathad A
- Matiunin V
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- Mattioli KR
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- Maurice E
- Mauricio J
- Mazurek M
- McCann M
- Mcconnell L
- McGrath TH
- McHugh NT
- McNab A
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- Meier G
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- Merk M
- Merli A
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- Miao D
- Miao H
- Mikhasenko M
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- Minard MN
- Minotti A
- Minucci E
- Miralles T
- Mitchell SE
- Mitreska B
- Mitzel DS
- Modak A
- Moedden A
- Mohammed RA
- Moise RD
- Mokhnenko S
- Mombaecher T
- Monk M
- Monroy IA
- Monteil S
- Morcillo Gomez A
- Morello G
- Morello MJ
- Morgenthaler MP
- Moron J
- Morris AB
- Morris AG
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- Mu H
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- Murta R
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- Nakada T
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- Needham M
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- Neustroev P
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- Nicolini J
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- Shangase DM
- Shapkin M
- Shchemerov I
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- Shekhtman L
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- Spedicato E
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- Stenyakin O
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- Villa A
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- Volle FC
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- Voropaev N
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- Walton EJ
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- Wang J
- Wang M
- Wang NW
- Wang R
- Wang X
- Wang Y
- Wang Z
- Ward JA
- Watson NK
- Websdale D
- Wei Y
- Westhenry BDC
- White DJ
- Whitehead M
- Wiederhold AR
- Wiedner D
- Wilkinson G
- Wilkinson MK
- Williams I
- Williams M
- Williams MRJ
- Williams R
- Wilson FF
- Wislicki W
- Witek M
- Witola L
- Wong CP
- Wormser G
- Wotton SA
- Wu H
- Wu J
- Wu Y
- Wyllie K
- Xian S
- Xiang Z
- Xie Y
- Xu A
- Xu J
- Xu L
- Xu M
- Xu Z
- Yang D
- Yang S
- Yang X
- Yang Y
- Yang Z
- Yeroshenko V
- Yeung H
- Yin H
- Yu CY
- Yu J
- Yuan X
- Zaffaroni E
- Zavertyaev M
- Zdybal M
- Zeng M
- Zhang C
- Zhang D
- Zhang J
- Zhang L
- Zhang S
- Zhang Y
- Zhao Y
- Zharkova A
- Zhelezov A
- Zheng Y
- Zhou T
- Zhou X
- Zhou Y
- Zhovkovska V
- Zhu LZ
- Zhu X
- Zhu Z
- Zhukov V
- Zhuo J
- Zou Q
- Zucchelli S
- Zuliani D
- Zunica G
- Publication venue
- Publication date
- 01/01/2023
- Field of study
First Measurement of the Charge Asymmetry in Beauty-Quark Pair Production
- Author
- Aaij R
- Adeva B
- Adinolfi M
- Affolder A
- Ajaltouni Z
- Akar S
- Albrecht J
- Alessio F
- Alexander M
- Ali S
- Alkhazov G
- Alvarez Cartelle P
- Alves AA
- Amato S
- Amerio S
- Amhis Y
- An L
- Anderlini L
- Anderson J
- Andreassen R
- Andreotti M
- Andrews JE
- Appleby RB
- Aquines Gutierrez O
- Archilli F
- Artamonov A
- Artuso M
- Aslanides E
- Auriemma G
- Baalouch M
- Bachmann S
- Back JJ
- Badalov A
- Balagura V
- Baldini W
- Barlow RJ
- Barschel C
- Barsuk S
- Barter W
- Batozskaya V
- Battista V
- Bay A
- Beaucourt L
- Beddow J
- Bedeschi F
- Bediaga I
- Belogurov S
- Belous K
- Belyaev I
- Ben-Haim E
- Bencivenni G
- Benson S
- Benton J
- Berezhnoy A
- Bernet R
- Bettler MO
- Bien A
- Bifani S
- Bird T
- Bizzeti A
- Bjørnstad PM
- Blake T
- Blanc F
- Blouw J
- Blusk S
- Bocci V
- Bondar A
- Bondar N
- Bonivento W
- Borghi S
- Borgia A
- Borsato M
- Bowcock TJ
- Bowen E
- Bozzi C
- Brambach T
- Bressieux J
- Brett D
- Britsch M
- Britton T
- Brodzicka J
- Brook NH
- Brown H
- Bursche A
- Busetto G
- Buytaert J
- Cadeddu S
- Calabrese R
- Calvi M
- Calvo Gomez M
- Camboni A
- Campana P
- Campora Perez D
- Carbone A
- Carboni G
- Cardinale R
- Cardini A
- Carranza-Mejia H
- Carson L
- Carvalho Akiba K
- Casse G
- Cassina L
- Castillo Garcia L
- Cattaneo M
- Cauet CH
- Cenci R
- Charles M
- Charpentier P
- Chen S
- Cheung SF
- Chiapolini N
- Chrzaszcz M
- Ciba K
- Cid Vidal X
- Ciezarek G
- Clarke PE
- Clemencic M
- Cliff HV
- Closier J
- Coco V
- Cogan J
- Cogneras E
- Collins P
- Comerma-Montells A
- Contu A
- Cook A
- Coombes M
- Coquereau S
- Corti G
- Corvo M
- Counts I
- Couturier B
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- Craik DC
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- D'Ambrosio C
- Dalseno J
- David P
- David PN
- Davis A
- De Bruyn K
- De Capua S
- De Cian M
- De Miranda JM
- De Paula L
- De Silva W
- De Simone P
- de Vries JA
- Decamp D
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- Dettori F
- Di Canto A
- Dijkstra H
- Donleavy S
- Dordei F
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- Dos Reis AC
- Dosil Suárez A
- Dossett D
- Dovbnya A
- Dreimanis K
- Dujany G
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- Durante P
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- Dziurda A
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- Easo S
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- Egorychev V
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- Kanso W
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- Leverington B
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- Ukleja A
- Ustyuzhanin A
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- Vagnoni V
- Valenti G
- Vallier A
- van Beuzekom M
- van den Brand J
- van Herwijnen E
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- van Tilburg J
- Vazquez Gomez R
- Vazquez Regueiro P
- Vecchi S
- Velthuis JJ
- Veltri M
- Veneziano G
- Vesterinen M
- Viaud B
- Vieira D
- Vieites Diaz M
- Vilasis-Cardona X
- Vollhardt A
- Volyanskyy D
- Voong D
- Vorobyev A
- Vorobyev V
- Voss H
- Voß C
- Vázquez Sierra C
- Waldi R
- Wallace C
- Wallace R
- Walsh J
- Wandernoth S
- Wang J
- Ward DR
- Watson NK
- Websdale D
- Whitehead M
- Wicht J
- Wiedner D
- Wilkinson G
- Williams M
- Williams MP
- Wilson FF
- Wimberley J
- Wishahi J
- Wislicki W
- Witek M
- Wormser G
- Wotton SA
- Wright S
- Wu S
- Wyllie K
- Xie Y
- Xing Z
- Xu Z
- Yang Z
- Yuan X
- Yushchenko O
- Zangoli M
- Zavertyaev M
- Zhang L
- Zhang WC
- Zhang Y
- Zhelezov A
- Zhokhov A
- Zhong L
- Zvyagin A
- Publication venue
- 'American Physical Society (APS)'
- Publication date
- 01/01/2014
- Field of study
The difference in the angular distributions between beauty quarks and antiquarks, referred to as the charge asymmetry, is measured for the first time in b (b) over bar pair production at a hadron collider. The data used correspond to an integrated luminosity of 1.0 fb(-1) collected at 7 TeV center-of-mass energy in proton-proton collisions with the LHCb detector. The measurement is performed in three regions of the invariant mass of the b (b) over bar system. The results obtained are A(C)(b (b) over bar) (40 10(5) GeV/c(2)) = 1.6 +/- 1.7 +/- 0.6%,where A(C)(b (b) over bar) is defined as the asymmetry in the difference in rapidity between jets formed from the beauty quark and antiquark, where in each case the first uncertainty is statistical and the second systematic. The beauty jets are required to satisfy 2 20 GeV, and have an opening angle in the transverse plane Delta phi > 2.6 rad. These measurements are consistent with the predictions of the standard model
Observation of B(s)0→J/ψpp¯ decays and precision measurements of the B(s)0 masses
- Author
- Aaij R
- Adeva B
- Adinolfi M
- Aidala CA
- Ajaltouni Z
- Akar S
- Albero A Alfonso
- Albicocco P
- Albrecht J
- Alessio F
- Alexander M
- Alkhazov G
- Altarelli M Pepe
- Amato S
- Amhis Y
- An L
- Anderlini L
- Andreassi G
- Andreotti M
- Andrews JE
- Archilli F
- Artamonov A
- Artuso M
- Arzymatov K
- Aslanides E
- Atzeni M
- Audurier B
- Bachmann S
- Back JJ
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- Barbosa JV Viana
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- Bay A
- Bedeschi F
- Bediaga I
- Beiter A
- Bel LJ
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- Beliy N
- Bellee V
- Belloli N
- Belous K
- Belyaev I
- Ben-Haim E
- Bencivenni G
- Benito C Marin
- Benson S
- Beranek S
- Berezhnoy A
- Bernet R
- Berninghoff D
- Bertholet E
- Bertolin A
- Betancourt C
- Beteta C Abellan
- Betti F
- Bettler MO
- Bezshyiko Ia
- Bhasin S
- Bhom J
- Bieker MS
- Bifani S
- Billoir P
- Birnkraut A
- Bizzeti A
- Bjorn M
- Blago MP
- Blake T
- Blanc F
- Blusk S
- Bobulska D
- Bocci V
- Boettcher T
- Bondar A
- Bondar N
- Borghi S
- Borisyak M
- Borsato M
- Boubdir M
- Bowcock TJV
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- Brodzicka J
- Bruch D Vom
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- Bursche A
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- Buytaert J
- Byczynski W
- Cadeddu S
- Cai H
- Calabrese R
- Cali S
- Calladine R
- Calvi M
- Calvo Gomez M
- Camboni A
- Campana P
- Capriotti L
- Carbone A
- Carboni G
- Cardinale R
- Cardini A
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- Cartelle P Alvarez
- Carvalho Akiba K
- Casse G
- Cattaneo M
- Cavallero G
- Cenci R
- Chapman MG
- Charles M
- Charman R Hidalgo
- Charpentier Ph
- Chatzikonstantinidis G
- Chefdeville M
- Chekalina V
- Chen C
- Chen S
- Chitic S-G
- Chobanova V
- Chrzaszcz M
- Chubykin A
- Ciambrone P
- Cid Vidal X
- Ciezarek G
- Cindolo F
- Clarke PEL
- Clemencic M
- Cliff HV
- Closier J
- Coco V
- Coelho JAB
- Cogan J
- Cogneras E
- Cojocariu L
- Collaboration LHCb
- Collins P
- Colombo T
- Comerma-Montells A
- Contu A
- Coombs G
- Coquereau S
- Corti G
- Couturier B
- Cowan GA
- Craik DC
- Crocombe A
- Cruz Torres M
- Currie R
- D'Ambrosio C
- d'Argent P
- Da Silva CL
- Dall'Occo E
- Dalseno J
- Danilina A
- Davis A
- De Bruyn K
- De Capua S
- De Cian M
- De Miranda JM
- De Paula L
- De Serio M
- De Simone P
- de Vries A
- Dean CT
- Dean W
- Decamp D
- Declara P Fernandez
- Del Buono L
- Delaney B
- Dembinski H-P
- Demmer M
- Dendek A
- Derkach D
- Deschamps O
- Desse F
- Dettori F
- Dey B
- Di Canto A
- Di Nezza P
- Didenko S
- Dijkstra H
- Dordei F
- Dorigo M
- dos Reis AC
- Dosil Suarez A
- Douglas L
- Dovbnya A
- Dreimanis K
- Dufour L
- Dujany G
- Durante P
- Durham JM
- Dutta D
- Dzhelyadin R
- Dziewiecki M
- Dziurda A
- Dzyuba A
- Easo S
- Egede U
- Egorychev V
- Eidelman S
- Eisenhardt S
- Eitschberger U
- Ekelhof R
- Eklund L
- Ely S
- Ene A
- Escher S
- Esen S
- Evans T
- Falabella A
- Farber C
- Farley N
- Farry S
- Fazzini D
- Feo M
- Fernandez Prieto A
- Ferrari F
- Ferreira Lopes L
- Ferreira Rodrigues F
- Ferro-Luzzi M
- Filippov S
- Fini RA
- Fiorini M
- Firlej M
- Fitzpatrick C
- Fiutowski T
- Fleuret F
- Fontana M
- Fontanelli F
- Forty R
- Francisco O De Aguiar
- Frank M
- Frei C
- Fu J
- Funk W
- Gabriel E
- Gallas Torreira A
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- Gambetta S
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- Garcia Martin LM
- Garcia Plana B
- Garcia O Boente
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- Gerick D
- Gersabeck E
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- Gerstel D
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- Gironella Gironell P
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- Gligorov VV
- Gobel C
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- Gomes A
- Gomez R Vazquez
- Gonzalo A Brossa
- Gorelov IV
- Gotti C
- Govorkova E
- Grabowski JP
- Graciani Diaz R
- Granado Cardoso LA
- Grauges E
- Graverini E
- Graziani G
- Grecu A
- Greim R
- Griffith P
- Grillo L
- Gruber L
- Gruberg Cazon BR
- Gu C
- Gushchin E
- Guth A
- Guz Yu
- Gys T
- Hadavizadeh T
- Hadjivasiliou C
- Haefeli G
- Haen C
- Haines SC
- Hamilton B
- Han Q
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- Hancock TH
- Hansmann-Menzemer S
- Harnew N
- Harrison T
- Hasse C
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- He J
- Hecker M
- Heinicke K
- Heister A
- Hennessy K
- Henry L
- Hess M
- Heuel J
- Hicheur A
- Hill D
- Hilton M
- Hopchev PH
- Hu J
- Hu W
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- Huard ZC
- Hulsbergen W
- Humair T
- Hushchyn M
- Hutchcroft D
- Hynds D
- Ibis P
- Idzik M
- Ilten P
- Inglessi A
- Inyakin A
- Ivshin K
- Jacobsson R
- Jakobsen S
- Jalocha J
- Jans E
- Jashal BK
- Jawahery A
- Jiang F
- John M
- Johnson D
- Jones CR
- Joram C
- Jost B
- Jr Alves AA
- Jurik N
- Kandybei S
- Karacson M
- Kariuki JM
- Karodia S
- Kazeev N
- Kecke M
- Keizer F
- Kelsey M
- Kenzie M
- Ketel T
- Khanji B
- Kharisova
- Khurewathanakul C
- Kim KE
- Kirn T
- Kirsebom VS
- Klaver S
- Klimaszewski K
- Koliiev S
- Kolpin M
- Kopecna R
- Koppenburg P
- kostiuk I
- Kotriakhova S
- Kozeiha M
- Kravchuk L
- Kreps M
- Kress F
- Kretzschmar S
- Krokovny P
- Krupa W
- Krzemien W
- Kucewicz W
- Kucharczyk M
- Kudryavtsev V
- Kunde GJ
- Kuonen AK
- Kvaratskheliya T
- Lacarrere D
- Lafferty G
- Lai A
- Lancierini D
- Lanfranchi G
- Langenbruch C
- Latham T
- Lazzeroni C
- Le Gac R
- Lefevre R
- Leflat A
- Lemaitre F
- Lener M Poli
- Leroy O
- Lesiak T
- Leverington B
- Li H
- Li P-R
- Li X
- Li Y
- Li Z
- Liang X
- Likhomanenko T
- Lima V Franco
- Lindner R
- Lionetto F
- Lisovskyi V
- Liu G
- Liu X
- Loh D
- Loi A
- Longstaff I
- Lopes JH
- Loustau G
- Lovell GH
- Lucchesi D
- Lucio Martinez M
- Luo Y
- Lupato A
- Luppi E
- Lupton O
- Lusiani A
- Lyu X
- Machefert F
- Maciuc F
- Macko V
- Mackowiak P
- Maddrell-Mander S
- Maev O
- Maguire K
- Maisuzenko D
- Majewski MW
- Malde S
- Malecki B
- Malinin A
- Maltsev T
- Malygina H
- Manca G
- Mancinelli G
- Marangotto D
- Maratas J
- Marchand JF
- Marconi U
- Marinangeli M
- Marino P
- Marks J
- Marshall PJ
- Martellotti G
- Martinelli M
- Martinez Santos D
- Martinez Vidal F
- Massafferri A
- Materok M
- Matev R
- Mathad A
- Mathe Z
- Matiunin V
- Matteuzzi C
- Mattioli KR
- Mauri A
- Maurice E
- Maurin B
- McCann M
- McNab A
- McNulty R
- Mead JV
- Meadows B
- Meaux C
- Meinert N
- Melnychuk D
- Merk M
- Merli A
- Michielin E
- Milanes DA
- Millard E
- Minard M-N
- Minzoni L
- Mitzel DS
- Moedden A
- Mogini A
- Moise RD
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- Monroy IA
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- Muller D
- Muller J
- Muller K
- Muller V
- Murphy CH
- Murray D
- Naik P
- Nakada T
- Nandakumar R
- Nandi A
- Nanut T
- Nasteva I
- Needham M
- Neri N
- Neubert S
- Neufeld N
- Newcombe R
- Nguyen TD
- Nguyen-Mau C
- Nieswand S
- Niet R
- Nikitin N
- Nolte NS
- O'Hanlon DP
- Oblakowska-Mucha A
- Obraztsov V
- Ogilvy S
- Oldeman R
- Onderwater CJG
- Osborn JD
- Ossowska A
- Otalora Goicochea JM
- Ovsiannikova T
- Owen P
- Oyanguren A
- Pais PR
- Pajero T
- Palano A
- Palutan M
- Panshin G
- Papanestis A
- Pappagallo M
- Pappalardo LL
- Pardinas J Garcia
- Parker W
- Parkes C
- Passaleva G
- Pastore A
- Patel M
- Patrignani C
- Pearce A
- Pellegrino A
- Penso G
- Perazzini S
- Pereima D
- Perez DH Campora
- Perret P
- Pescatore L
- Petridis K
- Petrolini A
- Petrov A
- Petrucci S
- Petruzzo M
- Pietrzyk B
- Pietrzyk G
- Pikies M
- Pili M
- Pinci D
- Pinzino J
- Pisani F
- Piucci A
- Placinta V
- Playfer S
- Plews J
- Plo Casasus M
- Polci F
- Poliakova M
- Poluektov A
- Polukhina N
- Polyakov I
- Polycarpo E
- Pomery GJ
- Ponce S
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- Winn M
- Wislicki W
- Witek M
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- Wotton SA
- Wyllie K
- Xiao D
- Xie Y
- Xing H
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- Xu Q
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- Xu Z
- Yang Z
- Yang Z
- Yao Y
- Yeomans LE
- Yin H
- Yu J
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- Yushchenko O
- Zarebski KA
- Zavertyaev M
- Zhang D
- Zhang L
- Zhang WC
- Zhang Y
- Zhelezov A
- Zheng Y
- Zhu X
- Zhukov V
- Zonneveld JB
- Zucchelli S
- Publication venue
- 'American Physical Society (APS)'
- Publication date
- 01/01/2019
- Field of study
The first observation of the decays
B
0
(
s
)
→
J
/
ψ
p
¯
p
is reported, using proton-proton collision data corresponding to an integrated luminosity of
5.2
fb
−
1
, collected with the LHCb detector. These decays are suppressed due to limited available phase space, as well as due to Okubo-Zweig-Iizuka or Cabibbo suppression. The measured branching fractions are
B
(
B
0
→
J
/
ψ
p
¯
p
)
=
[
4.51
±
0.40
(
stat
)
±
0.44
(
syst
)
]
×
10
−
7
,
B
(
B
0
s
→
J
/
ψ
p
¯
p
)
=
[
3.58
±
0.19
(
stat
)
±
0.39
(
syst
)
]
×
10
−
6
. For the
B
0
s
meson, the result is much higher than the expected value of
O
(
10
−
9
)
. The small available phase space in these decays also allows for the most precise single measurement of both the
B
0
mass as
5279.74
±
0.30
(
stat
)
±
0.10
(
syst
)
MeV
and the
B
0
s
mass as
5366.85
±
0.19
(
stat
)
±
0.13
(
syst
)
MeV
Test of lepton universality in b→sℓ+ℓ− decays
- Author
- Aaij R
- Abdelmotteleb ASW
- Abellan Beteta C
- Abudinén F
- Ackernley T
- Adeva B
- Adinolfi M
- Adlarson P
- Afsharnia H
- Agapopoulou C
- Aidala CA
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- Amey JL
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- Berezhnoy A
- Bernet Andres S
- Bernet R
- Berninghoff D
- Bernstein HC
- Bertella C
- Bertolin A
- Betancourt C
- Betti F
- Bezshyiko Ia
- Bhom J
- Bian L
- Bieker MS
- Biesuz NV
- Bifani S
- Billoir P
- Biolchini A
- Birch M
- Bishop FCR
- Bitadze A
- Bizzeti A
- Blago MP
- Blake T
- Blanc F
- Blank JE
- Blusk S
- Bobulska D
- Boelhauve JA
- Boente Garcia O
- Boettcher T
- Boldyrev A
- Bolognani CS
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- Golobardes E
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- Gong G
- Gorelov IV
- Gotti C
- Grabowski JP
- Grammatico T
- Granado Cardoso LA
- Graugés E
- Graverini E
- Graziani G
- Grecu AT
- Greeven LM
- Grieser NA
- Grillo L
- Gromov S
- Gruberg Cazon BR
- Gu C
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- Guittiere M
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- Hadavizadeh T
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- Hennequin AM
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- Hicheur A
- Hill D
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- Horswill J
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- Hulsbergen W
- Hunter RJ
- Hushchyn M
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- Idzik M
- Ilin D
- Ilten P
- Inglessi A
- Iniukhin A
- Ishteev A
- Ivshin K
- Jacobsson R
- Jage H
- Jaimes Elles SJ
- Jakobsen S
- Jans E
- Jashal BK
- Jawahery A
- Jevtic V
- Jiang E
- Jiang X
- Jiang Y
- John M
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- Jones CR
- Jones TP
- Joshi S
- Jost B
- Jurik N
- Juszczak I
- Kandybei S
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- Kirsebom VS
- Kitouni O
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- Koliiev S
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- Konoplyannikov A
- Kopciewicz P
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- Kostiuk I
- Kot O
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- Kravchenko P
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- Leverington B
- LHCb Collaboration
- Li A
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- Lovell GH
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- Sarti A
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- Seuthe A
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- Shangase DM
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- Van Hulse CB
- van Veghel M
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- Vazquez Regueiro P
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- Watson NK
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- Wei Y
- Westhenry BDC
- White DJ
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- Wiederhold AR
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- Williams R
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- Wislicki W
- Witek M
- Witola L
- Wong CP
- Wormser G
- Wotton SA
- Wu H
- Wu J
- Wyllie K
- Xiang Z
- Xie Y
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- Xu L
- Xu M
- Xu Q
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- Xu Z
- Yang D
- Yang S
- Yang X
- Yang Y
- Yang Z
- Yang Z
- Yeomans LE
- Yeroshenko V
- Yeung H
- Yin H
- Yu J
- Yuan X
- Zaffaroni E
- Zavertyaev M
- Zdybal M
- Zeng M
- Zhang C
- Zhang D
- Zhang L
- Zhang S
- Zhang S
- Zhang Y
- Zhang Y
- Zhao Y
- Zharkova A
- Zhelezov A
- Zheng Y
- Zhou T
- Zhou X
- Zhou Y
- Zhovkovska V
- Zhu X
- Zhu X
- Zhu Z
- Zhukov V
- Zou Q
- Zucchelli S
- Zuliani D
- Zunica G
- Publication venue
- Publication date
- 18/12/2022
- Field of study
The first simultaneous test of muon-electron universality using
B+→K+ℓ+ℓ− and B0→K∗0ℓ+ℓ− decays is performed, in two ranges of the dilepton
invariant-mass squared, q2. The analysis uses beauty mesons produced in
proton-proton collisions collected with the LHCb detector between 2011 and
2018, corresponding to an integrated luminosity of 9 fb−1. Each
of the four lepton universality measurements reported is either the first in
the given q2 interval or supersedes previous LHCb measurements. The
results are compatible with the predictions of the Standard Model.Comment: All figures and tables, along with any supplementary material and
additional information, are available at
https://cern.ch/lhcbproject/Publications/p/LHCb-PAPER-2022-046.html (LHCb
public pages
Precision measurement of CP violation in the penguin-mediated decay Bs0→ϕϕ
- Author
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- Abdelmotteleb ASW
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- Abudinén F
- Ackernley T
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- Souza De Paula B
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- Spedicato E
- Speer JG
- Spiridenkov E
- Spradlin P
- Sriskaran V
- Stagni F
- Stahl M
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- Stenyakin O
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- Swientek K
- Szabelski A
- Szumlak T
- Szymanski M
- T'Jampens S
- Tan Y
- Taneja S
- Tat MD
- Terentev A
- Teubert F
- Thomas E
- Thompson DJD
- Tilquin H
- Tisserand V
- Tobin M
- Tomassetti L
- Tonani G
- Tong X
- Torres Machado D
- Toscano L
- Tou DY
- Trippl C
- Tuci G
- Tuning N
- Ukleja A
- Unverzagt DJ
- Usachov A
- Ustyuzhanin A
- Uwer U
- Vagnoni V
- Valassi A
- Valenti G
- Valls Canudas N
- Van Dijk M
- Van Hecke H
- van Herwijnen E
- Van Hulse CB
- van Veghel M
- Vazquez Gomez R
- Vazquez Regueiro P
- Vecchi S
- Velthuis JJ
- Veltri M
- Venkateswaran A
- Vesterinen M
- Vieira D
- Vieites Diaz M
- Vilasis-Cardona X
- Vilella Figueras E
- Villa A
- Vincent P
- Volle FC
- Vom Bruch D
- Vorobyev V
- Voropaev N
- Vos K
- Vrahas C
- Vázquez Sierra C
- Walsh J
- Walton EJ
- Wan G
- Wang C
- Wang G
- Wang J
- Wang J
- Wang J
- Wang J
- Wang M
- Wang R
- Wang X
- Wang Y
- Wang Z
- Wang Z
- Wang Z
- Ward JA
- Watson NK
- Websdale D
- Wei Y
- Westhenry BDC
- White DJ
- Whitehead M
- Wiederhold AR
- Wiedner D
- Wilkinson G
- Wilkinson MK
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- Wislicki W
- Witek M
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- Wormser G
- Wotton SA
- Wu H
- Wu J
- Wu Y
- Wyllie K
- Xiang Z
- Xie Y
- Xu A
- Xu J
- Xu L
- Xu L
- Xu M
- Xu Q
- Xu Z
- Xu Z
- Xu Z
- Yang D
- Yang S
- Yang X
- Yang Y
- Yang Z
- Yang Z
- Yeroshenko V
- Yeung H
- Yin H
- Yu J
- Yuan X
- Zaffaroni E
- Zavertyaev M
- Zdybal M
- Zeng M
- Zhang C
- Zhang D
- Zhang JZ
- Zhang L
- Zhang S
- Zhang S
- Zhang Y
- Zhang Y
- Zhao Y
- Zharkova A
- Zhelezov A
- Zheng Y
- Zhou T
- Zhou X
- Zhou Y
- Zhovkovska V
- Zhu X
- Zhu X
- Zhu Z
- Zhukov V
- Zhuo J
- Zou Q
- Zucchelli S
- Zuliani D
- Zunica G
- Publication venue
- Publication date
- 01/01/2023
- Field of study
A flavor-tagged time-dependent angular analysis of the decay
Bs0→ϕϕ is performed using pp collision data collected
by the LHCb experiment at % at s=13 TeV, the center-of-mass energy of
13 TeV, corresponding to an integrated luminosity of 6 fb^{-1}. The
CP-violating phase and direct CP-violation parameter are measured
to be ϕssˉs=−0.042±0.075±0.009 rad and
∣λ∣=1.004±0.030±0.009, respectively, assuming the same values
for all polarization states of the ϕϕ system. In these results, the
first uncertainties are statistical and the second systematic. These parameters
are also determined separately for each polarization state, showing no evidence
for polarization dependence. The results are combined with previous LHCb
measurements using pp collisions at center-of-mass energies of 7 and 8 TeV,
yielding ϕssˉs=−0.074±0.069 rad and ∣lambda∣=1.009±0.030. This is the most precise study of time-dependent CP violation
in a penguin-dominated B meson decay. The results are consistent with
CP symmetry and with the Standard Model predictions.Comment: All figures and tables, along with any supplementary material and
additional information, are available at
https://cern.ch/lhcbproject/Publications/p/LHCb-PAPER-2023-001.html (LHCb
public pages
Observation of Two New Excited Ξb0 States Decaying to Λb0 K-π+
- Author
- Aaij R
- Abdelmotteleb ASW
- Abrantes FG
- Ackernley T
- Adeva B
- Adinolfi M
- Afsharnia H
- Agapopoulou C
- Aidala CA
- Aiola S
- Ajaltouni Z
- Akar S
- Akiba KC
- Albero AA
- Albrecht J
- Alepuz CR
- Alessio F
- Alexander M
- Aliouche Z
- Alkhazov G
- Altarelli MP
- Amato S
- Amey JL
- Amhis Y
- An L
- Anderlini L
- Andreianov A
- Andreotti M
- Archilli F
- Artamonov A
- Artuso M
- Arzymatov K
- Aslanides E
- Atzeni M
- Audurier B
- Bachmann S
- Bachmayer M
- Back JJ
- Balagura V
- Baldini W
- Barajas CAC
- Barbetti M
- Barlow RJ
- Barsuk S
- Barter W
- Bartolini M
- Baryshnikov F
- Basels JM
- Bashir S
- Bassi G
- Batsukh B
- Battig A
- Bay A
- Beck A
- Becker M
- Bedeschi F
- Bediaga I
- Beiter A
- Belavin V
- Belin S
- Bellee V
- Belous K
- Belov I
- Belyaev I
- Ben-Haim E
- Bencivenni G
- Benito CM
- Berezhnoy A
- Bernet R
- Berninghoff D
- Bernstein HC
- Bertella C
- Bertolin A
- Betancourt C
- Beteta CA
- Betti F
- Bezshyiko I
- Bhasin S
- Bhom J
- Bian L
- Bieker MS
- Bifani S
- Billoir P
- Birch M
- Bishop FCR
- Bitadze A
- Bizzeti A
- Bjorn M
- Blago MP
- Blake T
- Blanc F
- Blusk S
- Bobulska D
- Boelhauve JA
- Boettcher T
- Boldyrev A
- Bondar A
- Bondar N
- Borghi S
- Borisyak M
- Borsato M
- Borsuk JT
- Bouchiba SA
- Bowcock TJV
- Boyer A
- Bozzi C
- Bradley MJ
- Braun S
- Brodski M
- Brodzicka J
- Brundu D
- Buonaura A
- Buonincontri L
- Burke AT
- Burr C
- Bursche A
- Butkevich A
- Butter JS
- Buytaert J
- Byczynski W
- Cadeddu S
- Cai H
- Calabrese R
- Calefice L
- Cali S
- Calladine R
- Calvi M
- Campana P
- Canudas NV
- Capelli S
- Capriotti L
- Carbone A
- Carboni G
- Cardinale R
- Cardini A
- Cardoso LAG
- Carli I
- Carniti P
- Cartelle PA
- Carus L
- Casasus MP
- Casse G
- Castro AP
- Castro JL
- Cattaneo M
- Cavallero G
- Cazon BRG
- Celani S
- Cerasoli J
- Cervenkov D
- Chadwick AJ
- Chapman MG
- Charles M
- Charpentier P
- Chatzikonstantinidis G
- Chefdeville M
- Chen C
- Chen S
- Chernov A
- Chobanova V
- Cholak S
- Chrzaszcz M
- Chubykin A
- Chulikov V
- Ciambrone P
- Cicala MF
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- Clarke PEL
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- Cliff HV
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- Wislicki W
- Witek M
- Witola L
- Wormser G
- Wotton SA
- Wu H
- Wyllie K
- Xiang Z
- Xiao D
- Xie Y
- Xu A
- Xu J
- Xu L
- Xu M
- Xu Q
- Xu Z
- Xu Z
- Yang D
- Yang S
- Yang Y
- Yang Z
- Yang Z
- Yao Y
- Yeomans LE
- Yin H
- Yu J
- Yuan X
- Yushchenko O
- Zaffaroni E
- Zavertyaev M
- Zdybal M
- Zenaiev O
- Zeng M
- Zhang D
- Zhang L
- Zhang S
- Zhang S
- Zhang Y
- Zhang Y
- Zharkova A
- Zhelezov A
- Zheng Y
- Zhou T
- Zhou X
- Zhou Y
- Zhovkovska V
- Zhu X
- Zhu X
- Zhu Z
- Zhukov V
- Zonneveld JB
- Zou Q
- Zucchelli S
- Zuliani D
- Zunica G
- Publication venue
- 'American Physical Society (APS)'
- Publication date
- 01/01/2022
- Field of study
Two narrow resonant states are observed in the Λb0K-π+ mass spectrum using a data sample of proton-proton collisions at a center-of-mass energy of 13 TeV, collected by the LHCb experiment and corresponding to an integrated luminosity of 6 fb-1. The minimal quark content of the Λb0K-π+ system indicates that these are excited Ξb0 baryons. The masses of the Ξb(6327)0 and Ξb(6333)0 states are m[Ξb(6327)0]=6327.28-0.21+0.23±0.12±0.24 and m[Ξb(6333)0]=6332.69-0.18+0.17±0.03±0.22 MeV, respectively, with a mass splitting of Δm=5.41-0.27+0.26±0.12 MeV, where the uncertainties are statistical, systematic, and due to the Λb0 mass measurement. The measured natural widths of these states are consistent with zero, with upper limits of Γ[Ξb(6327)0]<2.20(2.56) and Γ[Ξb(6333)0]<1.60(1.92) MeV at a 90% (95%) credibility level. The significance of the two-peak hypothesis is larger than nine (five) Gaussian standard deviations compared to the no-peak (one-peak) hypothesis. The masses, widths, and resonant structure of the new states are in good agreement with the expectations for a doublet of 1D Ξb0 resonances
Observation of a resonant structure near the Ds+Ds− threshold in the B+→Ds+Ds−K+ decay
- Author
- Aaij R
- Abdelmotteleb ASW
- Abellan Beteta C
- Abudinén F
- Ackernley T
- Adeva B
- Adinolfi M
- Afsharnia H
- Agapopoulou C
- Aidala CA
- Aiola S
- Ajaltouni Z
- Akar S
- Akiba K
- Albrecht J
- Alessio F
- Alexander M
- Alfonso Albero A
- Aliouche Z
- Alvarez Cartelle P
- Amalric R
- Amato S
- Amey JL
- Amhis Y
- An L
- Anderlini L
- Andersson M
- Andreianov A
- Andreotti M
- Andreou D
- Ao D
- Archilli F
- Artamonov A
- Artuso M
- Aslanides E
- Atzeni M
- Audurier B
- Bachmann S
- Bachmayer M
- Back JJ
- Bailly-Reyre A
- Baladron Rodriguez P
- Balagura V
- Baldini W
- Baptista de Souza Leite J
- Barbetti M
- Barlow RJ
- Barsuk S
- Barter W
- Bartolini M
- Baryshnikov F
- Basels JM
- Bassi G
- Batsukh B
- Battig A
- Bay A
- Beck A
- Becker M
- Bedeschi F
- Bediaga IB
- Beiter A
- Belavin V
- Belin S
- Bellee V
- Belous K
- Belov I
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- Williams I
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- Wislicki W
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- Wyllie K
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- Yeung H
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- Zdybal M
- Zenaiev O
- Zeng M
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- Zharkova A
- Zhelezov A
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- Zhukov V
- Zou Q
- Zucchelli S
- Zuliani D
- Zunica G
- Publication venue
- Publication date
- 26/10/2022
- Field of study
An amplitude analysis of the B+→Ds+Ds−K+ decay is carried out to
study for the first time its intermediate resonant contributions, using
proton-proton collision data collected with the LHCb detector at centre-of-mass
energies of 7, 8 and 13 TeV. A near-threshold peaking structure, referred to as
X(3960), is observed in the Ds+Ds− invariant-mass spectrum with
significance greater than 12 standard deviations. The mass, width and the
quantum numbers of the structure are measured to be 3956±5±10 MeV,
43±13±8 MeV and JPC=0++, respectively, where the first
uncertainties are statistical and the second systematic. The properties of the
new structure are consistent with recent theoretical predictions for a state
composed of ccˉssˉ quarks. Evidence for an additional structure is
found around 4140 MeV in the Ds+Ds− invariant mass, which might be
caused either by a new resonance with the 0++ assignment or by a J/ψϕ↔Ds+Ds− coupled-channel effect.Comment: All figures and tables, along with any supplementary material and
additional information, are available at
https://cern.ch/lhcbproject/Publications/p/LHCb-PAPER-2022-018.html (LHCb
public pages
Measurement of the Λb0→Λ(1520)μ+μ− differential branching fraction
- Author
- Aaij R
- Abdelmotteleb ASW
- Abellan Beteta C
- Abudinén F
- Ackernley T
- Adeva B
- Adinolfi M
- Adlarson P
- Afsharnia H
- Agapopoulou C
- Aidala CA
- Ajaltouni Z
- Akar S
- Akiba K
- Albicocco P
- Albrecht J
- Alessio F
- Alexander M
- Alfonso Albero A
- Aliouche Z
- Alvarez Cartelle P
- Amalric R
- Amato S
- Amey JL
- Amhis Y
- An L
- Anderlini L
- Andersson M
- Andreianov A
- Andreotti M
- Andreou D
- Ao D
- Archilli F
- Artamonov A
- Artuso M
- Aslanides E
- Atzeni M
- Audurier B
- Bachiller Perea I
- Bachmann S
- Bachmayer M
- Back JJ
- Bailly-Reyre A
- Baladron Rodriguez P
- Balagura V
- Baldini W
- Baptista de Souza Leite J
- Barbetti M
- Barlow RJ
- Barsuk S
- Barter W
- Bartolini M
- Baryshnikov F
- Basels JM
- Bassi G
- Batsukh B
- Battig A
- Bay A
- Beck A
- Becker M
- Bedeschi F
- Bediaga IB
- Beiter A
- Belin S
- Bellee V
- Belous K
- Belov I
- Belyaev I
- Ben-Haim E
- Benane G
- Bencivenni G
- Berezhnoy A
- Bernet Andres S
- Bernet R
- Berninghoff D
- Bernstein HC
- Bertella C
- Bertolin A
- Betancourt C
- Betti F
- Bezshyiko Ia
- Bhom J
- Bian L
- Bieker MS
- Biesuz NV
- Billoir P
- Biolchini A
- Birch M
- Bishop FCR
- Bitadze A
- Bizzeti A
- Blago MP
- Blake T
- Blanc F
- Blank JE
- Blusk S
- Bobulska D
- Bocharnikov V
- Boelhauve JA
- Boente Garcia O
- Boettcher T
- Boldyrev A
- Bolognani CS
- Bolzonella R
- Bondar N
- Borgato F
- Borghi S
- Borsato M
- Borsuk JT
- Bouchiba SA
- Bowcock TJV
- Boyer A
- Bozzi C
- Bradley MJ
- Braun S
- Brea Rodriguez A
- Breer N
- Brodzicka J
- Brossa Gonzalo A
- Brown J
- Brundu D
- Buonaura A
- Buonincontri L
- Burke AT
- Burr C
- Bursche A
- Butkevich A
- Butter JS
- Buytaert J
- Byczynski W
- Cadeddu S
- Cai H
- Calabrese R
- Calefice L
- Cali S
- Calvi M
- Calvo Gomez M
- Campana P
- Campora Perez DH
- Campoverde Quezada AF
- Capelli S
- Capriotti L
- Carbone A
- Cardinale R
- Cardini A
- Carniti P
- Carus L
- Casais Vidal A
- Caspary R
- Casse G
- Cattaneo M
- Cavallero G
- Cavallini V
- Celani S
- Cerasoli J
- Cervenkov D
- Chadwick AJ
- Chahrour I
- Chapman MG
- Charles M
- Charpentier Ph
- Chavez Barajas CA
- Chefdeville M
- Chen C
- Chen S
- Chernov A
- Chernyshenko S
- Chobanova V
- Cholak S
- Chrzaszcz M
- Chubykin A
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- Publication venue
- Publication date
- 01/01/2023
- Field of study
The branching fraction of the rare decay Λb0→Λ(1520)μ+μ− is measured for the first time, in the squared dimuon mass
intervals, q2, excluding the J/ψ and ψ(2S) regions. The data
sample analyzed was collected by the LHCb experiment at center-of-mass energies
of 7, 8, and 13 TeV, corresponding to a total integrated luminosity of $9\
\mathrm{fb}^{-1}.Theresultinthehighestq^{2}interval,q^{2} >15.0\
\mathrm{GeV}^2/c^4$, where theoretical predictions have the smallest model
dependence, agrees with the predictions.Comment: All figures and tables, along with any supplementary material and
additional information, are available at
https://cern.ch/lhcbproject/Publications/p/LHCb-PAPER-2022-050.html (LHCb
public pages
Measurement of J/ψ -pair production in pp collisions at √s = 13 TeV and study of gluon transverse-momentum dependent PDFs
- Author
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- Wislicki W
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- Wyllie K
- Xian S
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- Xu Z
- Xu Z
- Yang D
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- Yang Y
- Yang Z
- Yang Z
- Yeroshenko V
- Yeung H
- Yin H
- Yu CY
- Yu J
- Yuan X
- Zaffaroni E
- Zavertyaev M
- Zdybal M
- Zeng M
- Zhang C
- Zhang D
- Zhang J
- Zhang L
- Zhang S
- Zhang S
- Zhang Y
- Zhang Y
- Zhang YZ
- Zhao Y
- Zharkova A
- Zhelezov A
- Zheng XZ
- Zheng Y
- Zhou T
- Zhou X
- Zhou Y
- Zhovkovska V
- Zhu LZ
- Zhu X
- Zhu X
- Zhu Z
- Zhukov V
- Zhuo J
- Zou Q
- Zuliani D
- Zunica G
- Publication venue
- Springer
- Publication date
- 01/01/2024
- Field of study
The production cross-section of J/ψ pairs in proton-proton collisions at a centre-of-mass energy of √s = 13 TeV is measured using a data sample corresponding to an integrated luminosity of 4.2 fb−1 collected by the LHCb experiment. The measurement is performed with both J/ψ mesons in the transverse momentum range 0 < pT< 14 GeV/c and rapidity range 2.0 < y < 4.5. The cross-section of this process is measured to be 16.36 ± 0.28 (stat) ± 0.88 (syst) nb. The contributions from single-parton scattering and double-parton scattering are separated based on the dependence of the cross-section on the absolute rapidity difference ∆y between the two J/ψ mesons. The effective cross-section of double-parton scattering is measured to be σeff = 13.1 ± 1.8 (stat) ± 2.3 (syst) mb. The distribution of the azimuthal angle ϕCS of one of the J/ψ mesons in the Collins-Soper frame and the pT-spectrum of the J/ψ pairs are also measured for the study of the gluon transverse-momentum dependent distributions inside protons. The extracted values of ⟨cos 2ϕCS⟩ and ⟨cos 4ϕCS⟩ are consistent with zero, but the presence of azimuthal asymmetry at a few percent level is allowed
Improved measurement of CP violation parameters in Bs0→J/ψK+K− decays in the vicinity of the ϕ(1020) resonance
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- Abdelmotteleb ASW
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- Giugliano C
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- Gkougkousis EL
- Glaser FC
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- Golubkov D
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- Gooding JA
- Gorelov IV
- Gotti C
- Grabowski JP
- Granado Cardoso LA
- Graugés E
- Graverini E
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- Wyllie K
- Xian S
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- Xu Z
- Xu Z
- Xu Z
- Yang D
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- Yang Z
- Yang Z
- Yeroshenko V
- Yeung H
- Yin H
- Yu CY
- Yu J
- Yuan X
- Zaffaroni E
- Zavertyaev M
- Zdybal M
- Zeng M
- Zhang C
- Zhang D
- Zhang J
- Zhang L
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- Zhang S
- Zhang Y
- Zhang Y
- Zhao Y
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- Zhelezov A
- Zheng Y
- Zhou T
- Zhou X
- Zhou Y
- Zhovkovska V
- Zhu LZ
- Zhu X
- Zhu X
- Zhu Z
- Zhukov V
- Zhuo J
- Zou Q
- Zucchelli S
- Zuliani D
- Zunica G
- Publication venue
- American Physical Society
- Publication date
- 01/02/2024
- Field of study
The decay-time-dependent
C
P
asymmetry in
B
0
s
→
J
/
ψ
(
→
μ
+
μ
−
)
K
+
K
−
decays is measured using proton-proton collision data, corresponding to an integrated luminosity of
6
fb
−
1
, collected with the LHCb detector at a center-of-mass energy of 13 TeV. Using a sample of approximately 349 000
B
0
s
signal decays with an invariant
K
+
K
−
mass in the vicinity of the
ϕ
(
1020
)
resonance, the
C
P
-violating phase
ϕ
s
is measured, along with the difference in decay widths of the light and heavy mass eigenstates of the
B
0
s
−
¯
B
0
s
system,
Δ
Γ
s
, and the difference of the average
B
0
s
and
B
0
meson decay widths,
Γ
s
−
Γ
d
. The values obtained are
ϕ
s
=
−
0.039
±
0.022
±
0.006
rad
,
Δ
Γ
s
=
0.0845
±
0.0044
±
0.0024
ps
−
1
, and
Γ
s
−
Γ
d
=
−
0.005
6
+
0.0013
−
0.0015
±
0.0014
ps
−
1
, where the first uncertainty is statistical and the second systematic. These are the most precise single measurements to date and are consistent with expectations based on the Standard Model and with the previous LHCb analyses of this decay. These results are combined with previous independent LHCb measurements. The phase
ϕ
s
is also measured independently for each polarization state of the
K
+
K
−
system and shows no evidence for polarization dependence
- …