55 research outputs found
Measurement of ϒ production in pp collisions at √s = 2.76 TeV
- Author
- Aaij R.
- Adeva B.
- Adinolfi M.
- Affolder A.
- Aix-Marseille Univ. CNRS, MADIREL (UMR 7246)
- Ajaltouni Z.
- Albor V. Fernandez
- Albrecht J.
- Alessio F.
- Alexander M.
- Ali S.
- Alkhazov G.
- Altarelli M. Pepe
- Alvarez A. Pazos
- Alves A.A.
- Amato S.
- Amerio S.
- Amhis Y.
- Anderlini L.
- Anderson J.
- Andreassen R.
- Andreotti M.
- Andrews J.E.
- Appleby R.B.
- Archilli F.
- Artamonov A.
- Artuso M.
- Aslanides E.
- Astrophysics Group Cavendish Laboratory
- Auriemma G.
- Baalouch M.
- Bachmann S.
- Back J.J.
- Badalov A.
- Balagura V.
- Baldini W.
- Barlow R.J.
- Barschel C.
- Barsuk S.
- Barter W.
- Batozskaya V.
- Bauer Th
- Bay A.
- 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 M.-O.
- Bien A.
- Bifani S.
- Bird T.
- Bizzeti A.
- Bjørnstad P.M.
- Blake T.
- Blanc F.
- Blouw J.
- Blusk S.
- Bocci V.
- Bondar A.
- Bondar N.
- Bonivento W.
- Borghi S.
- Borgia A.
- Borsato M.
- Bowcock T. J. V.
- Bowen E.
- Bozzi C.
- Brambach T.
- Bressieux J.
- Brett D.
- Britsch M.
- Britton T.
- Brook N.H.
- Brown H.
- Budker Institute of Nuclear Physics of the Siberian Branch of the RAS
- Bursche A.
- Busetto G.
- Buytaert J.
- Cadeddu S.
- Calabrese R.
- Callot O.
- Calvi M.
- Camboni A.
- Campana P.
- Canto A. Di
- Carbone A.
- Carboni G.
- Cardinale R.
- Cardini A.
- Cardoso L. A. Granado
- Carranza-Mejia H.
- Carson L.
- Cartelle P. Alvarez
- Carvalhoakiba K.
- Casasus M. Plo
- Casse G.
- Cattaneo M.
- Cauet Ch
- Cenci R.
- Centre National de la Recherche Scientifique
- Centro Brasileiro de Pesquisas Físicas (CBPF)
- Charles M.
- Charpentier Ph
- Cheung S.-F.
- Chiapolini N.
- Chrzaszcz M.
- Ciba K.
- Cidvidal X.
- Ciezarek G.
- Cittadella Universitaria
- Clarendon Laboratory
- Clarke P. E. L.
- Clemencic M.
- Cliff H.V.
- Closier J.
- CNRS/IN2P3
- Coca C.
- Coco V.
- Cogan J.
- Cogneras E.
- collaboration The LHCb
- Collins P.
- Comerma-Montells A.
- Contu A.
- Cook A.
- Coombes M.
- Coquereau S.
- Corti G.
- Counts I.
- Coutinho R. Silva
- Couturier B.
- Cowan G.A.
- Craik D.C.
- Cunliffe S.
- Currie R.
- Dalseno J.
- David P.
- David P. N. Y.
- Davis A.
- De Bonis Bonis I.
- De Bruyn Bruyn K.
- De Capua Capua S.
- De Cian Cian M.
- De Miranda Miranda J.M.
- De Paula B. Souza
- De Paula Paula L.
- De Silva Silva W.
- De Simone Simone P.
- De Vries Vries J.A.
- Decamp D.
- Deckenhoff M.
- Del Buono Buono L.
- Derkach D.
- Deschamps O.
- Dettori F.
- Diaz R. Graciani
- Dijkstra H.
- Dipartimento di Fisica dell'Università
- Donleavy S.
- Dordei F.
- Dorigo M.
- Dorosz P.
- Dos Reis Reis A.C.
- Dossett D.
- Dovbnya A.
- Dupertuis F.
- Durante P.
- Dzhelyadin R.
- Dziurda A.
- Dzyuba A.
- Déléage N.
- D’Ambrosio C.
- Easo S.
- Egede U.
- Egorychev V.
- Eidelman S.
- Eisenhardt S.
- Eitschberger U.
- Ekelhof R.
- Eklund L.
- El Rifai Rifai I.
- Elsasser Ch
- EPFL
- Esen S.
- European Organization for Nuclear Research
- Faculty of Physics and Applied Computer Science
- Falabella A.
- Farinelli C.
- Farry S.
- Federal University of Rio de Janeiro
- Ferguson D.
- Ferro-Luzzi M.
- Filippov S.
- Fiore M.
- Fiorini M.
- Fitzpatrick C.
- Fontana M.
- Fontanelli F.
- Forty R.
- Francisco O.
- Frank M.
- Frei C.
- Frosini M.
- Fu J.
- Furfaro E.
- Färber C.
- Galli D.
- Gandelman M.
- Gandini P.
- Gao Y.
- Garcia L. Castillo
- Garcia M. Ubeda
- Garofoli J.
- Garrido L.
- Gaspar C.
- Gauld R.
- Gersabeck E.
- Gersabeck M.
- Gershon T.
- Ghez Ph
- Gianelle A.
- Giani’ S.
- Gibson V.
- Giubega L.
- Gligorov V.V.
- Goicochea J. M. Otalora
- Golubkov D.
- Golutvin A.
- Gomes A.
- Gomez M. Calvo
- Gomez R. Vazquez
- Gordon H.
- Graugés E.
- Graziani G.
- Grecu A.
- Greening E.
- Gregson S.
- Griffith P.
- Grillo L.
- Grünberg O.
- Gui B.
- Guimaraes V. Salustino
- Gushchin E.
- Gutierrez O. Aquines
- Guz Yu
- Gys T.
- Gándara M. Grabalosa
- Göbel C.
- Hadjivasiliou C.
- Haefeli G.
- Haen C.
- Hafkenscheid T.W.
- Haines S.C.
- Hall S.
- Hamilton B.
- Hampson T.
- Hansmann-Menzemer S.
- Harnew N.
- Harnew S.T.
- Harrison J.
- Hartmann T.
- He J.
- Head T.
- Heijne V.
- Hennessy K.
- Henrard P.
- Henry L.
- Henryk Niewodniczanski Institute of Nuclear Physics Polish Academy of Sciences
- Heß M.
- Hicheur A.
- High-Energy Frontier
- Hill D.
- Hoballah M.
- Hombach C.
- Horia Hulubei National Institute of Physics and Nuclear Engineering
- Hulsbergen W.
- Hunt P.
- Hussain N.
- Hutchcroft D.
- Hynds D.
- Iakovenko V.
- Idzik M.
- Ilten P.
- Imperial College
- IN2P3 Institut National de Physique Nucleaire et de Physique des Particules
- INFN - Sezione di Bologna
- Infn Sezione di Ferrara
- INFN Sezione di Firenze
- INFN Sezione di Milano-Bicocca
- INFN Sezione di Padova
- INFN-Sezione di Bari
- INFN-Sezione di Pisa
- INS CNRS
- Institute for High Energy Physics (IHEP)
- Institute for Nuclear Research of the National Academy of Sciences (KINR)
- Institute for Nuclear Research of the Russian Academy of Sciences (INR RAN)
- Institute of Theoretical and Experimental Physics (ITEP)
- Jacobsson R.
- Jaeger A.
- Jans E.
- Jaton P.
- Jawahery A.
- Jing F.
- John M.
- Johnson D.
- Jones C.R.
- Joram C.
- Jost B.
- Jurik N.
- Kaballo M.
- Kandybei S.
- Kanso W.
- Karacson M.
- Karbach T.M.
- Kelsey M.
- Kenyon I.R.
- Ketel T.
- Khanji B.
- Khurewathanakul C.
- Klaver S.
- Kochebina O.
- Komarov I.
- Koopman R.F.
- Koppenburg P.
- Korolev M.
- Kozlinskiy A.
- Kravchuk L.
- Kreplin K.
- Kreps M.
- Krocker G.
- Krokovny P.
- Kruse F.
- Kucharczyk M.
- Kudryavtsev V.
- Kurek K.
- Kvaratskheliya T.
- La Thi Thi V.N.
- Laboratoire d'Annecy de Physique des Particules (LAPP) Univ. Grenoble Alpes, Université Savoie Mont Blanc
- Laboratori Nazionali di Frascati dell'INFN
- Lacarrere D.
- Lafferty G.
- Lai A.
- Lambert D.
- Lambert R.W.
- Lanciotti E.
- Lanfranchi G.
- Langenbruch C.
- Latham T.
- Lazzeroni C.
- Le Gac Gac R.
- Lebedev Physical Institute and NRNU MEPhl
- Lees J.-P.
- Leflat A.
- Lefrançois J.
- Lefèvre R.
- Leo S.
- Leroy O.
- Lesiak T.
- Leverington B.
- Li Y.
- Liles M.
- Lindner R.
- Linn C.
- Lionetto F.
- Liu B.
- Liu G.
- Lohn S.
- Longstaff I.
- Lopes J.H.
- Lopez-March N.
- Lowdon P.
- Lu H.
- Lucchesi D.
- Luisier J.
- Luo H.
- Luppi E.
- Lupton O.
- Machefert F.
- Machikhiliyan I.V.
- Maciuc F.
- Maev O.
- Malde S.
- Manca G.
- Mancinelli G.
- Manisa Celal Bayar University
- Manzali M.
- Maratas J.
- Marconi U.
- Marino P.
- Marks J.
- Martellotti G.
- Martens A.
- Martinelli M.
- Massachusetts Institute of Technology
- Massafferri A.
- Matev R.
- Mathe Z.
- Matteuzzi C.
- Max-Planck-Institut für Kernphysik (MPIK)
- Mazurov A.
- Mccann M.
- Mccarthy J.
- Mcnab A.
- Mcnulty R.
- Mcskelly B.
- Meadows B.
- Meier F.
- Meissner M.
- Merk M.
- Milanes D.A.
- Minard M.-N.
- Molina V. Rives
- Monteil S.
- Moran D.
- Morandin M.
- Morata J. A. Hernando
- Morawski P.
- Mordà A.
- Morello M.J.
- Moscow State University
- Mountain R.
- Muheim F.
- Muresan R.
- Muryn B.
- Muster B.
- Märki R.
- Müller K.
- Naik P.
- Nakada T.
- Nandakumar R.
- Nasteva I.
- National Centre for Nuclear Research (NCBJ)
- National Research Centre Kurchatov Institute
- Navarro A. Puig
- Needham M.
- Neri N.
- Neubert S.
- Neufeld N.
- Nguyen A.D.
- Nguyen T.D.
- Nguyen-Mau C.
- Nicol M.
- Niess V.
- Niet R.
- Nikhef
- Nikitin N.
- Nikodem T.
- Novoselov A.
- Novosibirsk State University
- NSC Kharkiv Institute of Physics and Technology (NSC KIPT)
- Oblakowska-Mucha A.
- Obraztsov V.
- Oggero S.
- Ogilvy S.
- Okhrimenko O.
- Oldeman R.
- Olloqui E. Picatoste
- Onderwater G.
- Orlandea M.
- Owen P.
- Oyanguren A.
- Pal B.K.
- Palano A.
- Palombo F.
- Palutan M.
- Panman J.
- Papanestis A.
- Pappagallo M.
- Pappalardo L.
- Paris Diderot University - Paris VII
- Parkes C.
- Parkinson C.J.
- Passaleva G.
- Patel G.D.
- Patel M.
- Patrignani C.
- Pavel-Nicorescu C.
- Pearce A.
- Pellegrino A.
- Penso G.
- Perazzini S.
- Perez D. Campora
- Perez P. Rodriguez
- Perret P.
- Perrin-Terrin M.
- Pescatore L.
- Pesen E.
- Pessina G.
- Petersburg Nuclear Physics Institute (PNPI)
- Petridis K.
- Petrolini A.
- Pietrzyk B.
- Pilař T.
- Pinci D.
- Pistone A.
- Playfer S.
- Polci F.
- Polok G.
- Poluektov A.
- Polycarpo E.
- Pontifícia Universidade Católica do Rio de Janeiro (PUC-Rio)
- Popov A.
- Popov D.
- Popovici B.
- Potterat C.
- Powell A.
- Precision Frontier
- Prisciandaro J.
- Pritchard A.
- Prouve C.
- Pugatch V.
- Punzi G.
- Qian W.
- Rachwal B.
- Rademacker J.H.
- Rakotomiaramanana B.
- Rama M.
- Rangel M.S.
- Raniuk I.
- Rauschmayr N.
- Raven G.
- Redford S.
- Regueiro P. Vazquez
- Reichert S.
- Reid M.M.
- Ricciardi S.
- Richards A.
- Rinnert K.
- Rios C. Santamarina
- Robbe P.
- Roberts D.A.
- Rodrigues A.B.
- Rodrigues E.
- Rodrigues F. Ferreira
- Rodriguez J. Molina
- Roiser S.
- Romanovsky V.
- Romero D. A. Roa
- Rotondo M.
- Rouvinet J.
- Ruf T.
- Ruffini F.
- Ruiz H.
- Rutherford Appleton Laboratory
- Sabatino G.
- Sagidova N.
- Sail P.
- Saitta B.
- Santacesaria R.
- Santos D. Martinez
- Santovetti E.
- Sapunov M.
- Sarti A.
- Satriano C.
- Satta A.
- Savrie M.
- Savrina D.
- Schiller M.
- Schindler H.
- Schlupp M.
- Schmelling M.
- Schmidt B.
- Schneider O.
- Schopper A.
- Schune M.-H.
- Schwemmer R.
- Sciascia B.
- Sciubba A.
- Scuola di Ingegneria Universit della Basilicata
- Scuola Normale Superiore di Pisa
- Seco M.
- Sedes B. Sanmartin
- Semennikov A.
- Senderowska K.
- Sepp I.
- Serra N.
- Serrano J.
- Seyfert P.
- Sezione di Genova
- Sezione di Napoli
- Sezione INFN di Milano Bicocca
- Sezione INFN di Roma Tor Vergata
- Shapkin M.
- Shapoval I.
- Shcheglov Y.
- Shears T.
- Shekhtman L.
- Shevchenko O.
- Shevchenko V.
- Shires A.
- Sierra C. Vázquez
- Silva J. J. Saborido
- Simi G.
- Sirendi M.
- Skidmore N.
- Skwarnicki T.
- Smith E.
- Smith E.
- Smith J.
- Smith M.
- Smith N.A.
- Snoek H.
- Sokoloff M.D.
- Soler F. J. P.
- Soomro F.
- Souza D.
- Spaan B.
- Sparkes A.
- Spinella F.
- Spradlin P.
- Stagni F.
- Stahl S.
- Steinkamp O.
- Stevenson S.
- Stoica S.
- Stone S.
- Storaci B.
- Stracka S.
- Straticiuc M.
- Straumann U.
- Stroili R.
- Subbiah V.K.
- Sun L.
- Sutcliffe W.
- Suárez A. Dosil
- Swientek S.
- Syracuse University
- Syropoulos V.
- Szczekowski M.
- Szczypka P.
- Szilard D.
- Szumlak T.
- Sánchez A. Martín
- Technische Universität Dortmund
- Teklishyn M.
- Tellarini G.
- Teodorescu E.
- Teubert F.
- Thomas C.
- Thomas E.
- Tico J. Garra
- Tisserand V.
- Tobin M.
- Tolk S.
- Tomassetti L.
- Tonelli D.
- Topp-Joergensen S.
- Torr N.
- Torreira A. Gallas
- Torres M. Cruz
- Tostes D. Martins
- Tournefier E.
- Tourneur S.
- Tran M.T.
- Tresch M.
- Trigo E. Perez
- Tsaregorodtsev A.
- Tsinghua University
- Tsopelas P.
- Tuning N.
- T’Jampens S.
- Ukleja A.
- Univ Cincinnati University of Cincinnati
- Univ Glasgow University of Glasgow
- Universidad de Santiago de Compostela
- Universidade Federal Do Tri?ngulo Mineiro UFTM
- Universitat de Barcelona
- Universitat de Valencia-CSIC
- Universitat Ramon Llull
- University College Dublin
- University of Birmingham
- University of Bristol
- University of Cambridge
- University of Edinburgh
- University of Florence
- University of Groningen
- University of Groningen
- University of Heidelberg
- University of Liverpool
- University of Manchester
- University of Maryland
- University of Pisa
- University Of Warwick
- Università degli Studi di Milano
- Università di Bari
- Università di Bologna
- Università di Cagliari
- Università di Ferrara
- Università di Milano Bicocca
- Università di Modena e Reggio Emilia
- Università di Padova
- Università di Roma La Sapienza
- Università di Urbino
- Universität Rostock
- Universität Zürich
- Université Clermont-Auvergne et CNRS
- Université Paris-Saclay
- Ustyuzhanin A.
- Uwer U.
- Vagnoni V.
- Valenti G.
- Vallier A.
- Valls P. Ruiz
- Van Beuzekom Beuzekom M.
- Van Den Brand Den Brand J.
- Van Herwijnen Herwijnen E.
- Van Leerdam Leerdam J.
- Van Tilburg Tilburg J.
- Vecchi S.
- Velthuis J.J.
- Veltri M.
- Veneziano G.
- Vesterinen M.
- Viaud B.
- Vidal A. Romero
- Vidal F. Martinez
- Vieira D.
- Vilasis-Cardona X.
- VNU-International School
- Vollhardt A.
- Volyanskyy D.
- Voong D.
- Vorobyev A.
- Vorobyev V.
- Voss H.
- Voß C.
- Vrije Universiteit Amsterdam de Boelelaan
- Waldi R.
- Wallace C.
- Wallace R.
- Wandernoth S.
- Wang J.
- Ward D.R.
- Watson N.K.
- Webber A.D.
- Websdale D.
- Whitehead M.
- Wicht J.
- Wiechczynski J.
- Wiedner D.
- Wiggers L.
- Wilkinson G.
- Williams M.
- Williams M.P.
- Wilson F.F.
- Wimberley J.
- Wishahi J.
- Wislicki W.
- Witek M.
- Wormser G.
- Wotton S.A.
- Wright S.
- Wu S.
- Wyllie K.
- Xie Y.
- Xing Z.
- Yang Z.
- Yuan X.
- Yushchenko O.
- Zangoli M.
- Zavertyaev M.
- Zhang F.
- Zhang L.
- Zhang W.C.
- Zhang Y.
- Zhelezov A.
- Zhokhov A.
- Zhong L.
- Zvyagin A.
- Publication venue
- 'Springer Science and Business Media LLC'
- Publication date
- 01/01/2014
- Field of study
The production of ϒ(1S), ϒ(2S) and ϒ(3S)
mesons decaying into the dimuon final state is studied with
the LHCb detector using a data sample corresponding to an
integrated luminosity of 3.3 pb−1 collected in proton–proton
collisions at a centre-of-mass energy of √s = 2.76 TeV. The
differential production cross-sections times dimuon branching
fractions are measured as functions of the ϒ transverse
momentum and rapidity, over the ranges pT < 15 GeV/c
and 2.0 < y < 4.5. The total cross-sections in this kinematic
region, assuming unpolarised production, are measured to be
σ (pp → ϒ(1S)X) × B
ϒ(1S)→μ+μ−
= 1.111 ± 0.043 ± 0.044 nb,
σ (pp → ϒ(2S)X) × B
ϒ(2S)→μ+μ−
= 0.264 ± 0.023 ± 0.011 nb,
σ (pp → ϒ(3S)X) × B
ϒ(3S)→μ+μ−
= 0.159 ± 0.020 ± 0.007 nb,
where the first uncertainty is statistical and the second systematic
Study of D-(*())(+)(sJ) mesons decaying to D*K-+(S)0 and D*K-0(+) final states
- Author
- Aaij R.
- Adeva C.
- Adinolfi B.
- Affolder M.
- Ajaltouni A.
- Akar Z.
- Akiba L.
- Albor D.
- Albrecht S.
- Alessio J.
- Alexander F.
- Ali M.
- Alkhazov S.
- Altarelli G.
- Alvarez
- Alves P.
- Amato A. A.
- Amerio S.
- Amhis S.
- An Y.
- Anderlini L.
- Andreassi L.
- Andreotti G.
- Andrews M.
- Appleby J. E.
- Aquines
- Archilli O.
- Artamonov P.
- Artuso A.
- Aslanides M.
- Auriemma E.
- Baalouch G.
- Bachmann M.
- Back S.
- Badalov J. J.
- Baesso A.
- Baldini C.
- Barlow W.
- Barschel R. J.
- Barsuk C.
- Barter S.
- Batozskaya W.
- Battista V.
- Bay V.
- Beaucourt A.
- Beddow L.
- Bedeschi J.
- Bediaga F.
- Bel I.
- Bellee L. J.
- Belloli V.
- Belyaev N.
- Ben Haim I.
- Bencivenni E.
- Benito U.
- Benson G.
- Benton S.
- Berezhnoy J.
- Bernet A.
- Bertolin R.
- Beteta Abellan
- Bettler A.
- Bifani M.
- Billoir S.
- Bird P.
- Birnkraut T.
- Bizzeti A.
- Blake A.
- Blanc T.
- Blouw F.
- Blusk J.
- Bocci S.
- Bondar A.
- Bondar V.
- Bonivento N.
- Borghi W.
- Borisyak S.
- Borsato M.
- Bowcock M.
- Bowen T. J. V.
- Bozzi E.
- Braun C.
- Britsch S.
- Britton M.
- Brodzicka T.
- Brook J.
- Buchanan N. H.
- Burr E.
- Bursche C.
- Buytaert A.
- Cadeddu J.
- Calabrese S.
- Calvi R.
- Calvo
- Campana M.
- Campora
- Capriotti D.
- Carbone L.
- Carboni A.
- Cardinale G.
- CARDINALE ROBERTA
- Cardini R.
- Cardoso R.
- Carniti A.
- Carson P.
- Cartelle G.
- Carvalho
- Casasus S.
- Casse K.
- Cassina G.
- Castillo
- Cattaneo L.
- Cauet M.
- Cavallero C.h. and
- CAVALLERO GIOVANNI
- Cenci G.
- Charles R.
- Charpentier M.
- Chefdeville P.h. and
- Chen M.
- Cheung S.
- Chiapolini S. F.
- Chrzaszcz N.
- Cid
- Cid J.
- Ciezarek X.
- Clarke G.
- Clemencic P. E. L.
- Cliff M.
- Closier H. V.
- Coco J.
- Cogan V.
- Cogneras J.
- Cogoni E.
- Cojocariu V.
- Collazuol L.
- Collins G.
- Comerma Montells P.
- Contu A.
- Cook A.
- Coombes A.
- Coquereau M.
- Corti S.
- Corvo G.
- Coutinho B. G.
- Couturier M.
- Cowan B.
- Craik G. A.
- Crocombe D. C.
- Cruz
- Cunliffe M.
- Currie S.
- Dall�cco C.
- Dalseno E.
- David J.
- Davis P. N. Y.
- De Aguiar
- De Bruyn O.
- De Capua K.
- De Cian S.
- De Miranda M.
- de Oliveira R.
- De Paula D.
- De Paula J. M.
- De Simone L.
- de Vries C.
- Dean P.
- Decamp C. T.
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- Witek W.
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- Wotton G.
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- Wyllie S.
- Xie K.
- Xu Y.
- Yang Z.
- Yu Z.
- Yuan J.
- Yushchenko X.
- Zangoli O.
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- Zhelezov Y.
- Zhokhov A.
- Zhong A.
- Zhukov L.
- Zucchelli V.
- Publication venue
- Springer Science and Business Media LLC
- Publication date
- 01/01/2016
- Field of study
A search is performed for DsJ(∗)+ mesons in the reactions pp→D∗+KS0X and pp→D∗0K+X using data collected at
centre-of-mass energies of 7 and 8 TeV with the LHCb detector. For the D∗+KS0 final state, the decays D∗+→D0π+ with D0→K−π+ and D0→K−π+π+π− are used. For D∗0K+, the
decay D∗0→D0π0 with D0→K−π+ is used. A prominent
Ds1(2536)+ signal is observed in both D∗+KS0 and D∗0K+ final states. The resonances Ds1∗(2700)+ and Ds3∗(2860)+ are
also observed, yielding information on their properties, including spin-parity
assignments. The decay Ds2∗(2573)+→D∗+KS0 is observed
for the first time, at a significance of 6.9 σ, and its branching
fraction relative to the Ds2∗(2573)+→D+KS0 decay mode is
measured
Search for Violations of Lorentz Invariance and CPT Symmetry in B-(s)(0) Mixing
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- Kenyon M.
- Kenzie I. R.
- Ketel M.
- Khairullin T.
- Khanji E.
- Khurewathanakul B.
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- Klaver T.
- Klimaszewski S.
- Kolpin K.
- Komarov M.
- Koopman I.
- Koppenburg R. F.
- Kozeiha P.
- Kravchuk M.
- Kreplin L.
- Kreps K.
- Krokovny M.
- Kruse P.
- Krzemien F.
- Kucewicz W.
- Kucharczyk W.
- Kudryavtsev M.
- Kuonen V.
- Kurek A. K.
- Kvaratskheliya K.
- Lacarrere T.
- Lafferty D.
- Lai G.
- Lambert A.
- Lanfranchi D.
- Langenbruch G.
- Langhans C.
- Latham B.
- Lazzeroni T.
- Le Gac C.
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- Lefevre J. P.
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- Lhcb Collaboration
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- Likhomanenko Y.
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- Pepe
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- PETROLINI ALESSANDRO
- Petruzzo A.
- Picatoste Olloqui M.
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- PISTONE ALESSANDRO
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- Wilkinson J.
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- Williams M.
- Williams M. P.
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- Wimberley F. F.
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- Yin Z.
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- Yushchenko X.
- Zangoli O.
- Zavertyaev M.
- Zhang L.
- Zhang M.
- Zhelezov Y.
- Zheng A.
- Zhokhov Y.
- Zhong A.
- Zhukov L.
- Zucchelli V.
- Publication venue
- American Physical Society (APS)
- Publication date
- 01/01/2016
- Field of study
Violations of CPT symmetry and Lorentz invariance are searched for by studying interference effects in B^{0} mixing and in B_{s}^{0} mixing. Samples of B^{0}→J/ψK_{S}^{0} and B_{s}^{0}→J/ψK^{+}K^{-} decays are recorded by the LHCb detector in proton-proton collisions at center-of-mass energies of 7 and 8 TeV, corresponding to an integrated luminosity of 3 fb^{-1}. No periodic variations of the particle-antiparticle mass differences are found, consistent with Lorentz invariance and CPT symmetry. Results are expressed in terms of the standard model extension parameter Δa_{μ} with precisions of O(10^{-15}) and O(10^{-14}) GeV for the B^{0} and B_{s}^{0} systems, respectively. With no assumption on Lorentz (non)invariance, the CPT-violating parameter z in the B_{s}^{0} system is measured for the first time and found to be Re(z)=-0.022±0.033±0.005 and Im(z)=0.004±0.011±0.002, where the first uncertainties are statistical and the second systematic
Observation of Lambda(0)(b) -> psi (2S)pK(-) and Lambda(0)(b) -> J/psi pi(+)pi(-)pK(-) decays and a measurement of the A(b)(0) baryon mass
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- and Seyfert L.
- and Shapkin P.
- and Shapoval M.
- and Shcheglov I.
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- and Shekhtman T.
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- and Shires V.
- and Siddi A.
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- and Tran M.
- and Tresch M. T.
- and Trisovic M.
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- and Vazquez Sierra P.
- and Vecchi C.
- and Velthuis M.
- and Veltri J. J.
- and Veneziano M.
- and Vesterinen G.
- and Viaud M.
- and Vidal M.
- and Vieira B.
- and Vieites Diaz D.
- and Vilasis-Cardona M.
- and Volkov X.
- and Vollhardt V.
- and Voong A.
- and Vorobyev A.
- and Vorobyev D.
- and Voss V.
- and Waldi A.
- and Wallace C.
- and Wallace R.
- and Walsh R.
- and Wang J.
- and Ward J.
- and Watson D. R.
- and Websdale N. K.
- and Weiden D.
- and Whitehead A.
- and Wicht M.
- and Wilkinson G.
- and Wilkinson J.
- and Williams M.
- and Williams M.
- and Williams M.
- and Williams M. P.
- and Wilson T.
- and Wimberley F. F.
- and Wishahi J.
- and Wislicki J.
- and Witek W.
- and Wormser M.
- and Wotton G.
- and Wraight S. A.
- and Wright K.
- and Wyllie S.
- and Xie K.
- and Xu Y.
- and Yang Z.
- and Yin Z.
- and Yu H.
- and Yuan J.
- and Yushchenko X.
- and Zangoli O.
- and Zavertyaev M.
- and Zhang L.
- and Zhang M.
- and Zhelezov Y.
- and Zheng A.
- and Zhokhov Y.
- and Zhong A.
- and Zhukov L.
- and Zucchelli V.
- Aquines and Archilli O.
- Campora and Capriotti D.
- Castillo and Cattaneo L.
- Cavallero Ch. and
- Chatzikonstantinidis Ph. and
- Cid and Ciezarek X.
- Ely Ch. and
- Garra and Garrido J.
- Giani Ph. and
- Grabalosa and Graciani Diaz M.
- Granado and Grauges L. A.
- Gys Yu. and
- Jr .
- Lemos and Leroy E.
- Lhcb Collaboration
- Pepe and Perazzini M.
- Puig and Punzi A.
- Rodriguez and Rogozhnikov P.
- S .
- Silva and Silva de Oliveira R.
- Vazquez and Vazquez Regueiro R.
- Publication venue
- 'Springer Science and Business Media LLC'
- Publication date
- 01/01/2016
- Field of study
The decays Lambda(0)(b) -> psi(2S)pK(-) and Lambda(0)(b) -> J/psi
pi(+)pi(-)pK(-) are observed in a data sample corresponding to an
integrated luminosity of 3 fb(-1), collected in proton-proton collisions
at 7 and 8 TeV centre-of-mass energies by the LHCb detector. The psi(2S)
mesons are reconstructed through the decay modes psi(2S) -> mu(+)mu(-)
and psi(2S) -> J/psi pi(+)pi(-) The branching fractions relative to that
of Lambda(0)(b) -> J/psi pk(-) are measured to be
[GRAPHICS]
where the first uncertainties are statistical, the second are systematic
and the third is related to the knowledge of J/psi and psi(2S) branching
fractions. The mass of the Ai baryon is measured to be
M(Lambda(0)(b)) = 5619.65 +/- 0.17 0.17 MeV/c(2),
where the uncertainties are statistical and systematic
Measurement of the B-s(0) -> D-s(()*D-)+(s)(*()-) branching fractions
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- and Zavertyaev M.
- and Zhang L.
- and Zhang M.
- and Zhelezov Y.
- and Zhokhov A.
- and Zhong A.
- and Zhukov L.
- and Zucchelli V.
- Cavallero Ch. and
- Chefdeville Ph. and
- Cid and Ciezarek X.
- Ely Ch. and
- Gallas and Galli A.
- Giani Ph. and
- Gys Yu. and
- Jr .
- Lemos and Leroy E.
- Lhcb Collaboration
- Puig and Punzi A.
- Ramos and Rangel M.
- Rives and Robbe V.
- S .
- Souza and Spaan B.
- Publication venue
- 'American Physical Society (APS)'
- Publication date
- 01/01/2016
- Field of study
The branching fraction of the decay B-s(0) -> D-s(()*D-)+(s)(*()-)
is measured using pp collision data corresponding to an integrated
luminosity of 1.0 fb(-1), collected using the LHCb detector at a
center-of-mass energy of 7 TeV. It is found to be B(B-s(0) ->
D-s(()*D-)(s)(*()-)) = (3.05 +/- 0.10 +/- 0.20 +/- 0.34) where
the uncertainties are statistical, systematic, and due to the
normalization channel, respectively. The branching fractions of the
individual decays corresponding to the presence of one or two
D-s(*+/-) are also measured. The individual branching fractions are
found to be B(B-s(0) -> D-s*D-+/-(s)-/+) = (1.35 +/- 0.06 +/- 0.09 +/-
0.15) B(B-s(0) -> D-s*D-+(s)*(-)) = (1.27 +/- 0.08 +/- 0.10 +/-
0.14)%. All three results are the most precise determinations to date
A new algorithm for identifying the flavour of B-s(0) mesons at LHCb
- Author
- Aaij R. and Beteta
- Abellan and Adeva C.
- Alvarez and Alves P.
- and Adinolfi B.
- and Affolder M.
- and Ajaltouni A.
- and Akar Z.
- and Akiba L.
- and Albrecht S.
- and Alessio J.
- and Alexander F.
- and Ali M.
- and Alkhazov S.
- and Altarelli G.
- and Amato A. A.
- and Amerio S.
- and Amhis S.
- and An Y.
- and Anderlini L.
- and Andreassi L.
- and Andreotti G.
- and Andrews M.
- and Appleby J. E.
- and Artamonov P.
- and Artuso A.
- and Aslanides M.
- and Auriemma E.
- and Baalouch G.
- and Bachmann M.
- and Back S.
- and Badalov J. J.
- and Baesso A.
- and Baldini C.
- and Barlow W.
- and Barschel R. J.
- and Barsuk C.
- and Barter S.
- and Batozskaya W.
- and Battista V.
- and Bay V.
- and Beaucourt A.
- and Beddow L.
- and Bedeschi J.
- and Bediaga F.
- and Bel I.
- and Bellee L. J.
- and Belloli V.
- and Belyaev N.
- and Ben-Haim I.
- and Bencivenni E.
- and Benson G.
- and Benton S.
- and Berezhnoy J.
- and Bernet A.
- and Bertolin R.
- and Betti A.
- and Bettler F.
- and Bifani M.
- and Billoir S.
- and Bird P.
- and Birnkraut T.
- and Bizzeti A.
- and Blake A.
- and Blanc T.
- and Blouw F.
- and Blusk J.
- and Bocci S.
- and Bondar A.
- and Bondar V.
- and Bonivento N.
- and Borgheresi W.
- and Borghi A.
- and Borisyak S.
- and Borsato M.
- and Bowcock M.
- and Bowen T. J. V.
- and Bozzi E.
- and Braun C.
- and Britsch S.
- and Britton M.
- and Brodzicka T.
- and Brook J.
- and Buchanan N. H.
- and Burr E.
- and Bursche C.
- and Buytaert A.
- and Cadeddu J.
- and Calabrese S.
- and Calvi R.
- and Calvo Gomez M.
- and Campana M.
- and Carbone L.
- and Carboni A.
- and Cardinale G.
- and Cardini R.
- and Cardoso R.
- and Carniti A.
- and Carson P.
- and Cartelle G.
- and Cassina G.
- and Cauet M.
- and Cenci G.
- and Charles R.
- and Charpentier M.
- and Chefdeville G.
- and Chen M.
- and Cheung S.
- and Chiapolini S. -F.
- and Chrzaszcz N.
- and Clarke G.
- and Clemencic P. E. L.
- and Cliff M.
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- and Wicht M.
- and Wilkinson G.
- and Wilkinson J.
- and Williams M.
- and Williams M.
- and Williams M.
- and Williams M. P.
- and Wilson T.
- and Wimberley F. F.
- and Wishahi J.
- and Wislicki J.
- and Witek W.
- and Wormser M.
- and Wotton G.
- and Wraight S. A.
- and Wright K.
- and Wyllie S.
- and Xie K.
- and Xu Y.
- and Yang Z.
- and Yu Z.
- and Yuan J.
- and Yushchenko X.
- and Zangoli O.
- and Zavertyaev M.
- and Zhang L.
- and Zhang M.
- and Zhelezov Y.
- and Zhokhov A.
- and Zhong A.
- and Zhukov L.
- and Zucchelli V.
- Aquines and Archilli O.
- Campora and Capriotti D.
- Carvalho and Casse K.
- Castillo and Cattaneo L.
- Cavallero Ch. and
- Chatzikonstantinidis Ph. and
- Cid and Ciezarek X.
- Cruz and Cunliffe M.
- De Aguiar and De Bruyn O.
- Ely Ch. and
- Ferreira and Ferro-Luzzi F.
- Garcia and Tico J.
- Garra and Garrido J.
- Giani Ph. and
- Grabalosa and Graciani Diaz M.
- Granado and Grauges L. A.
- Gys Yu. and
- Jr .
- Lhcb Collaboration
- Martins and Massacrier D.
- Molina and Monroy J.
- Osorio and Goicochea B.
- Otalora and Otto J. M.
- Pepe and Perazzini M.
- Puig and Punzi A.
- Rodriguez and Rogozhnikov P.
- S .
- Salustino and Sanchez Mayordomo V.
- Silva and de Oliveira R.
- Silva and Simi L.
- Souza and Spaan B.
- Vazquez and Vazquez Regueiro R.
- Publication venue
- 'IOP Publishing'
- Publication date
- 01/01/2016
- Field of study
A new algorithm for the determination of the initial flavour of B-s(0)
mesons is presented. The algorithm is based on two neural networks and
exploits the b hadron production mechanism at a hadron collider. The
first network is trained to select charged kaons produced in association
with the B-s(0) meson. The second network combines the kaon charges to
assign the B-s(0) flavour and estimates the probability of a wrong
assignment. The algorithm is calibrated using data corresponding to an
integrated luminosity of 3 fb(-1) collected by the LHCb experiment in
proton-proton collisions at 7 and 8 TeV centre-of-mass energies. The
calibration is performed in two ways: by resolving the B-s(0)-B-s(0)
flavour oscillations in B-s(0) -> D-s(-)pi(+) decays, and by analysing
flavour-specific B-s2*(5840)(0) -> B+K- decays. The tagging power
measured in B-s(0) -> D-s(-)pi(+) decays is found to be (1.80 +/- 0.19 (
stat) +/- 0.18 (syst)) which is an improvement of about 50% compared
to a similar algorithm previously used in the LHCb experiment
First observation of the rare B+ -> D+K+pi(-) decay
- Author
- Aaij R. and Abellan Beteta
- Alvarez and Alves P.
- and Adeva C.
- and Adinolfi B.
- and Affolder M.
- and Ajaltouni A.
- and Akar Z.
- and Akiba L.
- and Albrecht S.
- and Alessio J.
- and Alexander F.
- and Ali M.
- and Alkhazov S.
- and Altarelli G.
- and Amato A. A.
- and Amerio S.
- and Amhis S.
- and An Y.
- and Anderlini L.
- and Andreassi L.
- and Andreotti G.
- and Andrews M.
- and Appleby J. E.
- and Artamonov P.
- and Artuso A.
- and Aslanides M.
- and Auriemma E.
- and Baalouch G.
- and Bachmann M.
- and Back S.
- and Badalov J. J.
- and Baesso A.
- and Baldini C.
- and Barlow W.
- and Barschel R. J.
- and Barsuk C.
- and Barter S.
- and Batozskaya W.
- and Battista V.
- and Bay V.
- and Beaucourt A.
- and Beddow L.
- and Bedeschi J.
- and Bediaga F.
- and Bel I.
- and Bellee L. J.
- and Belloli V.
- and Belyaev N.
- and Ben-Haim I.
- and Bencivenni E.
- and Benson G.
- and Benton S.
- and Berezhnoy J.
- and Bernet A.
- and Bertolin R.
- and Bettler A.
- and Bifani M.
- and Billoir S.
- and Bird P.
- and Birnkraut T.
- and Bizzeti A.
- and Blake A.
- and Blanc T.
- and Blouw F.
- and Blusk J.
- and Bocci S.
- and Bondar A.
- and Bondar V.
- and Bonivento N.
- and Borghi W.
- and Borisyak S.
- and Borsato M.
- and Bowcock M.
- and Bowen T. J. V.
- and Bozzi E.
- and Braun C.
- and Britsch S.
- and Britton M.
- and Brodzicka T.
- and Brook J.
- and Buchanan N. H.
- and Burr E.
- and Bursche C.
- and Buytaert A.
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- Aquines and Archilli O.
- Campora and Capriotti D.
- Carvalho and Casse K.
- Castillo and Cattaneo L.
- Cavallero Ch. and
- Chefdeville Ph. and
- Cid and Ciezarek X.
- Cruz and Cunliffe M.
- Dosil and Dovbnya A.
- Ely Ch. and
- Garra and Garrido J.
- Giani Ph. and
- Gys Yu. and
- Hernando and van Herwijnen J. A.
- Jr .
- Lemos and Leroy E.
- Lhcb Collaboration
- Lucio and Luo M.
- Pepe and Perazzini M.
- Puig and Punzi A.
- Rodriguez and Roiser P.
- Ruiz and Saborido Silva P.
- S .
- Silva and Silva de Oliveira R.
- Publication venue
- 'American Physical Society (APS)'
- Publication date
- 01/01/2016
- Field of study
The B+ -> D+K+pi(-) decay is observed in a data sample corresponding to
3.0 fb(-1) of pp collision data recorded by the LHCb experiment during
2011 and 2012. The signal significance is 8 sigma and the branching
fraction is measured to be B(B+ -> D+K+pi(-)) = (5.31 +/- 0.90 +/- 0.48
+/- 0.35) x 10(-6), where the uncertainties are statistical, systematic
and due to the normalization mode B+ -> D-K+pi(+), respectively. The
Dalitz plot appears to be dominated by broad structures. Angular
distributions are exploited to search for quasi-two-body contributions
from B+ -> D*(2)(2460)K-0(+) and B+ -> (D+K*)(892)(0) decays. No
significant signals are observed and upper limits are set on their
branching fractions
Study of the production of A(b)(0) and (B)over-bar(0) hadrons in pp collisions and first measurement of the A(b)(0)-> J/psi pK(-) branching fraction
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- Jr .
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- The LHcb Collaboration
- Vazquez and Regueiro R.
- Vazquez and Sierra P.
- Vazquez and Vecchi C.
- Vieites and Vilasis-Cardona M.
- Publication venue
- 'IOP Publishing'
- Publication date
- 01/01/2016
- Field of study
The product of the A(b)(0) ((B) over bar (0)) differential production
cross-section and the branching fraction of the decay A(b)(0)-> J/psi
pK(-) ((B) over bar (0)-> J/psi p (K) over bar*(892)(0)) is measured
as a function of the beauty hadron transverse momentum, p(T), and
rapidity, y. The kinematic region of the measurements is p(T) <20 GeV/c
and 2.0 < y < 4.5. The measurements use a data sample corresponding to
an integrated luminosity of 3fb(-1) collected by the LHCb detector in pp
collisions at centre-of-mass energies root s=7 TeV in 2011 and root s=8
TeV in 2012. Based on previous LHCb results of the fragmentation
fraction ratio, f(Ab0)/f(d), the branching fraction of the decay
A(b)(0)-> J/psi pK(-) is measured to be
B(A(b)(0)-> J/psi pK(-))=(3.17 +/- 0.04 +/- 0.07 +/-
0.34(-0.28)(+0.45))x10(-4)
where the first uncertainty is statistical, the second is systematic,
the third is due to the uncertainty on the branching fraction of the
decay (B) over bar (0)-> J/psi p (K) over bar*(892)(0), and the fourth
is due to the knowledge of f(Ab0)/f(d). The sum of the asymmetries in
the production and decay between A(b)(0) and (A) over bar (0)(b) is also
measured as a function of p(T) and y. The previously published branching
fraction of A(b)(0)-> J/psi p pi(-), relative to that of A(b)(0)-> J/psi
pK(-), is updated. The branching fractions of A(b)(0)-> P-c(+)(-> J/psi
p)K- are determined
Model-independent measurement of mixing parameters in D-0 -> K-S(0)pi(+)pi(-) decays
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- Aquines and Archilli O.
- Campora and Capriotti D.
- Castillo and Cattaneo L.
- Cavallero Ch. and
- Chefdeville Ph. and
- Cid and Ciezarek X.
- Ely Ch. and
- Garra and Garrido J.
- Giani Ph. and
- Grabalosa and Graciani Diaz M.
- Granado and Grauges L. A.
- Gys Yu and
- Jr .
- Lhcb Collaboration
- Pepe and Perazzini M.
- Puig and Punzi A.
- Rodriguez and Roiser P.
- S .
- Silva and Silva de Oliveira R.
- Vazquez and Vazquez Regueiro R.
- Publication venue
- 'Springer Science and Business Media LLC'
- Publication date
- 01/01/2016
- Field of study
The first model-independent measurement of the charm mixing parameters
in the decay D-0 -> K-S(0)pi(+)pi(-) is reported, using a sample of pp
collision data recorded by the LHCb experiment, corresponding to an
integrated luminosity of 1.0 fb(-1) at a centre-of-mass energy of 7 TeV.
The measured values are
x = (0.86 +/- 0.53 +/- 0.17) x 10(-2), y = (+0.03 +/- 0.46 +/- 0.13) x
10(-2),
where the first uncertainties are statistical and include small
contributions due to the external input for the strong phase measured by
the CLEO collaboration, and the second uncertainties are systematic
Observation of the B (s) (0) -> aEuro parts per thousand J/psi I center dot I center dot decay
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- Jr .
- Lhcb Collaboration
- Pepe and Perazzini M.
- Puig and Punzi A.
- Rodriguez and Roiser P.
- Ruiz and Saborido Silva P.
- S .
- Silva and Simi R.
- Publication venue
- 'Springer Science and Business Media LLC'
- Publication date
- 01/01/2016
- Field of study
The B (s) (0) -> aEuro parts per thousand J/psi I center dot I center
dot decay is observed in pp collision data corresponding to an
integrated luminosity of 3 fb(-1) recorded by the LHCb detector at
centre-of-mass energies of 7 TeV and 8 TeV. This is the first
observation of this decay channel, with a statistical significance of 15
standard deviations. The mass of the B (s) (0) meson is measured to be
5367.08 +/- 0.38 +/- 0.15 MeV/c(2). The branching fraction ratio
a?not sign(B (s) (0) -> aEuro parts per thousand J/psi I center dot I
center dot)/a?not sign(B (s) (0) -> aEuro parts per thousand J/psi I
center dot) is measured to be 0.0115 +/- A 0.0012 (-aEuro parts per
thousand 0.0009) (+ 0.0005) . In both cases, the first uncertainty is
statistical and the second is systematic. No evidence for non-resonant B
(s) (0) -> aEuro parts per thousand J/psi I center dot K (+) K (-) or B
(s) (0) -> aEuro parts per thousand J/psi K (+) K (-) K (+) K (-) decays
is found
- …