1 research outputs found
Observation of the Λb0​→J/ψpπ− decay
- Author
- Aaij Roel
- Adeva Bernardo
- Adinolfi Marco
- Affolder Anthony
- Ajaltouni Ziad
- Akar Simon
- Albrecht Johannes
- Alessio Federico
- Alexander Michael
- Ali Suvayu
- Alkhazov Georgy
- Alvarez Cartelle Paula
- Alves Jr Antonio
- Amato Sandra
- Amerio Silvia
- Amhis Yasmine
- An Liupan
- Anderlini Lucio
- Anderson Jonathan
- Andreassen Rolf
- Andreotti Mirco
- Andrews Jason
- Appleby Robert
- Aquines Gutierrez Osvaldo
- Archilli Flavio
- Artamonov Alexander
- Artuso Marina
- Aslanides Elie
- Auriemma Giulio
- Baalouch Marouen
- Bachmann Sebastian
- Back John
- Badalov Alexey
- Balagura Vladislav
- Baldini Wander
- Barlow Roger
- Barschel Colin
- Barsuk Sergey
- Barter William
- Batozskaya Varvara
- Battista Vincenzo
- Bay Aurelio
- Beaucourt Leo
- Beddow John
- Bedeschi Franco
- Bediaga Ignacio
- Belogurov Sergey
- Belous Konstantin
- Belyaev Ivan
- Ben-Haim Eli
- Bencivenni Giovanni
- Benson Sean
- Benton Jack
- Berezhnoy Alexander
- Bernet Roland
- Bettler Marc-Olivier
- Bien Alexander
- Bifani Simone
- Bird Thomas
- Bizzeti Andrea
- Bjørnstad Pål Marius
- Blake Thomas
- Blanc Frédéric
- Blouw Johan
- Blusk Steven
- Bocci Valerio
- Bondar Alexander
- Bondar Nikolay
- Bonivento Walter
- Borghi Silvia
- Borgia Alessandra
- Borsato Martino
- Bowcock Themistocles
- Bowen Espen Eie
- Bozzi Concezio
- Brambach Tobias
- Bressieux Joël
- Brett David
- Britsch Markward
- Britton Thomas
- Brodzicka Jolanta
- Brook Nicholas
- Brown Henry
- Bursche Albert
- Busetto Giovanni
- Buytaert Jan
- Băbeanu Alexandru-Ionut
- Cadeddu Sandro
- Calabrese Roberto
- Calvi Marta
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- Camboni Alessandro
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- Cauet Christophe
- Cenci Riccardo
- Charles Matthew
- Charpentier Philippe
- Chen Shanzhen
- Cheung Shu-Faye
- Chiapolini Nicola
- Chrzaszcz Marcin
- Ciba Krzystof
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- Wishahi Julian
- Wislicki Wojciech
- Witek Mariusz
- Wormser Guy
- Wotton Stephen
- Wright Simon
- Wu Suzhi
- Wyllie Kenneth
- Xie Yuehong
- Xing Zhou
- Xu Zhirui
- Yang Zhenwei
- Yuan Xuhao
- Yushchenko Oleg
- Zangoli Maria
- Zavertyaev Mikhail
- Zhang Liming
- Zhang Wen Chao
- Zhang Yanxi
- Zhelezov Alexey
- Zhokhov Anatoly
- Zhong Liang
- Zvyagin Alexander
- Publication venue
- 'Springer Science and Business Media LLC'
- Publication date
- 04/06/2014
- Field of study
The first observation of the Cabibbo-suppressed decay Λb0​→J/ψpπ− is reported using a data sample of proton-proton collisions at 7 and 8 TeV, corresponding to an integrated luminosity of 3 fb−1. A prominent signal is observed and the branching fraction relative to the decay mode Λb0​→J/ψpK− is determined to be B(Λb0​→J/ψpK−)B(Λb0​→J/ψpπ−)​=0.0824±0.0025(stat)±0.0042(syst). A search for direct CP violation is performed. The difference in the CP asymmetries between these two decays is found to be ACP​(Λb0​→J/ψpπ−)−ACP​(Λb0​→J/ψpK−)=(+5.7±2.3(stat)±1.2(syst))%, which is compatible with CP symmetry at the 2.2σ level