Measurement of the time-dependent CP asymmetry in B0 -> J/{\psi} KS0 decays
R Aaij,C Abellan Beteta,A Adametz,B Adeva, M Adinolfi, C Adrover,A Affolder, Z Ajaltouni,J Albrecht, F Alessio,M Alexander,Shahid Ali, G Alkhazov,P Alvarez Cartelle,A A Alves,S Amato,Y Amhis,L Anderlini,J Anderson,R B Appleby,O Aquines Gutierrez,F Archilli, A Artamonov,M Artuso,E Aslanides,G Auriemma,Sebastian Bachmann,J J Back,C Baesso,W Baldini,R J Barlow,C Barschel,S Barsuk,W Barter,A Bates,Th Bauer, A Bay,J Beddow,I Bediaga,S Belogurov,K Belous,I Belyaev,E Benhaim,M Benayoun, G Bencivenni,S Benson,J Benton, A Berezhnoy,R Bernet,M O Bettler,M Van Beuzekom,A Bien,S Bifani,T D Bird,A Bizzeti,P M Bjornstad,T Blake,F Blanc,C Blanks,J Blouw,S Blusk,A Bobrov,V Bocci,A Bondar,N Bondar,W Bonivento,S Borghi,A Borgia,T J V Bowcock,C Bozzi,T Brambach,J Van Den Brand,J Bressieux,D Brett,M Britsch,T Britton,N H Brook,H Brown, A Buchlergermann, I Burducea,A Bursche,J Buytaert,S Cadeddu, O Callot, M Calvi,M Calvo Gomez,A Camboni, P Campana,A Carbone,G Carboni,R Cardinale, A Cardini,H 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PHYSICS LETTERS B（2013）
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摘要
This Letter reports a measurement of the CP violation observables S-J/psi KS0 and C-J/psi KS0 in the decay channel B-0 -> J/psi K-S(0) performed with 1.0 fb(-1) of pp collisions at root s = 7 TeV collected by the LHCb experiment. The fit to the data yields S-J/psi KS0 = 0.73 +/- 0.07(stat) +/- 0.04(syst) and C-J/psi KS0 = 0.03 +/- 0.09(stat) +/- 0.01 (syst). Both values are consistent with the current world averages and within expectations from the Standard Model. (C) 2013 CERN. Published by Elsevier B.V. All rights reserved.
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