Search for CP violation in Lambda(0)(b)-> pK(- )and Lambda(0)(b) -> p pi(-) decays
R. Aaij,B. Adeva,M. Adinolfi, C. A. Aidala, Z. Ajaltouni,S. Akar,P. Albicocco,J. Albrecht, F. Alessio, M. Alexander,A. Alfonso Albero,S. Ali, G. Alkhazov,P. Alvarez Cartelle,A. A. Alves Jr,S. Amato,S. Amerio,Y. Amhis, L. An, L. Anderlini, G. Andreassi, M. Andreotti,J. E. Andrews,R. B. Appleby,F. Archilli, P. d'Argent,J. Arnau Romeu,A. Artamonov,M. Artuso, K. Arzymatov, E. Aslanides,M. Atzeni, B. Audurier,S. Bachmann,J. J. Back, S. Baker, Balagura,W. Baldini,A. Baranov,R. J. Barlow, S. Barsuk,W. Barter,F. Baryshnikov, Batozskaya, B. Batsukh, Battista, A. Bay, J. Beddow,F. Bedeschi, I Bediaga, A. Beiter, L. J. Bel,S. Belin,N. Beliy, Bellee, N. Belloli, K. Belous, I Belyaev, E. Ben-Haim, G. Bencivenni,S. Benson,S. Beranek,A. Berezhnoy, R. Bernet, D. Berninghoff, E. Bertholet, A. Bertolin,C. Betancourt,F. Betti,M. O. Bettler,M. van Beuzekom,Ia Bezshyiko,S. Bhasin, J. Bhom,S. Bifani, P. Billoir, A. Birnkraut, A. Bizzeti,M. Bjorn,M. P. Blago,T. Blake,F. Blanc,S. Blusk, D. Bobulska, Bocci,O. Boente Garcia, T. Boettcher,A. Bondar, N. Bondar, S. Borghi,M. Borisyak, M. Borsato, F. Bossu, M. Boubdir,T. J. Bowcock,C. Bozzi,S. Braun, M. Brodski,J. Brodzicka,A. Brossa Gonzalo,D. Brundu, E. Buchanan, A. Buonaura,C. Burr, A. Bursche, J. Buytaert,W. Byczynski,S. Cadeddu,H. Cai,R. Calabrese, R. Calladine,M. Calvi,M. Calvo Gomez, A. Camboni,P. Campana,D. H. Campora Perez,L. Capriotti,A. Carbone, G. Carboni,R. Cardinale, A. Cardini,P. Carniti,L. Carson,K. Carvalho Akiba,G. Casse, L. Cassina,M. Cattaneo,G. Cavallero, R. Cenci,D. Chamont,M. G. Chapman,M. Charles,Ph Charpentier,G. Chatzikonstantinidis, M. Chefdeville, Chekalina,C. Chen,S. Chen,S-G Chitic, Chobanova, M. Chrzaszcz, A. Chubykin, P. Ciambrone,X. Cid Vidal, G. Ciezarek, P. E. L. Clarke, M. Clemencic,H. Cliff, J. Closier,J. A. B. Coelho,J. Cogan, E. Cogneras, L. Cojocariu,P. Collins, T. Colombo, A. Comerma-Montells,A. Contu,G. Coombs,S. Coquereau,G. Corti, M. Corvo,C. M. Costa Sobral, B. Couturier,G. A. Cowan,D. C. Craik, A. 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PHYSICS LETTERS B（2018）
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摘要
A search for CP violation in Lambda(0)(b)-> pK(-) and Lambda(0)(b) -> p pi(-) decays is presented using a sample of pp collisions collected with the LHCb detector and corresponding to an integrated luminosity of 3.0fb(-1). The CP-violating asymmetries are measured to be A(CP)(pK-) ( = -0.020 +/- 0.013 +/- 0.019 and A(CP)(p pi-) = -0.035 +/- 0.017 +/- 0.020, and their difference A(CP)(pK-) - A(CP)(p pi-) = 0.014 +/- 0.022 +/- 0.010, where the first uncertainties are statistical and the second systematic. These are the most precise measurements of such asymmetries to date. (C) 2018 The Author(s). Published by Elsevier B.V.
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