Measurement Of The Cp-Violating Phase Phi(S) In (B)Over-Bar(S)(0) -> Ds+Ds- Decays
R Aaij,C Abellan Beteta,B Adeva,M Adinolfi,A Affolder,Z Ajaltouni,S Akar,J Albrecht,F Alessio,M Alexander,Shadan Ali,G Alkhazov,P Alvarez Cartelle,A A Alves,S Amato,S Amerio,Y Amhis,L An,L Anderlini,J L Anderson,R Andreassen,M Andreotti,J E Andrews,R B Appleby,O Aquines Gutierrez,F Archilli,A Artamonov,M Artuso,E Aslanides,G Auriemma,M Baalouch,S Bachmann,J J Back,A Badalov,C Baesso,W Baldini,R J Barlow,C Barschel,S Barsuk,W Barter,V Batozskaya,V Battista,A Bay,L Beaucourt,J Beddow,F Bedeschi,I Bediaga,S Belogurov,K Belous,I Belyaev,E Benhaim, 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,J Blouw,S Blusk,V Bocci,A Bondar,N Bondar,W Bonivento,S Borghi,A Borgia,M Borsato,T J V Bowcock,E Bowen,C Bozzi,T Brambach,D Brett,M Britsch,T Britton,J Brodzicka,N H Brook,H Brown,A Bursche,G Busetto,J Buytaert,S Cadeddu,Ronald L Calabrese,M Calvi,M Calvo Gomez,P Campana,D Campora Perez,A Carbone,G 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Schindler,M Schlupp,M Schmelling,B Schmidt,O Schneider,A Schopper,M H Schune,R Schwemmer,B Sciascia, A Sciubba,M Seco,A Semennikov, I Sepp,N Serra,J Serrano,L Sestini,P Seyfert,M Shapkin,I Shapoval,Y Shcheglov,T Shears,L Shekhtman,V Shevchenko,A Shires,R Silva Coutinho,G Simi,M Sirendi,N Skidmore,I O Skillicorn,T Skwarnicki,N A Smith,E Smith,J G Smith,Mark J T Smith,H Snoek,M D Sokoloff,F J P Soler,F Soomro,D Souza,B Souza De Paula,B Spaan,P Spradlin,S Sridharan,F Stagni,M Stahl,S Stahl,O Steinkamp,O Stenyakin,S Stevenson,S Stoica,S Stone,B Storaci,S Stracka,M Straticiuc,U Straumann,R Stroili,V K Subbiah,L Sun,W Sutcliffe,K Swientek,S Swientek,V Syropoulos,M Szczekowski,P Szczypka,D Szilard,T Szumlak,S Tjampens,M Teklishyn,G Tellarini,F Teubert, C B Thomas,E W Thomas,J Van Tilburg,V Tisserand,M Tobin,John A Todd,S Tolk,L Tomassetti,D Tonelli,S Toppjoergensen,N Torr,E Tournefier,S Tourneur,M T Tran,M Tresch,A Tsaregorodtsev,P Tsopelas,N Tuning,M Ubeda Garcia,A Ukleja,A Ustyuzhanin,U 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PHYSICAL REVIEW LETTERS（2014）
引用 34|浏览422
摘要
We present a measurement of the CP-violating weak mixing phase phi(s) using the decay (B) over bar (0)(s) -> Ds+Ds- in a data sample corresponding to 3.0 fb(-1) of integrated luminosity collected with the LHCb detector in pp collisions at center-of-mass energies of 7 and 8 TeV. An analysis of the time evolution of the system, which does not use the constraint vertical bar lambda vertical bar = 1 to allow for the presence of CP violation in decay, yields phi(s) = 0.02 +/- 0.17(stat) +/- 0.02(syst) rad, vertical bar lambda vertical bar = 0.91(-0.15)(+0.18)(stat) +/- 0.02(syst). This result is consistent with the standard model expectation.
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