Measurement Of The Time-Dependent Cp Asymmetry In The B-0 ->Phi K-0 Decay
B. Aubert,R. Barate,D. Boutigny,F. Couderc,J.-M. Gaillard,A. Hicheur,Y. Karyotakis,J. P. Lees,V. Tisserand,A. Zghiche,A. Palano,A. Pompili,J. C. Chen,N. D. Qi,G. Rong,P. Wang, Y. S. Zhu,G. Eigen,I. Ofte,B. Stugu,G. S. Abrams,A. W. Borgland,A. B. Breon,D. N. Brown,J. Button-Shafer,R. N. Cahn,E. Charles,C. Day,M. Gill,A. Gritsan,Y. Groysman,R. Jacobsen,R. Kadel,J. Kadyk,L. Kerth,Yu. Kolomensky,G. Kukartsev,C. LeClerc,G. Lynch,A. Merchant,L. Mir,P. Oddone,T. Orimoto,M. Pripstein,N. Roe,M. Ronan,V. Shelkov,A. Telnov,W. Wenzel,K. Ford,T. Harrison,C. Hawkes,S. Morgan,A. Watson,M. Fritsch,K. Goetzen,T. Held,H. Koch,B. Lewandowski,M. Pelizaeus,M. Steinke,J. Boyd,N. Chevalier,W. Cottingham,M. Kelly,T. Latham,F. Wilson,T. Cuhadar-Donszelmann,C. Hearty,T. Mattison,J. McKenna,D. Thiessen,P. Kyberd,L. Teodorescu,V. Blinov,A. Bukin,V. Druzhinin,V. Golubev,V. Ivanchenko,E. Kravchenko,A. Onuchin,S. Serednyakov,Yu. Skovpen,E. Solodov,A. Yushkov,D. Best,M. Bruinsma,M. Chao, I. Eschrich,D. Kirkby,A. 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Bosisio,C. Cartaro,F. Cossutti,G. Della Ricca,S. Dittongo,S. Grancagnolo,L. Lanceri,P. Poropat,L. Vitale,G. Vuagnin,R. Panvini,Sw. Banerjee,C. Brown,D. Fortin,P. Jackson,R. Kowalewski,J. Roney,H. Band,S. Dasu,M. Datta,F. Di Lodovico,A. Eichenbaum,J. Hollar,J. Johnson,P. Kutter,H. Li,R. Liu,A. Mihalyi,A. Mohapatra,Y. Pan,R. Prepost,S. Sekula,P. Tan,J. von Wimmersperg-Toeller,J. Wu,S. Wu,Z. Yu,H. Neal
PHYSICAL REVIEW LETTERS（2004）
引用 39|浏览334
摘要
We present a measurement of the time-dependent CP asymmetry for the neutral B-meson decay B-0-->phiK(0). We use a sample of approximately 114x10(6) B-meson pairs taken at the Y(4S) resonance with the BABAR detector at the PEP-II B-meson factory at SLAC. We reconstruct the CP eigenstates phiK(S)(0) and phiK(L)(0), where phi-->K+K-, K-S(0)-->pi(+)pi(-), and K-L(0) is observed via its hadronic interactions. The other B meson in the event is tagged as either a B-0 or (B) over bar (0) from its decay products. The values of the CP-violation parameters are S-phiK=0.47+/-0.34(stat)(-0.06)(+0.08)(syst) and C-phiK=0.01+/-0.33(stat)+/-0.10(syst).
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关键词
it,medicine,mathematics,physics,cp violation,time reversal,apply,elementary particles,biology
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