Search For T And Cp Violation In B-0-(B)Over-Bar(0) Mixing With Inclusive Dilepton Events
Bernard Aubert, D. Boutigny,J.-M. Gaillard, A. Hicheur,Y. Karyotakis,J. P. Lees,P. Robbe,V. Tisserand,A. Zghiche,A. Palano, A. Pompili,G. P. Chen,J. C. Chen,N. D. Qi,G. Rong, P. Wang,Y. S. Zhu,G. Eigen, B. Stugu,G. S. Abrams, A. W. Borgland,A. B. Breon,D. N. Brown,J. Button-Shafer,R. N. Cahn,M. S. Gill,A. V. Gritsan,Y. Groysman,R. G. Jacobsen,R. W. Kadel,J. Kadyk,L. T. Kerth,Yu G Kolomensky,J. F. Kral,C. LeClerc,M. E. Levi,G. Lynch,P. J. Oddone,M. Pripstein,N. A. Roe,A. Romosan,M. T. Ronan,V. G. Shelkov,A. V. Telnov,W. A. Wenzel,T. J. Harrison,C. M. Hawkes,D. J. Knowles,S. W. O'Neale,R. C. Penny, A. T. Watson,N. K. Watson,T. Deppermann,K. Goetzen,H. Koch,M. Kunze,B. Lewandowski,K. Peters,H. Schmuecker, M. Steinke,N. R. Barlow, W. Bhimji,N. Chevalier,P. J. Clark,W. N. Cottingham,B. Foster,C. Mackay,F. F. Wilson,K. Abe,C. Hearty,T. S. Mattison,J. A. McKenna,D. Thiessen,S. Jolly,A. K. McKemey,V. E. Blinov,A. D. Bukin,D. A. Bukin,A. R. Buzykaev,V. B. Golubev,V. N. Ivanchenko, A. A. Korol,E. A. Kravchenko,A P Onuchin,S I Serednyakov,Yu I Skovpen,V I Telnov,A N Yushkov,D. Best,M. Chao,D. Kirkby,A J Lankford,M. Mandelkern,S. McMahon,D P Stoker, K. Arisaka,C. Buchanan,S. Chun, D B MacFarlane, S. Prell,Sh. Rahatlou,G. Raven, V. Sharma, C. Campagnari, B. Dahmes,P A Hart,N. Kuznetsova,S L Levy,O. Long,A. Lu,M A Mazur, J D Richman, W. Verkerke, J. Beringer, A M Eisner, M. Grothe, C A Heusch, W S Lockman,T. Pulliam,T. Schalk,R E Schmitz, B A Schumm, A. Seiden,M. Turri, W. Walkowiak,D C Williams, M G Wilson,E. Chen,G P Dubois-Felsmann,A. Dvoretskii,D G Hitlin,S. Metzler,J. Oyang,F C Porter, A. Ryd,S. Yang,R Y Zhu,S. Devmal,S. Jayatilleke, G. Mancinelli,B T Meadows, M D Sokoloff, T. Barillari,P. Bloom, W T Ford, U. Nauenberg,A. Olivas,P. Rankin,J. Roy,J G Smith,W C Van Hoek, L. Zhang,J. Blouw,J L Harton,M. Krishnamurthy, A. Soffer, W H Toki,R J Wilson, J. Zhang,T. Brandt,J. Brose,T. Colberg,M. Dickopp,R S Dubitzky,A. Hauke,E. Maly,R. Müller-Pfefferkorn,S. 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Gamba,L. Bosisio,G. Della Ricca,S. Dittongo,L. Lanceri,P. Poropat,G. Vuagnin, R S Panvini,C M Brown, P D Jackson, R. Kowalewski,J M Roney, H R Band, E. Charles, S. Dasu,M. Datta, A M Eichenbaum,H. Hu,J R Johnson,R. Liu,F. Di Lodovico, Y. Pan,R. Prepost, I J Scott, S J Sekula,J H Von Wimmersperg-Toeller, S L Wu,Z. Yu,T M B Kordich,H. Neal
PHYSICAL REVIEW LETTERS（2002）
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摘要
We report the results of a search for T and CP violation in B-0-(B) over bar (0) mixing using an inclusive dilepton sample collected by the BABAR experiment at the PEP-II B Factory. The asymmetry between .(+).(+) and .(-).(-) events allows us to compare the probabilities for (B) over bar (0)-->B (0) and B-0-->(B) over bar (0) oscillations and thus probe T and CP invariance. Using a sample of 23x10(6) B (B) over bar pairs, we measure a same-sign dilepton asymmetry of A(T/CP)=[0.5+/-1.2(stat) +/-1.4(syst)]% . For the modulus of the ratio of complex mixing parameters p and q , we obtain parallel toq/pparallel to=0.998+/-0.006(stat) +/-0.007(syst) .
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