CLNS 00-1668 CLEO 00-6 Precise Measurement of B 0 − B 0 Mixing Parameters at the Υ(4S)

B. H. Behrens,W. T. Ford,A. Gritsan,J. Roy,J. G. Smith,J. P. Alexander, R. Baker,C. Bebek,B. E. Berger,K. Berkelman,F. Blanc,V. Boisvert,D. G. Cassel,M. Dickson,P. S. Drell,K. M. Ecklund,R. Ehrlich,A. D. Foland,P. Gaidarev,L. Gibbons, B. Gittelman,S. W. Gray,D. L. Hartill,B. K. Heltsley,P. I. Hopman,C. D. Jones,D. L. Kreinick,M. Lohner, A. Magerkurth,T. O. Meyer,N. B. Mistry,E. Nordberg,J. R. Patterson,D. Peterson,D. Riley,J. G. Thayer,P. G. Thies,B. Valant-Spaight,A. Warburton,P. Avery,C. Prescott,A. I. Rubiera,J. Yelton,J. Zheng,G. Brandenburg,A. Ershov, Y. S. Gao,D. Y.-J. Kim,R. Wilson,T. E. Browder,Y. Li,J. L. Rodriguez,H. Yamamoto,T. Bergfeld,B. I. Eisenstein,J. Ernst,G. E. Gladding,G. D. Gollin,R. M. Hans,E. Johnson,I. Karliner,M. A. Marsh,M. Palmer,C. Plager,C. Sedlack,M. Selen, J. J. Thaler,J. Williams,K. W. Edwards, R. Janicek,P. M. Patel,A. J. Sadoff,R. Ammar,A. Bean,D. Besson, R. Davis,N. Kwak,X. Zhao,S. Anderson,V. V. Frolov,Y. Kubota, S. J. Lee,R. Mahapatra,J. J. O’Neill,R. Poling,T. Riehle,A. Smith,J. Urheim,S. Ahmed,M. S. Alam,S. B. Athar,L. Jian,L. Ling,A. H. Mahmood,M. Saleem,S. Timm,F. Wappler,A. Anastassov,J. E. Duboscq,K. K. Gan,C. Gwon,T. Hart,K. Honscheid,D. Hufnagel,H. Kagan,R. Kass,T. K. Pedlar,H. Schwarthoff, J. B. Thayer,E. von Toerne,M. M. Zoeller,S. J. Richichi,H. Severini,P. Skubic,A. Undrus,S. Chen,J. Fast,J. W. Hinson,J. Lee,N. Menon,D. H. Miller,E. I. Shibata,I. P. J. Shipsey,V. Pavlunin,D. Cronin-Hennessy,Y. Kwon,A. L. Lyon,E. H. Thorndike,C. P. Jessop,H. Marsiske,M. L. Perl,V. Savinov,D. Ugolini,X. Zhou,T. E. Coan,V. Fadeyev,Y. Maravin,I. Narsky,R. Stroynowski,J. Ye, T. Wlodek,M. Artuso,R. Ayad,C. Boulahouache,K. Bukin,E. Dambasuren,S. Karamov,G. Majumder,G. C. Moneti,R. Mountain,S. Schuh,T. Skwarnicki,S. Stone,G. Viehhauser,J. C. Wang,A. Wolf,J. Wu,S. Kopp,S. E. Csorna,I. Danko,K. W. McLean,Sz. Márka,Z. Xu,R. Godang,K. Kinoshita,I. C. Lai,S. Schrenk,G. Bonvicini,D. Cinabro,S. McGee,L. P. Perera,G. J. Zhou,E. Lipeles,M. Schmidtler,A. Shapiro,W. M. Sun,A. J. Weinstein,F. Würthwein,D. E. Jaffe,G. Masek,H. P. Paar,E. M. Potter, S. Prell,V. Sharma,D. M. Asner,A. Eppich,J. Gronberg,T. S. Hill,R. J. Morrison,H. N. Nelson,R. A. Briere

semanticscholar（2008）

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摘要

We describe a measurement of B−B0 mixing parameters exploiting a method of partial reconstruction of the decay chains B → Dπ and B → Dρ. Using 9.6 ×10BB pairs collected at the Cornell Electron Storage Ring, we find χd = 0.198 ± 0.013 ± 0.014, |yd| < 0.41 at 95% confidence level, and |Re(ǫB)| < 0.034 at 95% confidence level.

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