Measurement of the B0-(B)over-bar0 oscillation frequency with inclusive dilepton events -: art. no. 221803

被引:22
作者
Aubert, B [1 ]
Boutigny, D
Gaillard, JM
Hicheur, A
Karyotakis, Y
Lees, JP
Robbe, P
Tisserand, V
Palano, A
Pompili, A
Chen, GP
Chen, JC
Qi, ND
Rong, G
Wang, P
Zhu, YS
Eigen, G
Stugu, B
Abrams, GS
Borgland, AW
Breon, AB
Brown, DN
Button-Shafer, J
Cahn, RN
Clark, AR
Gill, MS
Gritsan, AV
Groysman, Y
Jacobsen, RG
Kadel, RW
Kadyk, J
Kerth, LT
Kolomensky, YG
Kral, JF
LeClerc, C
Levi, ME
Lynch, G
Oddone, PJ
Pripstein, M
Roe, NA
Romosan, A
Ronan, MT
Shelkov, VG
Telnov, AV
Wenzel, WA
Bright-Thomas, PG
Harrison, TJ
Hawkes, CM
Knowles, DJ
O'Neale, SW
机构
[1] Lab Annecy Le Vieux Phys Particules, F-74941 Annecy Le Vieux, France
[2] Univ Bari, Dipartimento Fis, I-70126 Bari, Italy
[3] Ist Nazl Fis Nucl, I-70126 Bari, Italy
[4] Inst High Energy Phys, Beijing 100039, Peoples R China
[5] Univ Bergen, Inst Phys, N-5007 Bergen, Norway
[6] Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA
[7] Univ Birmingham, Birmingham B15 2TT, W Midlands, England
[8] Ruhr Univ Bochum, Inst Expt Phys, D-44780 Bochum, Germany
[9] Univ Bristol, Bristol BS8 1TL, Avon, England
[10] Univ British Columbia, Vancouver, BC V6T 1Z1, Canada
[11] Brunel Univ, Uxbridge UB8 3PH, Middx, England
[12] Budker Inst Nucl Phys, Novosibirsk 630090, Russia
[13] Univ Calif Irvine, Irvine, CA 92697 USA
[14] Univ Calif Los Angeles, Los Angeles, CA 90024 USA
[15] Univ Calif San Diego, La Jolla, CA 92093 USA
[16] Univ Calif Santa Barbara, Santa Barbara, CA 93106 USA
[17] Univ Calif Santa Cruz, Inst Particle Phys, Santa Cruz, CA 95064 USA
[18] CALTECH, Pasadena, CA 91125 USA
[19] Univ Cincinnati, Cincinnati, OH 45221 USA
[20] Univ Colorado, Boulder, CO 80309 USA
[21] Colorado State Univ, Ft Collins, CO 80523 USA
[22] Tech Univ Dresden, Inst Kern & Teilchenphys, D-01062 Dresden, Germany
[23] Ecole Polytech, F-91128 Palaiseau, France
[24] Univ Edinburgh, Edinburgh EH9 3JZ, Midlothian, Scotland
[25] Elon Univ, Elon College, NC 27244 USA
[26] Univ Ferrara, Dipartimento Fis, I-44100 Ferrara, Italy
[27] Ist Nazl Fis Nucl, I-44100 Ferrara, Italy
[28] Florida A&M Univ, Tallahassee, FL 32307 USA
[29] Ist Nazl Fis Nucl, Lab Nazl Frascati, I-00044 Frascati, Italy
[30] Univ Genoa, Dipartimento Fis, I-16146 Genoa, Italy
[31] Ist Nazl Fis Nucl, I-16146 Genoa, Italy
[32] Harvard Univ, Cambridge, MA 02138 USA
[33] Univ Iowa, Iowa City, IA 52242 USA
[34] Iowa State Univ, Ames, IA 50011 USA
[35] Lab Accelerateur Lineaire, F-91898 Orsay, France
[36] Lawrence Livermore Natl Lab, Livermore, CA 94550 USA
[37] Univ Liverpool, Liverpool L69 3BX, Merseyside, England
[38] Univ London Imperial Coll Sci Technol & Med, London SW7 2BW, England
[39] Univ London Queen Mary Coll, London E1 4NS, England
[40] Univ London Royal Holloway & Bedford New Coll, Egham TW20 0EX, Surrey, England
[41] Univ Louisville, Louisville, KY 40292 USA
[42] Univ Manchester, Manchester M13 9PL, Lancs, England
[43] Univ Maryland, College Pk, MD 20742 USA
[44] Univ Massachusetts, Amherst, MA 01003 USA
[45] MIT, Nucl Sci Lab, Cambridge, MA 02139 USA
[46] McGill Univ, Montreal, PQ H3A 2T8, Canada
[47] Univ Milan, Dipartimento Fis, I-20133 Milan, Italy
[48] Ist Nazl Fis Nucl, I-20133 Milan, Italy
[49] Univ Mississippi, University, MS 38677 USA
[50] Univ Montreal, Lab Rene JA Levesque, Montreal, PQ H3C 3J7, Canada
关键词
D O I
10.1103/PhysRevLett.88.221803
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
The B-0-(B) over bar (0) oscillation frequency has been measured with a sample of 23x10(6) B (B) over bar pairs collected with the BABAR detector at the PEP-II asymmetric B Factory at SLAC. In this sample, we select events in which both B mesons decay semileptonically and use the charge of the leptons to identify the flavor of each B meson. A simultaneous fit to the decay time difference distributions for opposite- and same-sign dilepton events gives Deltam(d)=0.493+/-0.012(stat )+/-0.009(syst) ps(-1) .
引用
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页数:7
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