Measurements of the branching fraction and time-dependent CP asymmetries of B0→J/ψπ0 decays

被引:0
作者
Aubert, B. [1 ]
Barate, R.
Boutigny, D.
Couderc, F.
Karyotakis, Y.
Lees, J. P.
Poireau, V.
Tisserand, V.
Zghiche, A.
Grauges, E.
Palano, A.
Pappagallo, M.
Chen, J. C.
Qi, N. D.
Rong, G.
Wang, P.
Zhu, Y. S.
Eigen, G.
Ofte, I.
Stugu, B.
Abrams, G. S.
Battaglia, M.
Best, D. S.
Brown, D. N.
Button-Shafer, J.
Cahn, R. N.
Charles, E.
Day, C. T.
Gill, M. S.
Gritsan, A. V.
Groysman, Y.
Jacobsen, R. G.
Kadel, R. W.
Kadyk, J. A.
Kerth, L. T.
Kolomensky, Yu. G.
Kukartsev, G.
Lynch, G.
Mir, L. M.
Oddone, P. J.
Orimoto, T. J.
Pripstein, M.
Roe, N. A.
Ronan, M. T.
Wenzel, W. A.
Barrett, M.
Ford, K. E.
Harrison, T. J.
Hart, A. J.
Hawkes, C. M.
机构
[1] Phys Particules Lab, F-74941 Annecy Le Vieux, France
[2] Univ Autonoma Barcelona, IFAE, E-08193 Barcelona, Spain
[3] Univ Bari, Dipartmento Fis, I-70126 Bari, Italy
[4] Ist Nazl Fis Nucl, I-70126 Bari, Italy
[5] Inst High Energy Phys, Beijing 100039, Peoples R China
[6] Univ Bergen, Inst Phys, N-5007 Bergen, Norway
[7] Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA
[8] Univ Birmingham, Birmingham B15 2TT, W Midlands, England
[9] Ruhr Univ Bochum, Inst Expt Phys 1, D-44780 Bochum, Germany
[10] Univ Bristol, Bristol BS8 1TL, Avon, England
[11] Univ British Columbia, Vancouver, BC V6T 1Z1, Canada
[12] Brunel Univ, Uxbridge UB8 3PH, Middx, England
[13] Budker Inst Nucl Phys, Novosibirsk 630090, Russia
[14] Univ Calif Irvine, Irvine, CA 92697 USA
[15] Univ Calif Los Angeles, Los Angeles, CA 90024 USA
[16] Univ Calif Riverside, Riverside, CA 92521 USA
[17] Univ Calif San Diego, La Jolla, CA 92093 USA
[18] Univ Calif Santa Barbara, Santa Barbara, CA 93106 USA
[19] Univ Calif Santa Cruz, Inst Particle Phys, Santa Cruz, CA 95064 USA
[20] CALTECH, Pasadena, CA 91125 USA
[21] Univ Cincinnati, Cincinnati, OH 45221 USA
[22] Univ Colorado, Boulder, CO 80309 USA
[23] Colorado State Univ, Ft Collins, CO 80523 USA
[24] Univ Dortmund, Inst Phys, D-44221 Dortmund, Germany
[25] Tech Univ Dresden, Inst Kern & Teilchenphys, D-01062 Dresden, Germany
[26] Ecole Polytech, F-91128 Palaiseau, France
[27] Univ Edinburgh, Edinburgh EH9 3JZ, Midlothian, Scotland
[28] Univ Ferrara, Dipartmento Fis, I-44100 Ferrara, Italy
[29] Ist Nazl Fis Nucl, I-44100 Ferrara, Italy
[30] Ist Nazl Fis Nucl, Lab Nazl Frascati, I-00044 Frascati, Italy
[31] Univ Genoa, Dipartimento Fis, I-16146 Genoa, Italy
[32] Ist Nazl Fis Nucl, I-16146 Genoa, Italy
[33] Harvard Univ, Cambridge, MA 02138 USA
[34] Heidelberg Univ, Inst Phys, D-69120 Heidelberg, Germany
[35] Univ London Imperial Coll Sci Technol & Med, London SW7 2AZ, England
[36] Univ Iowa, Iowa City, IA 52242 USA
[37] Iowa State Univ, Ames, IA 50011 USA
[38] Univ Karlsruhe, Inst Expt Kernphys, D-76021 Karlsruhe, Germany
[39] Lab Accelerateur Lineaire, F-91898 Orsay, France
[40] Lawrence Livermore Natl Lab, Livermore, CA 94550 USA
[41] Univ Liverpool, Liverpool L69 7ZE, Merseyside, England
[42] Univ London, London E1 4NS, England
[43] Univ London Royal Holloway & Bedford New Coll, Egham TW20 0EX, Surrey, England
[44] Univ Louisville, Louisville, KY 40292 USA
[45] Univ Manchester, Manchester M13 9PL, Lancs, England
[46] Univ Maryland, College Pk, MD 20742 USA
[47] Univ Massachusetts, Amherst, MA 01003 USA
[48] MIT, Nucl Sci Lab, Cambridge, MA 02129 USA
[49] McGill Univ, Montreal, PQ H3A 2T8, Canada
[50] Univ Milan, Dipartimento Fis, I-20133 Milan, Italy
基金
英国科学技术设施理事会;
关键词
D O I
10.1103/PhysRevD.74.011101
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
We present measurements of the branching fraction and time-dependent CP asymmetries in B-0 -> J/psi pi(0) decays based on (231.8 +/- 2.6)x10(6) Upsilon(4S)-> B (B) over bar decays collected with the BABAR detector at the SLAC PEP-II asymmetric-energy B factory. We obtain a branching fraction B(B-0 -> J/psi pi(0))=(1.94 +/- 0.22(stat)+/- 0.17(syst))x10(-5). We also measure the CP asymmetry parameters C=-0.21 +/- 0.26(stat)+/- 0.06(syst) and S=-0.68 +/- 0.30(stat)+/- 0.04(syst).
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页数:8
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