Study of B→X(3872)K, with X(3872)→J/ψπ+π-

被引：111

作者：

Aubert, B. ^{[1
,2
]}

Bona, M. ^{[1
,2
]}

Karyotakis, Y. ^{[1
,2
]}

Lees, J. P. ^{[1
,2
]}

Poireau, V. ^{[1
,2
]}

Prencipe, E. ^{[1
,2
]}

Prudent, X. ^{[1
,2
]}

Tisserand, V. ^{[1
,2
]}

Tico, J. Garra ^{[3
]}

Grauges, E. ^{[3
]}

Lopez, L. ^{[4
,5
]}

Palano, A. ^{[4
,5
]}

Pappagallo, M. ^{[4
,5
]}

Eigen, G. ^{[6
]}

Stugu, B. ^{[6
]}

Sun, L. ^{[6
]}

Abrams, G. S. ^{[7
,8
]}

Battaglia, M. ^{[7
,8
]}

Brown, D. N. ^{[7
,8
,47
]}

Button-Shafer, J. ^{[7
,8
]}

Cahn, R. N. ^{[7
,8
]}

Jacobsen, R. G. ^{[7
,8
]}

Kadyk, J. A. ^{[7
,8
]}

Kerth, L. T. ^{[7
,8
]}

Kolomensky, Yu. G. ^{[7
,8
]}

Kukartsev, G. ^{[7
,8
]}

Lynch, G. ^{[7
,8
]}

Osipenkov, I. L. ^{[7
,8
]}

Ronan, M. T. ^{[7
,8
]}

Tackmann, K. ^{[7
,8
]}

Tanabe, T. ^{[7
,8
]}

Wenzel, W. A. ^{[7
,8
]}

Hawkes, C. M. ^{[9
]}

Soni, N. ^{[9
]}

Watson, A. T. ^{[9
]}

Koch, H. ^{[10
]}

Schroeder, T. ^{[10
]}

Walker, D. ^{[11
]}

Asgeirsson, D. J. ^{[12
]}

Cuhadar-Donszelmann, T. ^{[12
]}

Fulsom, B. G. ^{[12
]}

Hearty, C. ^{[12
]}

Mattison, T. S. ^{[12
]}

McKenna, J. A. ^{[12
]}

Barrett, M. ^{[13
]}

Khan, A. ^{[13
]}

Saleem, M. ^{[13
]}

Teodorescu, L. ^{[13
]}

Blinov, V. E. ^{[14
]}

Bukin, A. D. ^{[14
]}

机构：

[1] CNRS, IN2P3, Phys Particules Lab, F-74941 Annecy Le Vieux, France

[2] Univ Savoie, F-74941 Annecy Le Vieux, France

[3] Univ Barcelona, Fac Fis, Dept ECM, E-08028 Barcelona, Spain

[4] Univ Bari, Dipartimento Fis, I-70126 Bari, Italy

[5] Ist Nazl Fis Nucl, I-70126 Bari, Italy

[6] Univ Bergen, Inst Phys, N-5007 Bergen, Norway

[7] Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA

[8] Univ Calif Berkeley, Berkeley, CA 94720 USA

[9] Univ Birmingham, Birmingham B15 2TT, W Midlands, England

[10] Ruhr Univ Bochum, Inst Expt Phys 1, D-44780 Bochum, Germany

[11] Univ Bristol, Bristol BS8 1TL, Avon, England

[12] Univ British Columbia, Vancouver, BC V6T 1Z1, Canada

[13] Brunel Univ, Uxbridge UB8 3PH, Middx, England

[14] Budker Inst Nucl Phys, Novosibirsk 630090, Russia

[15] Univ Calif Irvine, Irvine, CA 92697 USA

[16] Univ Calif Los Angeles, Los Angeles, CA 90024 USA

[17] Univ Calif Riverside, Riverside, CA 92521 USA

[18] Univ Calif San Diego, San Diego, CA 92093 USA

[19] Univ Calif Santa Barbara, Santa Barbara, CA 93106 USA

[20] Univ Calif Santa Cruz, Inst Particle Phys, Santa Cruz, CA 95064 USA

[21] CALTECH, Pasadena, CA 91125 USA

[22] Univ Cincinnati, Cincinnati, OH 45221 USA

[23] Univ Colorado, Boulder, CO 80309 USA

[24] Colorado State Univ, Ft Collins, CO 80523 USA

[25] Tech Univ Dortmund, Fak Phys, D-44221 Dortmund, Germany

[26] Tech Univ Dresden, Inst Kern & Teilchenphys, D-01062 Dresden, Germany

[27] Ecole Polytech, CNRS, IN2P3, Lab Leprince Ringuet, F-91128 Palaiseau, France

[28] Univ Edinburgh, Edinburgh EH9 3JZ, Midlothian, Scotland

[29] Univ Ferrara, Dipartimento Fis, I-44100 Ferrara, Italy

[30] Ist Nazl Fis Nucl, I-44100 Ferrara, Italy

[31] Ist Nazl Fis Nucl, Lab Nazl Frascati, I-00044 Frascati, Italy

[32] Univ Genoa, Dipartimento Fis, I-16146 Genoa, Italy

[33] Ist Nazl Fis Nucl, I-16146 Genoa, Italy

[34] Harvard Univ, Cambridge, MA 02138 USA

[35] Heidelberg Univ, Inst Phys, D-69120 Heidelberg, Germany

[36] Univ London Imperial Coll Sci Technol & Med, London SW7 2AZ, England

[37] Univ Iowa, Iowa City, IA 52242 USA

[38] Iowa State Univ, Ames, IA 50011 USA

[39] Johns Hopkins Univ, Baltimore, MD 21218 USA

[40] Univ Karlsruhe, Inst Expt Kernphys, D-76021 Karlsruhe, Germany

[41] CNRS, IN2P3, Lab Accelerateur Lineaire, F-91898 Orsay, France

[42] Univ Paris 11, Ctr Sci Orsay, F-91898 Orsay, France

[43] Lawrence Livermore Natl Lab, Livermore, CA 94550 USA

[44] Univ Liverpool, Liverpool L69 7ZE, Merseyside, England

[45] Univ London, London E1 4NS, England

[46] Univ London, Royal Holloway & Bedford New Coll, Egham TW20 0EX, Surrey, England

[47] Univ Louisville, Louisville, KY 40292 USA

[48] Univ Manchester, Manchester M13 9PL, England

[49] Univ Maryland, College Pk, MD 20742 USA

[50] Univ Massachusetts, Amherst, MA 01003 USA

来源：

PHYSICAL REVIEW D | 2008年 / 77卷 / 11期

基金：

英国科学技术设施理事会;

关键词：

D O I：

10.1103/PhysRevD.77.111101

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We present measurements of the decays B+-> X(3872)K+ and B-0 -> X(3872)K-0 with X(3872) -> J/psi pi(+)pi(-). The data sample used, collected with the BABAR detector at the PEP-II e(+)e(-) asymmetric-energy storage ring, corresponds to 455x10(6)B (B) over bar pairs. Branching fraction measurements of B(B+-> X(3872)K+) x B(X(3872) -> J/psi pi(+)pi) = (8.4 +/- 1.5 +/- 0.7) x 10(-6) and B(B-0 -> X(3872)K-0) x B(X(3872) -> J/psi pi(+)pi) = (3.5 +/- 1.9 +/- 0.4) x 10(-6) are obtained. We set an upper limit on the natural width of the X(3872) of Gamma < 3.3 MeV/c(2) at the 90% confidence level.

引用

页数：7

共 17 条

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