Measurement of the pseudoscalar decay constant fDs using charm-tagged events in e+e- collisions at √s=10.58.GeV

被引：36
作者：
Aubert, B. [1 ]
Barate, R.
Bona, M.
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.
Brown, D. N.
Button-Shafer, J.
Cahn, R. N.
Charles, E.
Day, C. T.
Gill, M. S.
Groysman, Y.
Jacobsen, R. G.
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.
Morgan, S. E.
Watson, A. T.
机构：
[1] Inst Particle Phys, F-74941 Annecy Le Vieux, France
[2] Univ Barcelona, Fac Fis, Dept ECM, E-08028 Barcelona, Spain
[3] Univ Bari, Dipartmento Fis, I-70126 Bari, Italy
[4] Univ Bari, 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, Berkeley, CA 94720 USA
[8] Lawrence Berkeley Natl Lab, 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, La Jolla, 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] Univ Dortmund, Inst Phys, D-44221 Dortmund, Germany
[26] Tech Univ Dresden, Inst Kern & Teilchenphys, D-01062 Dresden, Germany
[27] Ecole Polytech, LLT, F-91128 Palaiseau, France
[28] Univ Edinburgh, Edinburgh EH9 3JZ, Midlothian, Scotland
[29] Univ Ferrara, Dipartimento Fis, I-44100 Ferrara, Italy
[30] Univ Ferrara, 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] Univ Genoa, 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] Imperial Coll London, 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 Sud 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] Queen Mary 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, Lancs, England
[49] Univ Maryland, College Pk, MD 20742 USA
[50] Univ Massachusetts, Amherst, MA 01003 USA
来源：
PHYSICAL REVIEW LETTERS | 2007年 / 98卷 / 14期
基金：
英国科学技术设施理事会;
关键词：
8;
D O I：
10.1103/PhysRevLett.98.141801
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
Using 230.2 fb(-1) of e(+)e(-) annihilation data collected with the BABAR detector at and near the peak of the Upsilon(4S) resonance, 489 +/- 55 events containing the pure leptonic decay D-s(+)->mu(+)nu(mu) have been isolated in charm-tagged events. The ratio of partial widths Gamma(D-s(+)->mu(+)nu(mu))/Gamma(D-s(+)->phi pi(+)) is measured to be 0.143 +/- 0.018 +/- 0.006 allowing a determination of the pseudoscalar decay constant f(Ds)=(283 +/- 17 +/- 7 +/- 14) MeV. The errors are statistical, systematic, and from the D-s(+)->phi pi(+) branching ratio, respectively.
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页数：7
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