Charged track multiplicity in B meson decay -: art. no. 072002

被引：10

作者：

Brandenburg, G ^{[1
]}

Ershov, A

Gao, YS

Kim, DYJ

Wilson, R

Browder, TE

Li, Y

Rodriguez, JL

Yamamoto, H

Bergfeld, T

Eisenstein, BI

Ernst, J

Gladding, GE

Gollin, GD

Hans, RM

Johnson, E

Karliner, I

Marsh, MA

Palmer, M

Plager, C

Sedlack, C

Selen, M

Thaler, JJ

Williams, J

Edwards, KW

Janicek, R

Patel, PM

Sadoff, AJ

Ammar, R

Baringer, P

Bean, A

Besson, D

Davis, R

Kotov, S

Kravchenko, I

Kwak, N

Zhao, X

Anderson, S

Frolov, VV

Kubota, Y

Lee, SJ

Mahapatra, R

O'Neill, JJ

Poling, R

Riehle, T

Smith, A

Ahmed, S

Alam, MS

Athar, SB

Jian, L

机构：

[1] Harvard Univ, Cambridge, MA 02138 USA

[2] Univ Hawaii Manoa, Honolulu, HI 96822 USA

[3] Univ Illinois, Urbana, IL 61801 USA

[4] Carleton Univ, Ottawa, ON K1S 5B6, Canada

[5] Inst Particle Phys, Montreal, PQ, Canada

[6] McGill Univ, Montreal, PQ H3A 2T8, Canada

[7] Ithaca Coll, Ithaca, NY 14850 USA

[8] Univ Kansas, Lawrence, KS 66045 USA

[9] Univ Minnesota, Minneapolis, MN 55455 USA

[10] SUNY Albany, Albany, NY 12222 USA

[11] Ohio State Univ, Columbus, OH 43210 USA

[12] Univ Oklahoma, Norman, OK 73019 USA

[13] Purdue Univ, W Lafayette, IN 47907 USA

[14] Univ Rochester, Rochester, NY 14627 USA

[15] Stanford Univ, Stanford Linear Accelerator Ctr, Stanford, CA 94309 USA

[16] So Methodist Univ, Dallas, TX 75275 USA

[17] Syracuse Univ, Syracuse, NY 13244 USA

[18] Vanderbilt Univ, Nashville, TN 37235 USA

[19] Virginia Polytech Inst & State Univ, Blacksburg, VA 24061 USA

[20] Wayne State Univ, Detroit, MI 48202 USA

[21] CALTECH, Pasadena, CA 91125 USA

[22] Univ Calif San Diego, La Jolla, CA 92093 USA

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

[24] Carnegie Mellon Univ, Pittsburgh, PA 15213 USA

[25] Univ Colorado, Boulder, CO 80309 USA

[26] Cornell Univ, Ithaca, NY 14853 USA

[27] Univ Florida, Gainesville, FL 32611 USA

[28] Univ Texas Pan Amer, Edinburgh, TX 78539 USA

[29] Yonsei Univ, Seoul 120749, South Korea

[30] Univ Cincinnati, Cincinnati, OH 45221 USA

来源：

PHYSICAL REVIEW D | 2000年 / 61卷 / 07期

关键词：

D O I：

10.1103/PhysRevD.61.072002

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We have used the CLEO Pi detector to study the multiplicity of charged particles in the decays of B mesons produced at the Y(4S) resonance. Using a sample of 1.5x10(6) B meson pairs, we find the mean inclusive charged particle multiplicity to be 10.71+/-0.02(-0.15)(+0.21) for the decay of the pair. This corresponds to a mean multiplicity of 5.36+/-0.01(-0.08)(+0.11) for a single B meson. Using the same data sample, we have also extracted the mean multiplicities in semileptonic and nonleptonic decays. We measure a mean of 7.82+/-0.05(-0.19)(+0.21) charged particles per BE decay when both mesons decay semileptonically. When neither B mason decays semileptonically, we measure a mean charged particle multiplicity of 11.62+/-0.04(-0.18)(+0.24) per B (B) over bar pair.

引用

页数：6

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