Search for the lepton flavor violation processes J/ψ→μτ and eτ

被引：31

作者：

Ablikim, M ^{[1
]}

Bai, JZ

Ban, Y

Bian, JG

Cai, X

Chang, JF

Chen, HF

Chen, HS

Chen, HX

Chen, JC

Chen, J

Chen, ML

Chen, YB

Chi, SP

Chu, YP

Cui, XZ

Dai, HL

Dai, YS

Deng, ZY

Dong, LY

Du, SX

Du, ZZ

Fang, J

Fang, SS

Fu, CD

Fu, HY

Gao, CS

Gao, YN

Gong, MY

Gong, WX

Gu, SD

Guo, YN

Guo, YQ

Guo, ZJ

Harris, FA

He, KL

He, M

He, X

Heng, YK

Hu, HM

Hu, T

Huang, GS

Huang, L

Huang, XP

Ji, XB

Jia, QY

Jiang, CH

Jiang, XS

Jin, DP

机构：

[1] Inst High Energy Phys, Beijing 100039, Peoples R China

[2] CCAST, Beijing 100080, Peoples R China

[3] Guangxi Normal Univ, Guildford 541004, Surrey, England

[4] Henan Normal Univ, Xining 453002, Peoples R China

[5] Henan Normal Univ, Xining 453002, Peoples R China

[6] Huazhong Normal Univ, Wuhan 430079, Peoples R China

[7] Hunan Univ, Changsha 410082, Peoples R China

[8] Liaoning Univ, Shenyang 110036, Peoples R China

[9] Nanjing Normal Univ, Nanjing 210097, Peoples R China

[10] Nankai Univ, Tianjin 300071, Peoples R China

[11] Peking Univ, Beijing 100871, Peoples R China

[12] Shandong Univ, Jinan 250100, Peoples R China

[13] Shanghai Jiao Tong Univ, Shanghai 200030, Peoples R China

[14] Sichuan Univ, Chengdu 610064, Peoples R China

[15] Tsinghua Univ, Beijing 100084, Peoples R China

[16] Univ Hawaii, Honolulu, HI 96822 USA

[17] Univ Sci & Technol China, Anhua 230026, Peoples R China

[18] Wuhan Univ, Wuhan 430072, Peoples R China

[19] Zhejiang Univ, Hangzhou 310028, Peoples R China

来源：

PHYSICS LETTERS B | 2004年 / 598卷 / 3-4期

关键词：

D O I：

10.1016/j.physletb.2004.08.005

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The lepton flavor violation processes J/psi --> mutau and etau are searched for using a sample of 5.8 x 10(7) J/psi events collected with the BESII detector. Zero and one candidate events, consistent with the estimated background, are observed in J/psi --> mutau,tau --> enu(e)nu(tau) and J/psi --> etau, tau --> munu(mu)nu(tau) decays, respectively. Upper limits on the branching ratios are determined to be Br(J/psi --> mutau) < 2.0 x 10(-6) and Br(J/psi --> etau) < 8.3 x 10(-6) at the 90% confidence level (C.L.). (C) 2004 Elsevier B.V. All rights reserved.

引用

页码：172 / 177

页数：6

共 20 条

[11] Evidence for oscillation of atmospheric neutrinos [J].

Fukuda, Y ;

Hayakawa, T ;

Ichihara, E ;

Inoue, K ;

Ishihara, K ;

Ishino, H ;

Itow, Y ;

Kajita, T ;

Kameda, J ;

Kasuga, S ;

Kobayashi, K ;

Kobayashi, Y ;

Koshio, Y ;

Miura, M ;

Nakahata, M ;

Nakayama, S ;

Okada, A ;

Okumura, K ;

Sakurai, N ;

Shiozawa, M ;

Suzuki, Y ;

Takeuchi, Y ;

Totsuka, Y ;

Yamada, S ;

Earl, M ;

Habig, A ;

Kearns, E ;

Messier, MD ;

Scholberg, K ;

Stone, JL ;

Sulak, LR ;

Walter, CW ;

Goldhaber, M ;

Barszczxak, T ;

Casper, D ;

Gajewski, W ;

Halverson, PG ;

Hsu, J ;

Kropp, WR ;

Price, LR ;

Reines, F ;

Smy, M ;

Sobel, HW ;

Vagins, MR ;

Ganezer, KS ;

Keig, WE ;

Ellsworth, RW ;

Tasaka, S ;

Flanagan, JW ;

Kibayashi, A .

PHYSICAL REVIEW LETTERS, 1998, 81 (08) :1562-1567

[12] THE SEARCH FOR SUPERSYMMETRY - PROBING PHYSICS BEYOND THE STANDARD MODEL [J].

HABER, HE ;

KANE, GL .

PHYSICS REPORTS-REVIEW SECTION OF PHYSICS LETTERS, 1985, 117 (2-4) :75-263

[13]

HILL C, HEPPH0203079

[14] The signal estimator limit setting method [J].

Jin, S ;

McNamara, P .

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, 2001, 462 (03) :561-567

[15] Muon decay and physics beyond the standard model [J].

Kuno, Y ;

Okada, Y .

REVIEWS OF MODERN PHYSICS, 2001, 73 (01) :151-202

[16] LEFT-RIGHT GAUGE SYMMETRY AND AN ISOCONJUGATE MODEL OF CP VIOLATION [J].

MOHAPATRA, RN ;

PATI, JC .

PHYSICAL REVIEW D, 1975, 11 (03) :566-571

[17] Constraints on two-body lepton flavor violating decay processes [J].

Nussinov, S ;

Peccei, RD ;

Zhang, XM .

PHYSICAL REVIEW D, 2001, 63 (01)

[18] LEPTON NUMBER AS FOURTH COLOR [J].

PATI, JC ;

SALAM, A .

PHYSICAL REVIEW D, 1974, 10 (01) :275-289

[19]

Zhang XM, 2001, HIGH ENERG PHYS NUC, V25, P461

[20]

ZHANG XM, HEPPH0010105

← 1 2 →