Search for the electric dipole moment of the τ lepton

被引：118

作者：

Inami, K ^{[1
]}

Abe, K

Abe, R

Abe, T

Adachi, I

Aihara, H

Akatsu, M

Asano, Y

Aso, T

Aulchenko, V

Aushev, T

Bakich, AM

Ban, Y

Banas, E

Behera, PK

Bizjak, I

Bondar, A

Browder, TE

Chang, P

Chao, Y

Cheon, BG

Chistov, R

Choi, Y

Choi, YK

Dong, LY

Eidelman, S

Eiges, V

Enari, Y

Fukunaga, C

Gabyshev, N

Garmash, A

Gershon, T

Golob, B

Hagner, C

Handa, F

Hara, T

Hayashii, H

Hazumi, M

Higuchi, I

Higuchi, T

Hokuue, T

Hoshi, Y

Hou, WS

Huang, HC

Igaki, T

Iijima, T

Ishikawa, A

Ishino, H

Itoh, R

机构：

[1] Nagoya Univ, Nagoya, Aichi, Japan

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

[3] Chiba Univ, Chiba, Japan

[4] Chuo Univ, Tokyo 112, Japan

[5] Univ Cincinnati, Cincinnati, OH USA

[6] Univ Frankfurt, D-6000 Frankfurt, Germany

[7] Univ Hawaii, Honolulu, HI 96822 USA

[8] High Energy Accelerator Res Org KEK, Tsukuba, Ibaraki, Japan

[9] Hiroshima Inst Technol, Hiroshima, Japan

[10] Chinese Acad Sci, Inst High Energy Phys, Beijing, Peoples R China

[11] Inst High Energy Phys, Vienna, Austria

[12] Inst Theoret & Expt Phys, Moscow, Russia

[13] Jozef Stefan Inst, Ljubljana, Slovenia

[14] Kanagawa Univ, Yokohama, Kanagawa, Japan

[15] Korea Univ, Seoul 136701, South Korea

[16] Kyoto Univ, Kyoto, Japan

[17] Kyungpook Natl Univ, Taegu 702701, South Korea

[18] Univ Lausanne, Inst Phys Hautes Energies, Lausanne, Switzerland

[19] Univ Ljubljana, Ljubljana, Slovenia

[20] Univ Maribor, SLO-2000 Maribor, Slovenia

[21] Univ Melbourne, Melbourne, Vic, Australia

[22] Nara Womens Univ, Nara 630, Japan

[23] Natl Taiwan Univ, Taipei 10764, Taiwan

[24] H Niewodniczanski Inst Nucl Phys, PL-31342 Krakow, Poland

[25] Nihon Dent Coll, Niigata, Japan

[26] Niigata Univ, Niigata, Japan

[27] Osaka City Univ, Osaka 558, Japan

[28] Osaka Univ, Osaka, Japan

[29] Panjab Univ, Chandigarh 160014, India

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

[31] RIKEN, BNL Res Ctr, Brookhaven, NY USA

[32] Univ Sci & Technol China, Hefei 230026, Peoples R China

[33] Seoul Natl Univ, Seoul, South Korea

[34] Sungkyunkwan Univ, Suwon 440746, South Korea

[35] Univ Sydney, Sydney, NSW 2006, Australia

[36] Toho Univ, Funabashi, Chiba 274, Japan

[37] Tohoku Gakuin Univ, Tagajo, Miyagi 985, Japan

[38] Tohoku Univ, Sendai, Miyagi 980, Japan

[39] Univ Tokyo, Tokyo, Japan

[40] Tokyo Inst Technol, Tokyo 152, Japan

[41] Tokyo Metropolitan Univ, Tokyo 158, Japan

[42] Toyama Natl Coll Maritime Technol, Toyama, Japan

[43] Univ Tsukuba, Tsukuba, Ibaraki 305, Japan

[44] Utkal Univ, Bhubaneswar 751004, Orissa, India

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

[46] Yokkaichi Univ, Yokaichi, Japan

[47] Yonsei Univ, Seoul 120749, South Korea

来源：

PHYSICS LETTERS B | 2003年 / 551卷 / 1-2期

关键词：

Tau; electric dipole moment; CP violation; optimal observable;

D O I：

10.1016/S0370-2693(02)02984-2

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We have searched for a CP violation signature arising from an electric dipole moment (d(tau)) of the tau lepton in the e(+)e(-) --> tau(+)tau(-) reaction. Using an optimal observable method and 29.5 fb(-1) of data collected with the Belle detector at the KEKB collider at roots- = 10.58 GeV, we find Re(d(tau)) = (1.15 +/- 1.70) x 10(-17) e cm and Im(d(tau)) = (-0.83+/-0.86) < 0.8 x 10(-17) e cm and set the 95% confidence level limits -2.2 x 10(-17) < Re(dT) < 4.5 x 10(-17) e cm and -2.5 x 10(-17) < Im(dr) < 0.8 x 10(-17) e cm. (C) 2002 Elsevier Science B.V. All rights reserved.

引用

页码：16 / 26

页数：11

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