First measurement of the T-violating muon polarization in the decay K+ → μ+νγ

被引：9

作者：

Anisimovsky, VV

Khotjantsev, AN

Ivashkin, AP

Abe, M

Aliev, M

Aoki, M

Asano, Y

Blecher, M

Depommier, P

Hasinoff, M

Horie, K

Huang, HC

Igarashi, Y

Imazato, J

Khabibullin, MM

Kudenko, YG

Kuno, Y

Levchenko, AS

Lim, GY

Macdonald, JA

Mineev, OV

Okorokova, N

Rangacharyulu, C

Shimizu, S

Shin, YM

Yershov, NV

Yokoi, T

机构：

[1] Russian Acad Sci, Inst Nucl Res, Moscow 117312, Russia

[2] Univ Tsukuba, Inst Appl Phys, Tsukuba, Ibaraki 3050006, Japan

[3] Osaka Univ, Osaka 5600043, Japan

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

[5] Univ Montreal, Montreal, PQ H3C 3J7, Canada

[6] Univ British Columbia, Vancouver, BC V6T 2A3, Canada

[7] Natl Energy Accelerator Res Org, KEK, Tsukuba, Ibaraki 3050801, Japan

[8] Natl Taiwan Univ, Dept Phys, Taipei 106, Taiwan

[9] TRIUMF, Vancouver, BC V6T 2A3, Canada

[10] Univ Saskatchewan, Saskatoon, SK S7N 5E2, Canada

来源：

PHYSICS LETTERS B | 2003年 / 562卷 / 3-4期

基金：

美国国家科学基金会; 俄罗斯基础研究基金会; 加拿大自然科学与工程研究理事会; 日本学术振兴会;

关键词：

kaon decays; muon polarization; T-violation;

D O I：

10.1016/S0370-2693(03)00576-8

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We present the result of the first measurement of the T-violating transverse muon polarization P-T in the decay K+ --> mu(+)vgamma. This polarization is sensitive to new sources of CP-violation in the Higgs sector. Using data accumulated in the period 19961998 we have obtained P-T = (-0.64 +/- 1.85(stat) +/- 0.10(syst)) x 10(-2) which is consistent with no T-violation in this decay. (C) 2003 Elsevier Science B.V. All rights reserved.

引用

页码：166 / 172

页数：7

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