Search for massive neutrinos in the decay π → eν

被引：49

作者：

Aoki, M. ^{[1
]}

Blecher, M. ^{[2
]}

Bryman, D. A. ^{[3
]}

Chen, S. ^{[4
]}

Ding, M. ^{[4
]}

Doria, L. ^{[5
]}

Gumplinger, P. ^{[5
]}

Hurst, C. ^{[3
]}

Hussein, A. ^{[6
]}

Igarashi, Y. ^{[7
]}

Ito, N. ^{[1
]}

Kettell, S. H. ^{[8
]}

Kurchaninov, L. ^{[5
]}

Littenberg, L. ^{[8
]}

Malbrunot, C. ^{[3
]}

Numao, T. ^{[5
]}

Poutissou, R. ^{[5
]}

Sher, A. ^{[5
]}

Sullivan, T. ^{[3
]}

Vavilov, D. ^{[5
]}

Yamada, K. ^{[1
]}

Yoshida, M. ^{[1
]}

机构：

[1] Osaka Univ, Dept Phys, Osaka 5600043, Japan

[2] Virginia Tech, Blacksburg, VA 24061 USA

[3] Univ British Columbia, Dept Phys & Astron, Vancouver, BC V6T 1Z1, Canada

[4] Tsinghua Univ, Dept Engn Phys, Beijing 100084, Peoples R China

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

[6] Univ No British Columbia, Prince George, BC V2N 4Z9, Canada

[7] KEK, Tsukuba, Ibaraki 3050801, Japan

[8] Brookhaven Natl Lab, Upton, NY 11973 USA

来源：

PHYSICAL REVIEW D | 2011年 / 84卷 / 05期

基金：

美国国家科学基金会; 高等学校博士学科点专项科研基金;

关键词：

D O I：

10.1103/PhysRevD.84.052002

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Evidence of massive neutrinos in the pi(+) -> e(+)nu decay spectrum was sought with the background pi(+) -> mu(+) -> e(+) decay chain highly suppressed. Upper limits (90% C. L.) on the neutrino mixing matrix element vertical bar U-ei vertical bar(2) in the neutrino mass region 60-129 MeV/c(2) were set at the level of 10(-8).

引用

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