Search for π0→νμ(ν)over-barμ decays in the LSND detector -: art. no. 091801

被引：15

作者：

Auerbach, LB ^{[1
]}

Burman, RL

Caldwell, DO

Church, ED

Cochran, AK

Donahue, JB

Fazely, AR

Garvey, GT

Gunasingha, RM

Imlay, RL

Kahrimanis, G

Louis, WC

Majkic, R

Malik, A

McIlhany, KL

Metcalf, WJ

Mills, GB

Rupnik, D

Sandberg, VD

Smith, D

Somodi, RF

Stancu, I

Strossman, WD

Sung, M

Tayloe, R

VanDalen, GJ

Vernon, W

Wadia, N

White, DH

Yellin, S

Yi, H

机构：

[1] Temple Univ, Philadelphia, PA 19122 USA

[2] Univ Calif Riverside, Riverside, CA 92521 USA

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

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

[5] Embry Riddle Aeronaut Univ, Prescott, AZ 86301 USA

[6] Los Alamos Natl Lab, Los Alamos, NM 87545 USA

[7] Louisiana State Univ, Baton Rouge, LA 70803 USA

[8] So Univ, Baton Rouge, LA 70813 USA

来源：

PHYSICAL REVIEW LETTERS | 2004年 / 92卷 / 09期

关键词：

D O I：

10.1103/PhysRevLett.92.091801

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We observe a net beam excess of 8.7+/-6.3(stat)+/-2.4(syst) events, above 160 MeV, resulting from the charged-current reaction of nu(mu) and/or (nu) over bar (mu) on C and H in the LSND detector. No beam-related muon background is expected in this energy regime. Within an analysis framework of pi(0)-->nu(mu)(nu) over bar (mu), we set a direct upper limit for this branching ratio of Gamma(pi(0)-->nu(mu)(nu) over bar (mu))/Gamma(pi(0)-->all)<1.6x10(-6) at 90% confidence level.

引用

页码：091801 / 1

页数：4

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