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

被引：14
|
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
收藏
页码：091801 / 1
页数：4
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