Upper limits for neutrino oscillations (ν)over-barμ→(ν)over-bare from muon decay at rest -: art. no. 112001

被引：341
|
作者：
Armbruster, B
Blair, IM
Bodmann, BA
Booth, NE
Drexlin, G
Edgington, JA
Eichner, C
Eitel, K
Finckh, E
Gemmeke, H
Hössl, J
Jannakos, T
Jünger, P
Kleifges, M
Kleinfeller, J
Kretschmer, W
Maschuw, R
Oehler, C
Plischke, P
Reichenbacher, J
Ruf, C
Steidl, M
Wolf, J
Zeitnitz, B
机构：
[1] Forschungszentrum Karlsruhe, Inst Kernphys, D-76021 Karlsruhe, Germany
[2] Queen Mary Univ London, Dept Phys, London E1 4NS, England
[3] Univ Erlangen Nurnberg, Inst Phys, D-91058 Erlangen, Germany
[4] Univ Oxford, Dept Phys, Oxford OX1 3RH, England
[5] Univ Bonn, Inst Strahlen & Kernphys, D-53115 Bonn, Germany
[6] Forschungszentrum Karlsruhe, Inst Prozessdatenverarbeitung & Elekt, D-76021 Karlsruhe, Germany
[7] Univ Karlsruhe, Inst Expt Kernphys, D-76128 Karlsruhe, Germany
来源：
PHYSICAL REVIEW D | 2002年 / 65卷 / 11期
关键词：
D O I：
10.1103/PhysRevD.65.112001
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
The KARMEN experiment at the spallation neutron source ISIS used (nu) over bar (mu) from mu(+) decay at rest for the search of neutrino oscillations (nu) over bar (mu)-->(nu) over bar (e) in the appearance mode, with p((nu) over bar (e),e(+))n as a detection reaction of (nu) over bar (e). In total, 15 candidates satisfy all conditions for the (nu) over bar (e) signature, in agreement with the background expectation of 15.8+/-0.5 events, yielding no indication for oscillations. A single event based likelihood analysis leads to upper limits on the oscillation parameters sin(2)(2Theta)<1.7x10(-3) for Delta m(2)>= 100 eV(2) and Delta m(2<)0.055 eV(2) for sin(2)(2Theta)=1 at 90% confidence. Thus, KARMEN does not confirm the LSND experiment and restricts significantly its favored parameter region for (nu) over bar (mu)-->(nu) over bar (e).
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页数：16
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