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).

引用

页数：16

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