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Limits on neutrino oscillations from (nu)over-bar(e) appearance

Freedman, S. J. and Fujikawa, B. K. and Napolitano, J. and Nelson, J. E. and McKeown, R. D. and Lesko, K. T. and Donahue, J. B. and Garvey, G. T. and Sandberg, V. D. and Choi, W. C. and Fazely, A. and Imlay, R. L. and Metcalf, W. J. and Durkin, L. S. and Harper, R. W. and Ling, T. Y. and Mitchell, J. W. and Romanowski, T. A. and Smith, E. S. and Timko, M. (1993) Limits on neutrino oscillations from (nu)over-bar(e) appearance. Physical Review D, 47 (3). pp. 811-829. ISSN 0556-2821. http://resolver.caltech.edu/CaltechAUTHORS:FREprd93

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Abstract

A 20-ton neutrino detector located near the Los Alamos Meson Physics Facility beam stop is used to search for v(e)BAR generated via neutrino oscillations from any of the three neutrino types, v(mu), v(mu)BAR, and v(e), which radiate from the beam stop. The analysis of three years of data provides limits on the oscillation modes v(mu)BAR --> v(e)BAR, v(e) --> v(e)BAR, and v(mu) --> v(e)BAR, and the lepton-number-violating decay process mu+ --> e+ + v(e)BAR + v(mu). The 90%-confidence-level limits for v(mu)BAR --> v(e)BAR oscillations are deltam2 less-than-or-equal-to 0.14 eV2 for maximal mixing, and sin(2)2theta less-than-or-equal-to 0.024 for large deltam2.


Item Type:Article
Additional Information:©1993 The American Physical Society. Received 22 July 1992. We are grateful for the technical assistance of M. A. Anderson, C. Rush, V. J. Sehgal, and J. Heimaster (OSU); W. Marterer and J. Ui (LSU); J. Dawson and W. Haberichter (ANL); S. Cushing, J. Eddleman, B. Rector, G. Suazo, and N. Thompson (LAMPF). We also acknowledge useful conversations with R. Burman, D. Krakauer, K. Kubodera, and K. Kohyama. This work was supported in part by the Director, Office of Energy Research, Office of High Energy and Nuclear Physics, Divisions of High Energy Physics and Nuclear Physics of the U.S. Department of Energy under contract Nos. DEAC03-76SF00098, W-31-109-Eng-38, W7405-Eng-36, and DE-AS05-77ER05490 and by National Science Foundation Grant No. PHY88-17926. One of us (B.K.F.) acknowledges NSF support while a student at Caltech.
Subject Keywords:LOW-ENERGY; CROSS-SECTION; NU-MU; SEARCH; DETECTOR; REACTOR; MASS; BEAM; NU-BAR-MU->NU-BAR-E; NU-MU->NU-E
Record Number:CaltechAUTHORS:FREprd93
Persistent URL:http://resolver.caltech.edu/CaltechAUTHORS:FREprd93
Alternative URL:http://dx.doi.org/10.1103/PhysRevD.47.811
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:7241
Collection:CaltechAUTHORS
Deposited By: Tony Diaz
Deposited On:25 Jan 2007
Last Modified:26 Dec 2012 09:30

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