CANDIDATE EVENTS IN A SEARCH FOR (NU)OVER-BAR(MU)-](NU)OVER-BAR(E) OSCILLATIONS

被引：514

作者：

ATHANASSOPOULOS, C

AUERBACH, LB

BAUER, DA

BOLTON, RD

BOYD, B

BURMAN, RL

CALDWELL, DO

COHEN, I

DIETERLE, BD

DONAHUE, JB

EISNER, AM

FAZELY, A

FEDERSPIEL, FJ

GARVEY, GT

GRAY, M

GUNASINGHA, RM

HIGHLAND, V

IMLAY, R

JOHNSTON, K

LOUIS, WC

LU, A

MARGULIES, J

MCILHANY, K

METCALF, W

REEDER, RA

SANDBERG, V

SCHILLACI, M

SMITH, D

STANCU, I

STROSSMAN, W

SULLIVAN, MK

VANDALEN, GJ

VERNON, W

WANG, YX

WHITE, DH

WHITEHOUSE, D

WORKS, D

XIAO, Y

YELLIN, S

机构：

[1] UNIV CALIF RIVERSIDE,RIVERSIDE,CA 92501

[2] UNIV CALIF SAN DIEGO,SAN DIEGO,CA 92093

[3] UNIV CALIF SANTA BARBARA,SANTA BARBARA,CA 93106

[4] UNIV CALIF INTERCAMPUS INST RES PARTICLE ACCELERA,STANFORD,CA 94309

[5] EMBRY RIDDLE AERONAUT UNIV,PRESCOTT,AZ 86301

[6] LINFIELD COLL,MCMINNVILLE,OR 97128

[7] LOS ALAMOS NATL LAB,LOS ALAMOS,NM 87545

[8] LOUISIANA STATE UNIV,BATON ROUGE,LA 70803

[9] LOUISIANA TECH UNIV,RUSTON,LA 71272

[10] UNIV NEW MEXICO,ALBUQUERQUE,NM 87131

[11] SO UNIV BATON ROUGE,BATON ROUGE,LA 70813

来源：

PHYSICAL REVIEW LETTERS | 1995年 / 75卷 / 14期

关键词：

D O I：

10.1103/PhysRevLett.75.2650

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

A search for <(nu)over bar>(e)'s in excess of the number expected from conventional sources has been made using the Liquid Scintillator Neutrino Detector, located 30 m behind the Los Alamos Meson Physics Facility beam stop. The <(nu)over bar>(e) are detected via <(nu)over bar>(e) p --> e(+) n with e(+) energy between 36 and 60 MeV, followed by a gamma ray from np --> d gamma (2.2 MeV). Using strict cuts to identify gamma rays correlated with e(+) yields 9 events with only 2.1 +/- 0.3 background expected. A likelihood fit to the entire e(+) sample results in a total excess of 16.4(-8.9)(+9.7) +/- 3.3 events. If attributed to <(nu)over bar>(mu) --> <(nu)over bar>(e) oscillations, this corresponds to an oscillation probability of (0.34(-0.18)(+0.20) +/- 0.07)%.

引用

页码：2650 / 2653

页数：4

共 12 条

[1] SEARCH FOR NEUTRINO OSCILLATIONS AT 15, 40 AND 95 METERS FROM A NUCLEAR-POWER-REACTOR AT BUGEY [J].

ACHKAR, B ;

ALEKSAN, R ;

AVENIER, M ;

BAGIEU, G ;

BOUCHEZ, J ;

BRISSOT, R ;

CAVAIGNAC, JF ;

COLLOT, J ;

COUSINOU, MC ;

CUSSONNEAU, JP ;

DECLAIS, Y ;

DUFOUR, Y ;

FAVIER, J ;

GARCIAZ, F ;

KAJFASZ, E ;

DEKERRET, H ;

KOANG, DH ;

LEFIEVRE, B ;

LESQUOY, E ;

MALLET, J ;

METREF, A ;

NAGY, E ;

PESSARD, H ;

PIERRE, F ;

OBOLENSKY, M ;

STUTZ, A ;

WUTHRICK, JP .

NUCLEAR PHYSICS B, 1995, 434 (03) :503-532

[2] MEASUREMENT OF THE REACTION C-12(NU(MU),MU(-))X NEAR-THRESHOLD [J].

ALBERT, M ;

ATHANASSOPOULOS, C ;

AUERBACH, LB ;

BAUER, D ;

BOLTON, R ;

BOYD, B ;

BURMAN, RL ;

COHEN, I ;

CALDWELL, DO ;

DIETERLE, BD ;

DONAHUE, JB ;

EISNER, AM ;

FAZELY, A ;

FEDERSPIEL, FJ ;

GARVEY, GT ;

GUNASINGHA, RM ;

HIGHLAND, V ;

HILL, J ;

IMLAY, R ;

JOHNSTON, K ;

LOUIS, WC ;

LU, A ;

MANN, AK ;

MARGULIES, J ;

MCILHANY, K ;

METCALF, W ;

REEDER, RA ;

SANDBERG, V ;

SCHILLACI, M ;

SMITH, D ;

STANCU, I ;

STROSSMAN, W ;

SULLIVAN, MK ;

VANDALEN, GJ ;

VERNON, W ;

WANG, YX ;

WHITE, DH ;

WHITEHOUSE, D ;

WORKS, D ;

XIAO, Y ;

YELLIN, S .

PHYSICAL REVIEW C, 1995, 51 (03) :R1065-R1069

[3] A MEASUREMENT OF THE NEUTRINO FLUX FROM A STOPPED-PION SOURCE [J].

ALLEN, RC ;

CHEN, HH ;

POTTER, ME ;

BURMAN, RL ;

DONAHUE, JB ;

KRAKAUER, DA ;

TALAGA, RL ;

SMITH, ES ;

DODD, AC .

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, 1989, 284 (2-3) :347-355

[4]

Armbruster B., 1995, Nuclear Physics B, Proceedings Supplements, V38, P235, DOI 10.1016/0920-5632(94)00752-H

[5] SEARCH FOR MUON-NEUTRINO OSCILLATIONS NU-MU-]NU-E (NU-BAR-MU-]NU-BAR-E) IN A WIDE-BAND NEUTRINO BEAM [J].

BORODOVSKY, L ;

CHI, CY ;

HO, Y ;

KONDAKIS, N ;

LEE, W ;

MECHALAKOS, J ;

RUBIN, B ;

SETO, R ;

STOUGHTON, C ;

TZANAKOS, G ;

BLUMENFELD, B ;

CHICHURA, L ;

KRIZMANIC, J ;

LINCKE, E ;

LUEKING, L ;

LYLE, W ;

PEVSNER, A ;

HOGAN, WP ;

OBRIEN, E ;

REARDON, K ;

SHELDON, PD ;

SULLIVAN, GW .

PHYSICAL REVIEW LETTERS, 1992, 68 (03) :274-277

[6] MONTE-CARLO SIMULATION OF NEUTRINO PRODUCTION BY MEDIUM-ENERGY PROTONS IN A BEAM STOP [J].

BURMAN, RL ;

POTTER, ME ;

SMITH, ES .

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, 1990, 291 (03) :621-633

[7] KARMEN - PRECISION TESTS OF THE STANDARD MODEL WITH NEUTRINOS FROM MUON AND PION DECAY [J].

DREXLIN, G ;

ARMBRUSTER, B ;

EBERHARD, V ;

EICHNER, C ;

EITEL, K ;

GEMMEKE, H ;

GRANDEGGER, W ;

HUNKEL, D ;

JANNAKOS, T ;

KLEIFGES, M ;

KLEINFELLER, J ;

PLISCHKE, P ;

RAPP, J ;

WEBER, J ;

WOCHELE, J ;

WOLF, J ;

WOLFE, S ;

ZEITNITZ, B ;

BODMANN, B ;

FERSTL, M ;

FINCKH, E ;

HANIKA, T ;

HEHLE, M ;

HOSSL, J ;

KRETSCHMER, W ;

SCHMIDT, H ;

STUMM, O ;

MASCHUW, R ;

EDGINGTON, JA ;

SECLIGMANN, B ;

DODD, AC ;

BOOTH, NE .

PROGRESS IN PARTICLE AND NUCLEAR PHYSICS, VOL 32: NEUTRINOS IN COSMOLOGY, ASTRO, PARTICLE AND NUCLEAR PHYSICS, 1994, 32 :375-396

[8]

HILL J, 1995, THESIS U PENNSYLVANI

[9] AN ALTERNATIVE ANALYSIS OF THE LSND NEUTRINO OSCILLATION SEARCH DATA ON (NU)OVER-BAR(MU)-](NU)OVER-BAR(E) [J].

HILL, JE .

PHYSICAL REVIEW LETTERS, 1995, 75 (14) :2654-2657

[10]

MCILHANY K, 1994, IN PRESS APR P C COM

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