Results on {nu}{sub {mu}}{r_arrow}{nu}{sub e} oscillations from pion decay in flight neutrinos

Journal Article · Thu Oct 01 04:00:00 EDT 1998 · Physical Review, C

OSTI ID:664886

Church, E D; McIlhany, K; Stancu, I; Strossman, W; VanDalen, G J ^[1]; Vernon, W ^[2]; Caldwell, D O; Yellin, S ^[3]; Smith, D; Waltz, J ^[4]; Cohen, I ^[5]; Burman, R L; Donahue, J B; Federspiel, F J; Garvey, G T; Louis, W C; Mills, G B; Sandberg, V; Tayloe, R; White, D H ^[6] ; Gunasingha, R M; Imlay, R; Kim, H J; Metcalf, W; Wadia, N ^[7]; Johnston, K ^[8]; Reeder, R A ^[9]; Fazely, A ^[10]; Athanassopoulos, C; Auerbach, L B; Majkic, R; Works, D; Xiao, Y ^[11]

---

1. University of California, Riverside, California 92521 (United States)
2. University of California, San Diego, California 92093 (United States)
3. University of California, Santa Barbara, California 93106 (United States)
4. Embry Riddle Aeronautical University, Prescott, Arizona 86301 (United States)
5. Linfield College, McMinnville, Oregon 97128 (United States)
6. Los Alamos National Laboratory, Los Alamos, New Mexico 87545 (United States)
7. Louisiana State University, Baton Rouge, Louisiana 70803 (United States)
8. Louisiana Tech University, Ruston, Louisiana 71272 (United States)
9. University of New Mexico, Albuquerque, New Mexico 87131 (United States)
10. Southern University, Baton Rouge, Louisiana 70813 (United States)
11. Temple University, Philadelphia, Pennsylvania 19122 (United States)

A search for {nu}{sub {mu}}{r_arrow}{nu}{sub e} oscillations has been conducted at the Los Alamos Meson Physics Facility using {nu}{sub {mu}} from {pi}{sup +} decay in flight. An excess in the number of beam-related events from the {nu}{sub e}C{r_arrow}e{sup {minus}}X inclusive reaction is observed. The excess is too large to be explained by normal {nu}{sub e} contamination in the beam at a confidence level greater than 99{percent}. If interpreted as an oscillation signal, the observed oscillation probability of (2.6{plus_minus}1.0{plus_minus}0.5){times}10{sup {minus}3} is consistent with the previously reported {bar {nu}}{sub {mu}}{r_arrow}{bar {nu}}{sub e} oscillation evidence from LSND. {copyright} {ital 1998} {ital The American Physical Society}

• OSTI ID: 664886
• Journal Information: Physical Review, C, Journal Name: Physical Review, C Journal Issue: 4 Vol. 58; ISSN 0556-2813; ISSN PRVCAN
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
ELECTRON NEUTRINOS
MUON NEUTRINOS
NEUTRINO OSCILLATION
PARTICLE DECAY
PIONS PLUS