Search for B{r_arrow}{mu}{bar {nu}}{sub {mu}}{gamma} and B{r_arrow}e{bar {nu}}{sub e}{gamma}

Journal Article · Mon Jun 30 20:00:00 EDT 1997 · Physical Review, D

DOI:https://doi.org/10.1103/PhysRevD.56.11· OSTI ID:628690

Browder, T E; Li, F; Li, Y; Rodriguez, J L ^[1]; Bergfeld, T; Eisenstein, B I; Ernst, J; Gladding, G E; Gollin, G D; Johnson, E; Karliner, I; Palmer, M; Selen, M; Thaler, J J ^[2]; Edwards, K W ^[3]; Bellerive, A; Britton, D I; Janicek, R; MacFarlane, D B; McLean, K W ; Patel, P M ^[4]; Sadoff, A J ^[5]; Ammar, R; Baringer, P; Bean, A; Besson, D; Coppage, D; Darling, C; Davis, R; Hancock, N; Kotov, S; Kravchenko, I; Kwak, N ^[6]; Anderson, S; Kubota, Y; Lattery, M; ONeill, J J; Patton, S; Poling, R; Riehle, T; Smith, A; Savinov, V ^[7]; Alam, M S; Athar, S B; Ling, Z; Mahmood, A H; Severini, H; Timm, S; Wappler, F ^[8]; Anastassov, A; Blinov, S; Duboscq, J E; Fulton, R; Fujino, D; Gan, K K; Hart, T; Honscheid, K; Kagan, H; Kass, R; Lee, J; Sung, M; Undrus, A; Wanke, R; Wolf, A; Zoeller, M M ^[9]; Nemati, B; Richichi, S J; Ross, W R; Skubic, P; Wood, M ^[10]; Bishai, M; Fast, J; Gerndt, E; Hinson, J W; Miller, D H; Shibata, E I; Shipsey, I P; Yurko, M ^[11]; Gibbons, L; Johnson, S D; Kwon, Y; Roberts, S; Thorndike, E H ^[12]; Jessop, C P; Lingel, K; Marsiske, H; Perl, M L; Schaffner, S F; Ugolini, D; Wang, R; Zhou, X; others, and

---

1. University of Hawaii at Manoa, Honolulu, Hawaii 96822 (United States)
2. University of Illinois, Champaign-Urbana, Illinois 61801 (United States)
3. Carleton University, Ottawa, Ontario, K1S 5B6 (Canada)
4. McGill University, Montreal, Quebec, H3A 2T8 (Canada)
5. Ithaca College, Ithaca, New York 14850 (United States)
6. University of Kansas, Lawrence, Kansas 66045 (United States)
7. University of Minnesota, Minneapolis, Minnesota 55455 (United States)
8. State University of New York at Albany, Albany, New York 12222 (United States)
9. Ohio State University, Columbus, Ohio 43210 (United States)
10. University of Oklahoma, Norman, Oklahoma 73019 (United States)
11. Purdue University, West Lafayette, Indiana 47907 (United States)
12. University of Rochester, Rochester, New York 14627 (United States)

We have searched for the decays B{r_arrow}{mu}{bar {nu}}{sub {mu}}{gamma} and B{r_arrow}e{bar {nu}}{sub e}{gamma} in a sample of 2.7{times}10{sup 6} charged B decays collected with the CLEO II detector. In the muon channel, we observe no candidates in the signal region and set an upper limit on the branching fraction of B(B{r_arrow}{mu}{bar {nu}}{sub {mu}}{gamma}){lt}5.2{times}10{sup {minus}5} at the 90{percent} confidence level. In the electron channel, we observe five candidates in the signal region and set an upper limit on the branching fraction of B(B{r_arrow}e{bar {nu}}{sub e}{gamma}){lt}2.0{times}10{sup {minus}4} at the 90{percent} confidence level. {copyright} {ital 1997} {ital The American Physical Society}

• OSTI ID: 628690
• Journal Information: Physical Review, D, Journal Name: Physical Review, D Journal Issue: 1 Vol. 56; ISSN PRVDAQ; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
ANTINEUTRINOS
B MESONS
BRANCHING RATIO
ELECTRON NEUTRINOS
ELECTRONS
GAMMA DECAY
LEPTONIC DECAY
MUON NEUTRINOS
MUONS