Evidence for penguin-diagram decays: First observation of [ital B][r arrow][ital K][sup *](892)[gamma]

Journal Article · Mon Aug 02 00:00:00 EDT 1993 · Physical Review Letters; (United States)

DOI:https://doi.org/10.1103/PhysRevLett.71.674· OSTI ID:6216309

Ammar, R; Ball, S; Baringer, P; Coppage, D; Copty, N; Davis, R; Hancock, N; Kelly, M; Kwak, N; Lam, H; Kubota, Y; Lattery, M; Nelson, J K; Patton, S; Perticone, D; Poling, R; Savinov, V; Schrenk, S; Wang, R; Alam, M S ; Kim, I J; Nemati, B; O'Neill, J J; Severini, H; Sun, C R; Zoeller, M M; Crawford, G; Daubenmeir, M; Fulton, R; Fujino, D; Gan, K K; Honscheid, K; Kagan, H; Kass, R; Lee, J; Malchow, R; Morrow, F; Skovpen, Y; Sung, M; White, C; Whitmore, J; Wilson, P; Butler, F; Fu, X; Kalbfleisch, G; Lambrecht, M; Ross, W R; Skubic, P; Snow, J; Wang, P L; Wood, M; Bortoletto, D; Brown, D N; Fast, J; McIlwain, R L; Miao, T; Miller, D H; Modesitt, M; Schaffner, S F; Shibata, E I; Shipsey, I P.J.; Wang, P N; Battle, M; Ernst, J; Kroha, H; Roberts, S; Sparks, K; Thorndike, E H; Wang, C H; Dominick, J; Sanghera, S; Skwarnicki, T; Stroynowski, R; Artuso, M; He, D; Goldberg, M; Horwitz, N; Kennett, R; Moneti, G C; Muh,

We have observed the decays [ital B][sup 0][r arrow][ital K][sup *](892)[sup 0][gamma] and [ital B][sup [minus]][r arrow][ital K][sup *](892)[sup [minus]][gamma], which are evidence for the quark-level process [ital b][r arrow][ital s][gamma]. The average branching fraction is (4.5[plus minus]1.5[plus minus]0.9)[times]10[sup [minus]5]. This value is consistent with standard model predictions from electromagnetic penguin diagrams.

• OSTI ID: 6216309
• Journal Information: Physical Review Letters; (United States), Journal Name: Physical Review Letters; (United States) Vol. 71:5; ISSN 0031-9007; ISSN PRLTAO
• Country of Publication: United States
• Language: English

Related Subjects

662390* -- Electromagnetic Processes & Properties-- (1992-)
662420 -- Properties of Mesons & Meson Resonances-- (1992-)
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
B MESONS
B NEUTRAL MESONS
BEAUTY PARTICLES
BOSONS
BRANCHING RATIO
CP INVARIANCE
DECAY
ELECTROMAGNETIC PARTICLE DECAY
ELEMENTARY PARTICLES
HADRONS
INVARIANCE PRINCIPLES
K -892 MESONS
MASSLESS PARTICLES
MATHEMATICAL MODELS
MESONS
PARTICLE DECAY
PARTICLE MODELS
PHOTONS
PSEUDOSCALAR MESONS
STANDARD MODEL
STRANGE MESONS
STRANGE PARTICLES
UNIFIED GAUGE MODELS
VECTOR MESONS
VIOLATIONS