Observation of [ital B][sup 0] decay to two charmless mesons

Journal Article · Mon Dec 13 04:00:00 EST 1993 · Physical Review Letters; (United States)

DOI:https://doi.org/10.1103/PhysRevLett.71.3922· OSTI ID:5197078

Battle, M; Ernst, J; Kroha, H; Kwon, Y; Roberts, S; Sparks, K; Thorndike, E H; Wang, C H; Dominick, J; Sanghera, S; Shelkov, V; Skwarnicki, T; Stroynowski, R; Volobouev, I; Zadorozhny, P; Artuso, M; He, D; Goldberg, M; Horwitz, N; Kennett, R ; Moneti, G C; Muheim, F; Mukhin, Y; Playfer, S; Rozen, Y; Stone, S; Thulasidas, M; Vasseur, G; Zhu, G; Bartelt, J; Csorna, S E; Egyed, Z; Jain, V; Sheldon, P; Akerib, D S; Barish, B; Chadha, M; Chan, S; Cowen, D F; Eigen, G; Miller, J S; O'Grady, C; Urheim, J; Weinstein, A J; Acosta, D; Athanas, M; Masek, G; Paar, H; Bean, A; Gronberg, J; Kutschke, R; Menary, S; Morrison, R J; Nakanishi, S; Nelson, H N; Nelson, T K; Richman, J D; Ryd, A; Tajima, H; Schmidt, D; Sperka, D; Witherell, M S; Procario, M; Yang, S; Balest, R; Cho, K; Daoudi, M; Ford, W T; Johnson, D R; Lingel, K; Lohner, M; Rankin, P; Smith, J G; Alexander, J P; Bebek, C; Berkelman, K; Besson, D; Browder, T E; C,

We report results from a search for the decays [ital B][sup 0][r arrow][pi][sup +][pi][sup [minus]], [ital B][sup 0][r arrow][ital K][sup +][pi][sup [minus]], and [ital B][sup 0][r arrow][ital K][sup +][ital K[minus]]. We find 90% confidence level upper limits on the branching fractions, [ital B][sub [pi][pi]][lt]2.9[times]10[sup [minus]5], [ital B][sub [ital K][pi]][lt]2.6[times]10[sup [minus]5], and [ital B][sub [ital K][ital K]][lt]0.7[times]10[sup [minus]5]. While there is no statistically significant signal in the individual modes, the sum of [ital B][sub [pi][pi]] and [ital B][sub [ital K][pi]] exceeds zero with a significance of more than 4 standard deviations, indicating that we have observed charmless hadronic [ital B] decays.

• OSTI ID: 5197078
• Journal Information: Physical Review Letters; (United States), Journal Name: Physical Review Letters; (United States) Vol. 71:24; ISSN 0031-9007; ISSN PRLTAO
• Country of Publication: United States
• Language: English

Related Subjects

662350* -- Decays of Mesons-- (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
ELEMENTARY PARTICLES
HADRONS
INVARIANCE PRINCIPLES
KAONS
KAONS MINUS
KAONS PLUS
MESONS
PARTICLE DECAY
PIONS
PIONS MINUS
PIONS PLUS
PSEUDOSCALAR MESONS
STRANGE MESONS
STRANGE PARTICLES
VIOLATIONS
WEAK HADRONIC DECAY
WEAK PARTICLE DECAY