Lepton asymmetry measurements in [ital [bar B]][r arrow][ital D][sup *][ital l[minus]][bar [nu]][sub [ital l]] and implications for [ital V][minus][ital A] and the form factors

Journal Article · Mon Feb 01 04:00:00 EST 1993 · Physical Review, D (Particles Fields); (United States)

DOI:https://doi.org/10.1103/PhysRevD.47.791· OSTI ID:6887577

Sanghera, S; Skwarnicki, T; Stroynowski, R; Artuso, M; Goldberg, M; Horwitz, N; Kennett, R; Moneti, G C; Muheim, F; Playfer, S; Rozen, Y; Rubin, P; Stone, S; Thulasidas, M; Yao, W; Zhu, G; Barnes, A V; Bartelt, J; Csorna, S E; Egyed, Z ; Jain, V; Sheldon, P; Akerib, D S; Barish, B; Chadha, M; Cowen, D F; Eigen, G; Miller, J S; Urheim, J; Weinstein, A J; Acosta, D; Masek, G; Ong, B; Paar, H; Sivertz, M; Bean, A; Gronberg, J; Kutschke, R; Menary, S; Morrison, R J; Nelson, H; Richman, J; Tajima, H; Schmidt, D; Sperka, D; Witherell, M; Procario, M; 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; Cassel, D G; Coffman, D M; Drell, P S; Ehrlich, R; Galik, R S; Garcia-Sciveres, M; Geiser, B; Gittelman, B; Gray, S W; Hartill, D L; Heltsley, B K; Honscheid, K; Jones, C; Kandaswamy, J; Katayama, N; Kim, P C; Kreinick, D L; Lud,

We present a measurement of the lepton decay asymmetry [ital A][sub fb] in the reaction [ital [bar B]][r arrow][ital D][sup *][ital l[minus]][bar [nu]][sub [ital l]] using data collected with the CLEO II detector at the Cornell Electron Storage Ring (CESR). The value of [ital A][sub fb] confirms that the chirality of the weak interaction is predominantly left-handed in [ital b][r arrow][ital c] transitions as expected in the standard model, if it is assumed that the lepton current is also left-handed. Using [ital A][sub fb] and the previously determined branching ratio, [ital q][sup 2] distribution, and [ital D][sup *] polarization, we obtain the first measurement of the form-factor ratios that are used to describe this semileptonic decay.

• OSTI ID: 6887577
• Journal Information: Physical Review, D (Particles Fields); (United States), Journal Name: Physical Review, D (Particles Fields); (United States) Vol. 47:3; ISSN PRVDAQ; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

662120 -- General Theory of Particles & Fields-- Symmetry
Conservation Laws
Currents & Their Properties-- (1992-)
662350* -- Decays of Mesons-- (1992-)
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ANGULAR DISTRIBUTION
ANTILEPTONS
ANTIMATTER
ANTINEUTRINOS
ANTIPARTICLES
ASYMMETRY
B MESONS
BEAUTY PARTICLES
BOSONS
BRANCHING RATIO
CESR STORAGE RING
CHARM PARTICLES
CHARMED MESONS
CHIRAL SYMMETRY
CLEO STELLARATOR
CLOSED PLASMA DEVICES
COUPLING CONSTANTS
D MESONS
DATA
DECAY
DISTRIBUTION
ELEMENTARY PARTICLES
EXPERIMENTAL DATA
FERMIONS
FORM FACTORS
HADRONS
HELICITY
INFORMATION
INTERACTIONS
LEPTONS
MASSLESS PARTICLES
MATHEMATICAL MODELS
MATTER
MESONS
NEUTRINOS
NUMERICAL DATA
PARTICLE DECAY
PARTICLE INTERACTIONS
PARTICLE MODELS
PARTICLE PRODUCTION
PARTICLE PROPERTIES
POLARIZATION
POSTULATED PARTICLES
PSEUDOSCALAR MESONS
QUARK-ANTIQUARK INTERACTIONS
QUARKS
SEMILEPTONIC DECAY
STANDARD MODEL
STELLARATORS
STORAGE RINGS
SYMMETRY
THERMONUCLEAR DEVICES
UNIFIED GAUGE MODELS
V-A THEORY
WEAK PARTICLE DECAY