Measurement of the [ital [bar B]][r arrow][ital D][sup *][ital l][bar [nu]] branching fractions and [vert bar][ital V][sub [ital c][ital b]][vert bar]

Journal Article · Wed Feb 01 00:00:00 EST 1995 · Physical Review, D (Particles Fields); (United States)

DOI:https://doi.org/10.1103/PhysRevD.51.1014· OSTI ID:6578069

Barish, B; Chadha, M; Chan, S; Cowen, D F; Eigen, G; Miller, J S; O'Grady, C; Urheim, J; Weinstein, A J ^[1]; Acosta, D; Athanas, M; Masek, G; Paar, H P ^[2]; Gronberg, J; Kutschke, R; Menary, S; Morrison, R J; Nakanishi, S; Nelson, H N; Nelson, T K ; Qiao, C; Richman, J D; Ryd, A; Tajima, H; Sperka, D; Witherell, M S ^[3]; Procario, M ^[4]; Balest, R; Cho, K; Daoudi, M; Ford, W T; Johnson, D R; Lingel, K; Lohner, M; Rankin, P; Smith, J G ^[5]; Alexander, J P; Bebek, C; Berkelman, K; Bloom, K; Browder, T E; Cassel, D G; Cho, H A; Coffman, D M; Crowcroft, D S; Drell, P S; Ehrlich, R

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1. California Institute of Technology, Pasadena, California 91125 (United States)
2. University of California, San Diego, La Jolla, California 92093 (United States)
3. University of California, Santa Barbara, California 93106 (United States)
4. Carnegie-Mellon University, Pittsburgh, Pennsylvania 15213 (United States)
5. University of Colorado, Boulder, Colorado 80309-0390 (United States)

From this partial width we calculate [ital [bar B]][r arrow][ital D][sup *][ital l][bar [nu]] branching fractions that do not depend on [ital f][sub +[minus]]/[ital f][sub 00] or the individual [ital B] lifetimes, but only on the charged to neutral [ital B] lifetime ratio. The product of the CKM matrix element [vert bar][ital V][sub [ital c][ital b]][vert bar] times the normalization of the decay form factor at the point of no recoil of the [ital D][sup *] meson, [ital scrF]([ital y]=1), is determined from a linear fit to the combined differential decay rate of the exclusive [ital [bar B]][r arrow][ital D][sup *][ital l][bar [nu]] decays: [vert bar][ital V][sub [ital c][ital b]][vert bar][ital scrF](1)=0.0351[plus minus]0.0019 (stat) [plus minus]0.0018 (syst) [plus minus]0.0008 (lifetime). The value for [vert bar][ital V][sub [ital c][ital b]][vert bar] is extracted using theoretical calculations of the form factor normalization.

• OSTI ID: 6578069
• Journal Information: Physical Review, D (Particles Fields); (United States), Vol. 51:3; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
Pa
ANTI-B NEUTRAL MESONS
SEMILEPTONIC DECAY
B MINUS MESONS
BRANCHING RATIO
D MESONS
FORM FACTORS
KOBAYASHI-MASKAWA MATRIX
LEPTONS
LIFETIME
NEUTRINOS
WIDTH
B MESONS
B NEUTRAL MESONS
BEAUTY PARTICLES
BOSONS
CHARM PARTICLES
CHARMED MESONS
DECAY
DIMENSIONS
ELEMENTARY PARTICLES
FERMIONS
FIELD THEORIES
HADRONS
MASSLESS PARTICLES
MATRICES
MESONS
PARTICLE DECAY
PARTICLE PROPERTIES
PSEUDOSCALAR MESONS
UNIFIED-FIELD THEORIES
WEAK PARTICLE DECAY
662350* - Decays of Mesons- (1992-)
662210 - Specific Theories & Interaction Models
Particle Systematics- Unified Theories & Models- (1992-)