Heavy quark and chiral symmetry predictions for semileptonic decays [ital [bar B]][r arrow][ital D]([ital D][sup *])[pi][ital l][bar [nu]]

Journal Article · Fri Oct 01 04:00:00 EDT 1993 · Physical Review, D (Particles Fields); (United States)

DOI:https://doi.org/10.1103/PhysRevD.48.3204· OSTI ID:6244104

Cheng, H; Cheung, C; Dimm, W; Lin, G; Lin, Y C; Yan, T; Yu, H ^[1]

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1. Institute of Physics, Academia Sinica, Taipei, Taiwan 11529 (Taiwan, Province of China) Physics Department, National Central University, Chung-li, Taiwan 32054 (Taiwan, Province of China) Floyd R. Newman Laboratory of Nuclear Studies, Cornell University, Ithaca, New York 14853 (United States) Institute for Theoretical Physics, State University of New York, Stony Brook, New York 11794 (United States)

We study in detail the prediction for the semileptonic decays [ital [bar B]][r arrow][ital D]([ital D][sup *])[pi][ital l][bar [nu]] by heavy quark and chiral symmetry. The branching ratio for [ital [bar B]][r arrow][ital D][pi][ital l][bar [nu]] is quite significant, as big as (0.5--1)%. The branching ratio for [ital [bar B]][r arrow][ital D][sup *][pi][ital l][bar [nu]] is only of the order of 10[sup [minus]4]--10[sup [minus]5]. Numerical results for various single-particle spectra and their dependence on the pion momentum cutoff schemes are presented in a series of figures, as are the model-independent ratios for differential rates of [ital D] and [ital D][sup *]. We also study the parity-violation effects on the decay rates for different polarizaton states of the [ital D][sup *].

• OSTI ID: 6244104
• Journal Information: Physical Review, D (Particles Fields); (United States), Journal Name: Physical Review, D (Particles Fields); (United States) Vol. 48:7; 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-)
662420 -- Properties of Mesons & Meson Resonances-- (1992-)
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ANTI-B NEUTRAL MESONS
ANTILEPTONS
ANTIMATTER
ANTINEUTRINOS
ANTIPARTICLES
B MESONS
B NEUTRAL MESONS
BEAUTY PARTICLES
BOSONS
BRANCHING RATIO
CHARM PARTICLES
CHARMED MESONS
CHIRAL SYMMETRY
D -2010 MESONS
D -2420 MESONS
D MESONS
DECAY
ELEMENTARY PARTICLES
ENERGY SPECTRA
FERMIONS
HADRONS
LEPTONS
MASSLESS PARTICLES
MATTER
MESONS
NEUTRINOS
PARITY
PARTICLE DECAY
PARTICLE PROPERTIES
PERTURBATION THEORY
PIONS
POLARIZATION
POSTULATED PARTICLES
PSEUDOSCALAR MESONS
QUARKS
SEMILEPTONIC DECAY
SPECTRA
SYMMETRY
VECTOR MESONS
VIOLATIONS
WEAK PARTICLE DECAY