Excited charm mesons in semileptonic B decay and their contributions to a Bjorken sum rule
- Continuous Electron Beam Accelerator Facility, Newport News, VA (USA)
- California Institute of Technology, Pasadena, CA (USA)
It has recently been shown that hadrons containing a single heavy quark exhibit a new flavor-spin symmetry of QCD. We exploit this symmetry to obtain model-independent predictions for the 14 form factors in weak decays from the ground-state pseudoscalar meson {ital P}{sub {ital Q}{ital i}} of a heavy quark {ital Q}{sub {ital i}} to the low-lying positive-parity excited states of a heavy quark {ital Q}{sub {ital j}} in terms of two universal functions of momentum transfer. These predictions are of interest in the study of {ital {bar B}}{r arrow}{ital D}{sub 2}{sup *}(2460), {ital D}{sub 1}(2420), {ital D}{sub 1}({similar to}2360), and {ital D}{sub 0}{sup *}({similar to}2360) semileptonic decays. We also discuss the connection between these results and the slope of the function {xi} (which determines the {ital {bar B}}{r arrow}{ital D} and {ital {bar B}}{r arrow}{ital D}{sup *} transition form factors) given by a heavy-quark sum rule suggested by Bjorken.
- DOE Contract Number:
- AC03-81ER40050; AC05-84ER40150
- OSTI ID:
- 5908744
- Journal Information:
- Physical Review, D (Particles Fields); (USA), Vol. 43:3; ISSN 0556-2821
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
BEAUTY MESONS
SEMILEPTONIC DECAY
ANTIMESONS
CHARM PARTICLES
D MESONS
FLAVOR MODEL
FORM FACTORS
LORENTZ INVARIANCE
MOMENTUM TRANSFER
PSEUDOSCALAR MESONS
QUANTUM CHROMODYNAMICS
QUARKS
SPIN
SUM RULES
ANGULAR MOMENTUM
ANTIMATTER
ANTIPARTICLES
BEAUTY PARTICLES
BOSONS
CHARMED MESONS
COMPOSITE MODELS
DECAY
ELEMENTARY PARTICLES
EQUATIONS
FERMIONS
FIELD THEORIES
HADRONS
INVARIANCE PRINCIPLES
MATHEMATICAL MODELS
MESONS
PARTICLE DECAY
PARTICLE MODELS
PARTICLE PROPERTIES
POSTULATED PARTICLES
QUANTUM FIELD THEORY
QUARK MODEL
WEAK PARTICLE DECAY
645203* - High Energy Physics- Particle Interactions & Properties-Theoretical- Weak Interactions & Properties
645300 - High Energy Physics- Particle Invariance Principles & Symmetries