P -wave charmonium production in B -meson decays
- High Energy Physics Division, Argonne National Laboratory, Argonne, Illinois 60439 (United States)
- Department of Physics and Astronomy, Northwestern University, Evanston, Illinois 60208 (United States)
- Newman Laboratory of Nuclear Studies, Cornell University, Ithaca, New York 14853 (United States)
We calculate the decay rates of {ital B} mesons into {ital P}-wave charmonium states using new factorization formulas that are valid to leading order in the relative velocity of the charmed quark and antiquark and to all orders in the running coupling constant of QCD. We express the production rates for all four {ital P} states in terms of two nonperturbative parameters: the derivative of the wave function at the origin and another parameter related to the probability for a charmed-quark--antiquark pair in the color-octet {ital S}-wave state to radiate a soft gluon and form a {ital P}-wave bound state. Using existing data on {ital B} meson decays into {chi}{sub {ital c}1} to estimate the color-octet parameter, we find that the color-octet mechanism may account for a significant fraction of the {chi}{sub {ital c}1} production rate and that {ital B} mesons should decay into {chi}{sub {ital c}2} at a similar rate.
- OSTI ID:
- 7197463
- Journal Information:
- Physical Review, D (Particles Fields); (United States), Vol. 46:9; ISSN 0556-2821
- Country of Publication:
- United States
- Language:
- English
Similar Records
Perturbative QCD fragmentation functions for production of [ital P]-wave charm and bottom mesons
Charmonium production via fragmentation at DESY HERA
Related Subjects
B MESONS
HADRONIC PARTICLE DECAY
CHARMONIUM
P WAVES
PARTICLE PRODUCTION
QUANTUM CHROMODYNAMICS
BEAUTY PARTICLES
BOSONS
DECAY
ELEMENTARY PARTICLES
FIELD THEORIES
HADRONS
MESONS
PARTIAL WAVES
PARTICLE DECAY
PSEUDOSCALAR MESONS
QUANTUM FIELD THEORY
QUARKONIUM
662350* - Decays of Mesons- (1992-)
662230 - Quantum Chromodynamics- (1992-)