Investigation of the bottomonium ground state {eta}{sub b} via its inclusive charm decays

Journal Article · Sat Dec 15 04:00:00 EST 2007 · Physical Review. D, Particles Fields

DOI:https://doi.org/10.1103/PHYSREVD.76.125013· OSTI ID:21024078

Gang, Hao; Peng, Sun ^[1]; Congfeng, Qiao ^[1]

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1. Department of Physics, Graduate University of Chinese Academy of Sciences, YuQuan Road 19A, Beijing 100049 (China)

Based on the nonrelativistic QCD factorization formalism, we calculate the bottomonium ground state {eta}{sub b}, inclusive charm decays at the leading order in the strong coupling constant {alpha}{sub s}, and quarkonium internal relative velocity v. The inclusive charm pair production in {eta}{sub b} decay is mainly realized through the {eta}{sub b}{yields}ccg process, where the charm and anticharm quarks then dominantly hadronize into charmed hadrons. The momentum distributions of the final states are presented. In this work, we also calculate the J/{psi} inclusive production rate in the {eta}{sub b} decays, where the color-octet contribution is found to be very important. We expect this study may shed some light on finding {eta}{sub b} or knowing more about its nature.

• OSTI ID: 21024078
• Journal Information: Physical Review. D, Particles Fields, Journal Name: Physical Review. D, Particles Fields Journal Issue: 12 Vol. 76; ISSN PRVDAQ; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
B QUARKS
BOTTOMONIUM
C QUARKS
COLOR MODEL
COUPLING CONSTANTS
DISTRIBUTION
FACTORIZATION
GLUONS
GROUND STATES
J PSI-3097 MESONS
PAIR PRODUCTION
PARTICLE PRODUCTION
QUANTUM CHROMODYNAMICS