Studies of heavy hadron physics

Journal Article · Wed Dec 14 04:00:00 EST 2011 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.3667320· OSTI ID:22003996

Xinheng, Guo ^[1]

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1. College of Nuclear Science and Technology, Beijing Normal University, Beijing 100875 (China)

In the diquark picture, we establish Bethe-Salpeter equations for ground states of heavy baryons containing one heavy quark and two heavy quarks in the heavy quark limit, respectively. The Bethe-Salpeter equations for both heavy and light diquarks are also established. Assuming kernels to consist of a scalar confinement term and a one-gluon-exchange term we solve Bethe-Salpeter wave functions numerically in the covariant instantaneous approximation and give some applications including semileptonic and nonleptonic decay widths of heavy baryons, the average kinetic energy of the heavy quark in {Lambda}{sub Q}, {Sigma}{sub Q}{sup (*)}{yields}{Lambda}{sub Q}+{pi} decay widths, and heavy quark distribution functions. We also study possible molecular heavy bound states in the Bethe-Salpeter approach. Proof of QCD factorization for {Lambda}{sub b}{yields}{Lambda}{sub c}{pi} is presented in the framework of QCD factorization.

• OSTI ID: 22003996
• Journal Information: AIP Conference Proceedings, Journal Name: AIP Conference Proceedings Journal Issue: 1 Vol. 1418; ISSN 0094-243X; ISSN APCPCS
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
B QUARKS
BARYONS
BETHE-SALPETER EQUATION
BOUND STATE
C QUARKS
DISTRIBUTION FUNCTIONS
FACTORIZATION
GLUONS
GROUND STATES
LAMBDA BARYONS
PARTICLE WIDTHS
QUANTUM CHROMODYNAMICS
QUARK MODEL
SIGMA BARYONS
T QUARKS
WAVE FUNCTIONS
WEAK HADRONIC DECAY