Strong decays of heavy baryons in the Bethe-Salpeter formalism

Journal Article · Fri Feb 01 04:00:00 EST 2008 · Physical Review. D, Particles Fields

DOI:https://doi.org/10.1103/PHYSREVD.77.036003· OSTI ID:21039064

Xinheng, Guo; Kewei, Wei; Xinghua, Wu ^[1]

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1. Institute of Low Energy Nuclear Physics, Beijing Normal University, Beijing 100875 (China)

In this paper we study the properties of diquarks (composed of u and/or d quarks) in the Bethe-Salpeter (BS) formalism under the covariant instantaneous approximation. We calculate their BS wave functions and study their effective interaction with the pion. Using the effective coupling constant among the diquarks and the pion, in the heavy quark limit m{sub Q}{yields}{infinity}, we calculate the decay widths of {sigma}{sub Q}{sup (*)} (Q=c, b) in the BS formalism under the covariant instantaneous approximation and then give predictions of the decay widths {gamma}({sigma}{sub b}{sup (*)}{yields}{lambda}{sub b}+{pi})

• OSTI ID: 21039064
• Journal Information: Physical Review. D, Particles Fields, Journal Name: Physical Review. D, Particles Fields Journal Issue: 3 Vol. 77; ISSN PRVDAQ; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
APPROXIMATIONS
B QUARKS
BARYONS
BETHE-SALPETER EQUATION
C QUARKS
COUPLING CONSTANTS
D QUARKS
HADRONIC PARTICLE DECAY
PARTICLE WIDTHS
PIONS
QUANTUM CHROMODYNAMICS
T QUARKS
U QUARKS
WAVE FUNCTIONS