TY - JOUR
T1 - Effective field theory of heavy mesons
AU - Cheng, Hai Yang
AU - Cheung, Chi Yee
AU - Zhang, Wei Min
N1 - Copyright:
Copyright 2017 Elsevier B.V., All rights reserved.
PY - 1998
Y1 - 1998
N2 - In this paper we present a detailed formulation for a recently proposed effective field theory to describe the nonperturbative QCD dynamics of heavy mesons. This effective theory incorporates heavy quark symmetry (HQS) and heavy quark effective theory (HQET). Heavy mesons in this theory are constructed as composite particles of a heavy quark bounded with light degrees of freedom. The heavy meson properties in the heavy quark limit and the (Formula presented) corrections can then be explicitly evaluated from this effective theory. All the basic parameters of HQET, namely, the heavy quark mass (Formula presented) the heavy meson residual mass (Formula presented) and the HQS breaking mass parameters (Formula presented) and (Formula presented) are consistently determined. (Formula presented) is found to be small due to a large cancellation between the heavy quark kinetic energy and the chromo-electric interaction between the heavy quark and light degrees of freedom. We also evaluate the Isgur-Wise function, the decay constant, and the axial-vector coupling constant of heavy mesons.
AB - In this paper we present a detailed formulation for a recently proposed effective field theory to describe the nonperturbative QCD dynamics of heavy mesons. This effective theory incorporates heavy quark symmetry (HQS) and heavy quark effective theory (HQET). Heavy mesons in this theory are constructed as composite particles of a heavy quark bounded with light degrees of freedom. The heavy meson properties in the heavy quark limit and the (Formula presented) corrections can then be explicitly evaluated from this effective theory. All the basic parameters of HQET, namely, the heavy quark mass (Formula presented) the heavy meson residual mass (Formula presented) and the HQS breaking mass parameters (Formula presented) and (Formula presented) are consistently determined. (Formula presented) is found to be small due to a large cancellation between the heavy quark kinetic energy and the chromo-electric interaction between the heavy quark and light degrees of freedom. We also evaluate the Isgur-Wise function, the decay constant, and the axial-vector coupling constant of heavy mesons.
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U2 - 10.1103/PhysRevD.58.074003
DO - 10.1103/PhysRevD.58.074003
M3 - Article
AN - SCOPUS:4243643516
VL - 58
JO - Physical Review D - Particles, Fields, Gravitation and Cosmology
JF - Physical Review D - Particles, Fields, Gravitation and Cosmology
SN - 1550-7998
IS - 7
ER -