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Dai, YB; Guo, XH; Huang, CS; Jin, HY; Dai, YB , ACAD SINICA,INST THEORET PHYS,POB 2735,BEIJING 100080,PEOPLES R CHINA.
Heavy meson decay constants to 1/m(Q)
Source PublicationCOMMUNICATIONS IN THEORETICAL PHYSICS
KeywordChiral Perturbation-theory Quark Effective Theory Weak Form-factors Qcd Sum-rules Symmetry Realization Fb
AbstractWe introduce the vector meson contributions in heavy-light chiral perturbation theory (HLCPT) and construct the Lagrangian and current to the order 1/m(Q). With this, to the order 1/Lambda(csb)(2) (Lambda(csb) is the chiral symmetry breaking scale) we calculate corrections to f(D) and f(B) arising from coupled-channel effects to the orders 1/m(c) and 1/m(b). At the tree level in HLCPT, using the relativistic Bethe-Salpeter (BS) equation with the kernel containing a confinement term and a gluon exchange term in a covariant generalization of the Coulomb gauge we calculate f(D)((0)) and f(B)((0)) when m(Q) --> infinity as well as the 1/m(Q) corrections. HLCPT and the heavy quark effective theory (HQET) are matched at the scale Lambda(csb). Adding the perturbative and nonperturbative contributions we give the values for f(D) and f(B) respectively. It is found that our result is in agreement with the relation f(D) = f(B) from lattice calculations.
1995
ISSN0253-6102
Volume24Issue:4Pages:453-468
Subject AreaPhysics
Indexed BySCI
Document Type期刊论文
Identifierhttp://ir.itp.ac.cn/handle/311006/12679
Collection理论物理所科研产出_SCI论文
Corresponding AuthorDai, YB , ACAD SINICA,INST THEORET PHYS,POB 2735,BEIJING 100080,PEOPLES R CHINA.
Recommended Citation
GB/T 7714
Dai, YB,Guo, XH,Huang, CS,et al. Heavy meson decay constants to 1/m(Q)[J]. COMMUNICATIONS IN THEORETICAL PHYSICS,1995,24(4):453-468.
APA Dai, YB,Guo, XH,Huang, CS,Jin, HY,&Dai, YB , ACAD SINICA,INST THEORET PHYS,POB 2735,BEIJING 100080,PEOPLES R CHINA..(1995).Heavy meson decay constants to 1/m(Q).COMMUNICATIONS IN THEORETICAL PHYSICS,24(4),453-468.
MLA Dai, YB,et al."Heavy meson decay constants to 1/m(Q)".COMMUNICATIONS IN THEORETICAL PHYSICS 24.4(1995):453-468.
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