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Heavy meson decay constants to 1/m(Q)
Dai, YB; Guo, XH; Huang, CS; Jin, HY; Dai, YB , ACAD SINICA,INST THEORET PHYS,POB 2735,BEIJING 100080,PEOPLES R CHINA.
1995
发表期刊COMMUNICATIONS IN THEORETICAL PHYSICS
ISSN0253-6102
卷号24期号:4页码:453-468
摘要We 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.
关键词Chiral Perturbation-theory Quark Effective Theory Weak Form-factors Qcd Sum-rules Symmetry Realization Fb
学科领域Physics
收录类别SCI
文献类型期刊论文
条目标识符http://ir.itp.ac.cn/handle/311006/12679
专题理论物理所1978-2010年知识产出
通讯作者Dai, YB , ACAD SINICA,INST THEORET PHYS,POB 2735,BEIJING 100080,PEOPLES R CHINA.
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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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