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题名: Heavy meson decay constants to 1/m(Q)
作者: Dai, YB ;  Guo, XH ;  Huang, CS ;  Jin, HY
刊名: COMMUNICATIONS IN THEORETICAL PHYSICS
出版日期: 1995
卷号: 24, 期号:4, 页码:453-468
关键词: CHIRAL PERTURBATION-THEORY ;  QUARK EFFECTIVE THEORY ;  WEAK FORM-FACTORS ;  QCD SUM-RULES ;  SYMMETRY ;  REALIZATION ;  FB
学科分类: Physics
通讯作者: Dai, YB , ACAD SINICA,INST THEORET PHYS,POB 2735,BEIJING 100080,PEOPLES R CHINA.
英文摘要: 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.
收录类别: SCI
内容类型: 期刊论文
URI标识: http://ir.itp.ac.cn/handle/311006/12679
Appears in Collections:理论物理所1978-2010年知识产出_期刊论文

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Recommended Citation:
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.
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