Study of singlet-triplet mixing via semileptonic decays

The singlet-triplet mixing of 1P1-3P1 is studied via calculating the branching ratios of semileptonic decay Bs→Ds1lν and B→D1lν by means of the instantaneous Bethe-Salpeter method. Special attention is paid to the relativistic corrections, since they are large for the P-wave states. Using the Mandel...

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Bibliographic Details
Published inChinese physics C Vol. 37; no. 1; pp. 21 - 26
Main Authors Jiang, Yue, Wang, Guo-Li, Wang, Tian-Hong, Ju, Wan-Li
Format Journal Article
LanguageEnglish
Published 2013
Subjects
Decay
Form factors
Formalism
Integrals
Leptons
Mathematical analysis
NiAl
Wave functions
分支比
半轻子衰变
形式主义
混合
相对论修正
重叠积分
量子色动力学
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Summary:The singlet-triplet mixing of 1P1-3P1 is studied via calculating the branching ratios of semileptonic decay Bs→Ds1lν and B→D1lν by means of the instantaneous Bethe-Salpeter method. Special attention is paid to the relativistic corrections, since they are large for the P-wave states. Using the Mandelstam Formalism, we compute the transition form factors not only in the high-energy lepton end-point region but also in the full Q2 region. And the non-perturbative QCD effects are taken care of in the overlapping integral over the relativistic wave functions of the initial and nial states.
Bibliography:The singlet-triplet mixing of 1P1-3P1 is studied via calculating the branching ratios of semileptonic decay Bs→Ds1lν and B→D1lν by means of the instantaneous Bethe-Salpeter method. Special attention is paid to the relativistic corrections, since they are large for the P-wave states. Using the Mandelstam Formalism, we compute the transition form factors not only in the high-energy lepton end-point region but also in the full Q2 region. And the non-perturbative QCD effects are taken care of in the overlapping integral over the relativistic wave functions of the initial and nial states.
11-5641/O4
singlet-triplet mixing, semileptonic decay, instantaneous Bethe-Salpeter method
ObjectType-Article-2
SourceType-Scholarly Journals-1
ObjectType-Feature-1
content type line 23
ISSN:1674-1137
0254-3052
DOI:10.1088/1674-1137/37/1/013101