We study the exclusive semileptonic and nonleptonic decays of the first radial excited heavy-light pseudoscalars Dq(2S) and Bq(2S) (q =u,d,s) with the improved Bethe-Salpeter (B-S) method which takes into account the ...We study the exclusive semileptonic and nonleptonic decays of the first radial excited heavy-light pseudoscalars Dq(2S) and Bq(2S) (q =u,d,s) with the improved Bethe-Salpeter (B-S) method which takes into account the relativistic effects in wave functions and transition matrix elements.展开更多
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...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.展开更多
基金Supported in part by the National Natural Science Foundation of China under Grant No 11175051.
文摘We study the exclusive semileptonic and nonleptonic decays of the first radial excited heavy-light pseudoscalars Dq(2S) and Bq(2S) (q =u,d,s) with the improved Bethe-Salpeter (B-S) method which takes into account the relativistic effects in wave functions and transition matrix elements.
基金Supported by National Natural Science Foundation of China(11175051)
文摘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.
