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Article overview
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B_c Decays and Lifetime in QCD Sum Rules | V.V.Kiselev
; A.E.Kovalsky
; A.K.Likhoded
; | Date: |
11 Feb 2000 | Journal: | Nucl.Phys. B585 (2000) 353-382 | Subject: | hep-ph | Abstract: | In the framework of three-point QCD sum rules, the form factors for the semileptonic decays of B_c --> B_s(B_s^*) l
u are calculated with account for the Coulomb-like alpha_s/v-corrections in the heavy quarkonium. The generalized relations due to the spin symmetry of HQET/NRQCD for the form factors are derived at the recoil momentum close to zero. The nonleptonic decays are studied using the assumption on the factorization. The B_c meson lifetime is estimated by summing up the dominating exclusive modes in the c --> s transition combining the current calculations with the previous analysis of b --> c decays in the sum rules of QCD and NRQCD. | Source: | arXiv, hep-ph/0002127 | Services: | Forum | Review | PDF | Favorites |
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