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29 March 2024
 
  » arxiv » hep-ph/0006104

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Decays and Lifetime of B_c in QCD Sum Rules
V.V.Kiselev ; A.E.Kovalsky ; A.K.Likhoded ;
Date 11 Jun 2000
Subject hep-ph
AbstractIn 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/0006104
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