Bc decays and lifetime in QCD sum rules
VV Kiselev, AE Kovalsky, AK Likhoded - Nuclear Physics B, 2000 - Elsevier
VV Kiselev, AE Kovalsky, AK Likhoded
Nuclear Physics B, 2000•ElsevierIn the framework of three-point QCD sum rules, the form factors for the semileptonic decays
of B c+→ B s (B s∗) l+ ν l are calculated with account for the Coulomb-like αs/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 Bc-meson
lifetime is estimated by summing up the dominating exclusive modes in the c→ s transition …
of B c+→ B s (B s∗) l+ ν l are calculated with account for the Coulomb-like αs/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 Bc-meson
lifetime is estimated by summing up the dominating exclusive modes in the c→ s transition …
In the framework of three-point QCD sum rules, the form factors for the semileptonic decays of B c+→B s(B s∗)l +ν l are calculated with account for the Coulomb-like αs/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 Bc -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.
Elsevier
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