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arxiv: hep-ph/0211021 · v2 · submitted 2002-11-04 · ✦ hep-ph

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Exclusive Decays and Lifetime of B_c Meson in QCD sum rules

V.V.Kiselev
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classification ✦ hep-ph
keywords decaysestimateslifetimequarkrulesagreementapproachescalculations
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We summarize theoretical calculations of B_c decays and lifetime in the framework of QCD sum rules and compare the results with the estimates by the methods of Operator Product Expansion in the inverse heavy quark masses as well as of potential quark models. The agreement of estimates in the various approaches is discussed. The features of B_c decay modes are considered.

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  1. $B_c$ meson decays into $S$-wave charmonium plus light meson pairs in the perturbative QCD approach

    hep-ph 2026-01 unverdicted novelty 5.0

    pQCD calculations predict ~90% longitudinal polarization in B_c to J/psi or psi(2S) plus rho or K* mediated light meson pairs, with one branching ratio ratio matching LHCb at 2.67 vs 2.80.