B decays to excited charm mesons

P. Colangelo , F. De Fazio , N. Paver

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classification ✦ hep-ph

keywords charmdecaysmesonsalphaaspectsconstantscouplingsdescribe

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We review several aspects of the phenomenology of P-wave $\bar q Q$ mesons: mass splittings, effective strong couplings and leptonic constants. We also describe a QCD sum rule determination to order $\alpha_s$ of the form factor $\tau_{1/2}(y)$ governing the semileptonic $B$ decays to the charm doublet with $J^P=(0^+_{1/2},1^+_{1/2})$.

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B decays to excited charm mesons

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