B decays to radially excited D

2013/11/28 by D. Becirevic, Becirevic, D., B. Blossier +7
Physics and Astronomy · #FOS: Physical sciences #High Energy Physics - Lattice (hep-lat) #High Energy Physics - Phenomenology (hep-ph) #hep-lat #hep-ph

paper · pdf · doi:10.48550/arxiv.1311.7440

7 pages, 3 figures. Proceedings of the 31st International Symposium on Lattice Field Theory (Lattice 2013), 29 July - 3 August 2013, Mainz, Germany

arxiv created 2013/11/28 · arxiv updated 2013/12/02

Abstract

We discuss the possibility to measure in present experiments, especially LHCb, the non leptonic decay branching ratio B → D' π, and emphasize phenomenological implications on B → D' l ν semileptonic decay. We have estimated by lattice QCD the D' decay constant f_D' that parameterizes the D' emission contribution to the Class-III non leptonic decay B^- → D⁰ π^-. In addition, we provide a new estimate of the decay constants f_D_s,q which read f_D_s=252(3) MeV and f_D_s/f_D=1.23(1)(1).

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