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arXiv · 1301.7336

On the significance of B-decays to radially excited D

Damir Becirevic·Benoit Blossier·Antoine Gerardin·Alain Le Yaouanc·Francesco Sanfilippo
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Abstract

We discuss the possibilities of testing the recent claims of a relatively large value of the B --> D' transition form factor through B0--> D' pi+ and B- --> D' pi- decay modes. To estimate the width of the latter we need the decay constant of the radially excited D-meson that we computed in lattice QCD with Nf=2 dynamical flavors and after taking the continuum limit we found f(D')=117(25) MeV. We also provide an update for the values of the D-meson decay constants obtained by using maximally twisted mass QCD.

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Damir Becirevic, Benoit Blossier, Antoine Gerardin, Alain Le Yaouanc, Francesco Sanfilippo. 2013-04-10. On the significance of B-decays to radially excited D. https://doi.org/10.1016/j.nuclphysb.2013.04.008

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