On the significance of B-decays to the radially excited D

被引：17
作者：
Becirevic, Damir [1 ]
Blossier, Benoit [1 ]
Gerardin, Antoine [1 ]
Le Yaouanc, Alain [1 ]
Sanfilippo, Francesco [1 ]
机构：
[1] Univ Paris 11, Ctr Orsay, Phys Theor Lab, F-91405 Orsay, France
来源：
NUCLEAR PHYSICS B | 2013年 / 872卷 / 03期
关键词：
TWISTED MASS FERMIONS; WEAK DECAYS; SEMILEPTONIC DECAYS; HEAVY-LIGHT; MESONS; BOUNDS;
D O I：
10.1016/j.nuclphysb.2013.04.008
中图分类号：
O412 [相对论、场论]; O572.2 [粒子物理学];
学科分类号：
摘要：
We discuss the possibilities of testing the recent claims of a relatively large B -> D' transition form factor through the non-leptonic (B) over bar (0) -> D'(+)pi(-) and B- -> D'(0)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 N-f = 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. (C) 2013 Elsevier B.V. All rights reserved.
引用
收藏
页码：313 / 332
页数：20
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