Form factors of heavy-light systems in point-form relativistic quantum mechanics: the Isgur-Wise function

Details Form factors of heavy-light systems in point-form relativistic quantum mechanics: the Isgur-Wise function Form factors of heavy-light systems in point-form relativistic quantum mechanics: the Isgur-Wise function

2010-11-02

arxiv.org/abs/1011.0547v1

Few Body Syst.50:227-229,2011

Physics

High Energy Physics

High Energy Physics - Phenomenology

Presented at the 21st European Conference on Few-Body Problems in Physics, Salamanca, Spain, 30 August - 3 September 2010

Scientific paper

10.1007/s00601-010-0121-9

We investigate electromagnetic and weak form factors of heavy-light mesons in the context of point-form relativistic quantum mechanics. To this aim we treat the physical processes from which such electroweak form factors are extracted by means of a coupled channel approach which accounts for the dynamics of the intermediate gauge bosons. It is shown that heavy-quark symmetry is respected by this formulation. A simple analytical expression is obtained for the Isgur-Wise function in the heavy-quark limit. Breaking of heavy-quark symmetry due to realistic values of the heavy-quark mass are studied numerically.

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