Form factor relations for pseudoscalar to vector meson transitions

Details Form factor relations for pseudoscalar to vector meson transitions Form factor relations for pseudoscalar to vector meson transitions

1998-10-19

arxiv.org/abs/hep-ph/9810402v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

Latex, 9 pages, submitted to Phys. Rev. D (May 1998)

Scientific paper

In semi-leptonic and other weak decays of mesons, the hadronic matrix elements of the operators in the weak Hamiltonian are parametrized by standard sets of independent, Lorentz invariant, form factors. For the case of pseudoscalar to vector meson transitions, it has been shown that a Quark Model description leads to relations between some of the form factors. Here, I give an alternate, and more general, proof of those relations and thus confirm that, in the Quark Model, not all the form factors for pseudoscalar to vector meson transitions are independent. As an application of this result, a Quark Model measurement of the CKM parameter |Vub| can be obtained, where the dependence on all hadronic form factors is eliminated.

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