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arXiv · hep-ph/9512414

Form Factors for Semi-Leptonic and Radiative Decays of Heavy Mesons to Light Mesons

B. Stech
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Abstract

To know and understand form factors of hadronic currents is of decisive importance for analysing exclusive weak decays. The ratios of different form factors of a given process depend on the relativistic spin structure of initial and final particles. It is shown --- assuming simple properties of the spectator particle --- that these ratios can entirely be expresssed in terms of particle and quark mass parameters. For quark masses large compared to the spectator mass the Isgur-Wise relations follow. The corresponding amplitudes for heavy-to-light transitions show a very similar structure. In particular, the $F_0$ and $A_1$ form factors behave again differently from the $F_1, A_2, V$ and $T_1$ form factors.

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B. Stech. 1996-01-19. Form Factors for Semi-Leptonic and Radiative Decays of Heavy Mesons to Light Mesons. https://doi.org/10.1016/0920-5632(96)00363-5

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