{ "id": "hep-ph/9512414", "version": "v2", "published": "1995-12-24T09:32:29.000Z", "updated": "1996-01-19T12:43:01.000Z", "title": "Form Factors for Semi-Leptonic and Radiative Decays of Heavy Mesons to Light Mesons", "authors": [ "B. Stech" ], "comment": "The definition of the radiative formfactor for the penguin has been changed to a more convenient notation, leading to T_1 = F_1 in the limit of spin symmetry. Additional minor corrections have been applied", "journal": "Nucl.Phys.Proc.Suppl.50:45-49,1996", "doi": "10.1016/0920-5632(96)00363-5", "categories": [ "hep-ph" ], "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.", "revisions": [ { "version": "v2", "updated": "1996-01-19T12:43:01.000Z" } ], "analyses": { "keywords": [ "light mesons", "heavy mesons", "radiative decays", "semi-leptonic", "relativistic spin structure" ], "tags": [ "journal article" ], "note": { "typesetting": "TeX", "pages": 0, "language": "en", "license": "arXiv", "status": "editable", "inspire": 403947 } } }