Form factors and photoproduction amplitudes
نویسندگان
چکیده
We examine the use of phenomenological form factors in tree level amplitudes for meson photoproduction. Two common recipes are shown to be fundamentally incorrect. An alternate form consistent with gauge invariance and crossing symmetry is proposed. PACS numbers: 25.20.Lj, 13.60.Le, 11.40.-q, 11.80.Cr Typeset using REVTEX [email protected] [email protected]
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