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On invariant amplitudes for the vector meson photoproduction off nucleons

✍ Scribed by M. Sewerynski

Publisher: Elsevier Science
Year: 1979
Tongue: English
Weight: 750 KB
Volume: 118
Category: Article
ISSN: 0003-4916
DOI: 10.1016/0003-4916(79)90132-5

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✦ Synopsis

And it is found that both sets lead to invariant amplitudes which are not kinematical singularity and zero free.

where the K,(p)-standard covariants carry spin-tensorial indices and are polynomial in the four-vectors p = (pl ,...,pn ) [9]. The invariant amplitudes Ai( which are functions of the independent invariants s = (a ,..., s,.,) formed from the pls, are holomorphic except on the s-space image of the p-space singularities of the functions M(p). In general, a minimal set of standard covariants, i.e., a set whose number 414

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