Ref HAL: in2p3-00125038_v1
Ref Arxiv: hep-ph/0604041
DOI: 10.1103/PhysRevD.73.097301
Ref. & Cit.: NASA ADS
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14 citations
Résumé:

In a previous paper we have established that for any two-body process involving even numbers of transverse vector bosons and gauginos, the dominant asymptotic amplitudes obey helicity conservation (HC); i.e. the sum of the helicities of the two incoming particles equals to the sum of the helicities of the two outgoing ones. This HC has been proved to all orders in MSSM, provided $(s, |t|,|u|)$ are much larger than all masses in the model; but only to leading 1-loop logarithmic order in SM. In the present addendum, the validity of HC is extended to all two-body processes. Renormalizability is crucial for the HC validity, while all known anomalous couplings violate it.

Commentaires: 6 pages, no figures, version to appear in Physical Review D