Dual gaugefixing property of the S matrix
Abstract
The S matrix is known to be independent of the gaugefixing parameter to all orders in perturbation theory. In this paper by employing the pinch technique we prove at one loop a stronger version of this independence. In particular, we show that one can use a gaugefixing parameter for the gauge bosons inside quantum loops which is different from that used for the bosons outside loops, and the S matrix is independent of both. Possible phenomenological applications of this result are briefly discussed.
 Publication:

Physical Review D
 Pub Date:
 December 1996
 DOI:
 10.1103/PhysRevD.54.6957
 arXiv:
 arXiv:hepph/9606292
 Bibcode:
 1996PhRvD..54.6957P
 Keywords:

 11.55.Bq;
 12.38.Bx;
 Analytic properties of S matrix;
 Perturbative calculations;
 High Energy Physics  Phenomenology
 EPrint:
 17 pages, Latex