Dual gauge-fixing property of the S matrix
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Papavassiliou, Joannis; Philippides, Kostas
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Aquest document és un/a article, creat/da en: 1996
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The S-matrix is known to be independent of the gauge fixing 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 gauge fixing 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 from both. Possible phenomenological applications of this result are briefly discussed. |
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