Radiative Corrections to W and Quark Propagators in the Resonance Region

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dc.creatorPassera, M.
dc.creatorSirlin, A.
dc.date1998-07-02
dc.date.accessioned2026-07-07T04:04:13Z
dc.date.available2026-07-07T04:04:13Z
dc.descriptionIt is shown that conventional mass renormalization, when applied to photonic or gluonic corrections to unstable particle propagators, leads to non-convergent series in the resonance region. A solution of this problem, based on the concepts of pole mass and width, is presented. In contrast with the Z case, the conventional on-shell definition of mass for W bosons and unstable quarks contains an unbounded gauge dependence in next-to-leading order. The on-shell and pole definitions of width are shown to coincide if terms of O(Γ^2) and higher are neglected, but not otherwise.
dc.description16 pages, 7 figures, LaTeX. Uses epsfig. Talk given at Zeuthen Workshop on Elementary Particle Theory: Loops and Legs in Gauge Theories, Rheinsberg, Germany, 19-24 Apr 1998
dc.identifierhttps://arxiv.org/abs/hep-ph/9807218
dc.identifierhttp://arxiv.org/abs/hep-ph/9807218
dc.identifierActa Phys.Polon. B29 (1998) 2901-2915
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/47996
dc.subjectHigh Energy Physics - Phenomenology
dc.titleRadiative Corrections to W and Quark Propagators in the Resonance Region
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