Gauge-invariant 3-boson vertices and their ward identities in the standard model
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# Gauge-invariant 3-boson vertices and their ward identities in the standard model

 dc.contributor.author Papavassiliou, Joannis dc.contributor.author Philippides, Kostas dc.date.accessioned 2015-04-10T07:59:27Z dc.date.available 2015-04-10T07:59:27Z dc.date.issued 1995 dc.identifier.uri http://hdl.handle.net/10550/42984 dc.description.abstract In the context of the Standard Model we extend the S--matrix pinch technique for non--conserved currents to the case of three boson vertices. We outline in detail how effective gauge invariant three boson vertices can be constructed, with all three incoming momenta {\it off--shell}. Explicit closed expressions for the vertices γW−W+, ZW−W+, and χW−W+ are reported. The three boson vertices so constructed satisfy naive QED--like Ward identities which relate them to the gauge invariant gauge boson self--energies previously constructed by the same method. The derivation of the aforementioned Ward identities relies on the sole requirement of complete gauge invariance of the S--matrix element considered; in particular, no knowledge of the explicit closed form of the three boson vertices involved is necessary.The validity of one of these Ward identities is demonstrated explicitly, through a detailed diagrammatic one-loop analysis, in the context of three different gauges. dc.language.iso eng dc.relation.ispartof Physical Review D, 1995, vol. 52, num. 4, p. 2355-2378 dc.rights.uri info:eu-repo/semantics/openAccess dc.source Papavassiliou, Joannis Philippides, Kostas 1995 Gauge-invariant 3-boson vertices and their ward identities in the standard model Physical Review D 52 4 2355 2378 dc.subject Física dc.title Gauge-invariant 3-boson vertices and their ward identities in the standard model dc.type info:eu-repo/semantics/article dc.date.updated 2015-04-10T07:59:27Z dc.identifier.doi http://dx.doi.org/10.1103/PhysRevD.52.2355 dc.identifier.idgrec 091126

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