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Massive Yang-Mills model and diffractive scattering

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Massive Yang-Mills model and diffractive scattering

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dc.contributor.author Forshaw, Jeffrey R.
dc.contributor.author Papavassiliou, Joannis
dc.contributor.author Parrinello, Claudio
dc.date.accessioned 2015-04-10T08:16:47Z
dc.date.available 2015-04-10T08:16:47Z
dc.date.issued 1999
dc.identifier.citation Forshaw, Jeffrey R. Papavassiliou, Joannis Parrinello, Claudio 1999 Massive Yang-Mills model and diffractive scattering Physical Review D 59 7 074008
dc.identifier.uri http://hdl.handle.net/10550/42996
dc.description.abstract We argue that the massive Yang-Mills model of Kunimasa and Goto, Slavnov, and Cornwall, in which massive gauge vector bosons are introduced in a gauge-invariant way without resorting to the Higgs mechanism, may be useful for studying diffractive scattering of strongly interacting particles. We perform in this model explicit calculations of S-matrix elements between quark states, at tree level, one loop, and two loops, and discuss issues of renormalisability and unitarity. In particular, it is shown that the S-matrix element for quark scattering is renormalisable at one-loop order and is only logarithmically non-renormalisable at two loops. The discrepancies in the ultraviolet regime between the one-loop predictions of this model and those of massless QCD are discussed in detail. Also, some of the similarities and differences between the massive Yang-Mills model and theories with a Higgs mechanism are analysed at the level of the S-matrix. Finally, we briefly discuss the high-energy behaviour of the leading-order amplitude for quark-quark elastic scattering in the diffractive region. The above analysis sets up the stage for carrying out a systematic computation of the higher order corrections to the two-gluon exchange model of the Pomeron using massive gluons inside quantum loops.
dc.language.iso eng
dc.relation.ispartof Physical Review D, 1999, vol. 59, num. 7, p. 074008
dc.subject Física
dc.title Massive Yang-Mills model and diffractive scattering
dc.type journal article es_ES
dc.date.updated 2015-04-10T08:16:47Z
dc.identifier.doi 10.1103/PhysRevD.59.074008
dc.identifier.idgrec 091138
dc.rights.accessRights open access es_ES

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