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The width of the omega meson in the nuclear medium

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The width of the omega meson in the nuclear medium

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dc.contributor.author Ramos Gómez, Àngels
dc.contributor.author Tolós Rigueiro, Laura
dc.contributor.author Molina Peralta, Raquel
dc.contributor.author Oset Báguena, Eulogio
dc.date.accessioned 2014-02-17T13:45:14Z
dc.date.available 2014-02-17T13:45:14Z
dc.date.issued 2013
dc.identifier.citation Ramos, A. Tolos, L. Molina, R. Oset Báguena, Eulogio 2013 The width of the omega meson in the nuclear medium European Physical Journal A 49 11 148
dc.identifier.uri http://hdl.handle.net/10550/32996
dc.description.abstract We evaluate the width of the omega meson in nuclear matter. We consider the free decay mode of the omega into three pions, which is dominated by rho IEuro decay, and replace the rho and pi propagators by their medium-modified ones. We also take into account the quasielastic and inelastic processes induced by a vector-baryon interaction dominated by vector meson exchange, as well as the contributions coming from the mechanism with medium-modified K , propagators. We obtain a substantial increase of the omega width in the medium, reaching a value of 121 +/- 10 MeV at normal nuclear matter density for an omega at rest, which comes mainly from omega N -> pi pi N, omega NN -> pi NN processes associated to the dominant omega -> rho IEuro decay mode. The value of the width increases moderately with momentum, reaching values of around 200MeV at 600MeV/c.
dc.relation.ispartof European Physical Journal A, 2013, vol. 49, num. 11, p. 148
dc.subject Física
dc.title The width of the omega meson in the nuclear medium
dc.type journal article es_ES
dc.date.updated 2014-02-17T13:45:14Z
dc.identifier.doi 10.1140/epja/i2013-13148-x
dc.identifier.idgrec 093168
dc.rights.accessRights open access es_ES
dc.identifier.url 10.1140/epja/i2013-13148-x

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