Two-pion annihilation into e+e−pairs in relativistic non-linear models
| hal.structure.identifier | Centre d'Etudes Nucléaires de Bordeaux Gradignan [CENBG] | |
| dc.contributor.author | PASTOR, J. | |
| hal.structure.identifier | Centre d'Etudes Nucléaires de Bordeaux Gradignan [CENBG] | |
| dc.contributor.author | CAILLON, J.C. | |
| hal.structure.identifier | Centre d'Etudes Nucléaires de Bordeaux Gradignan [CENBG] | |
| dc.contributor.author | LABARSOUQUE, J. | |
| dc.date.issued | 2005 | |
| dc.identifier.issn | 0375-9474 | |
| dc.description.abstractEn | We have studied the $\pi^{+}\pi^{-} \rightarrow e^+e^-$ process in dense and hot nuclear matter using relativistic non-linear models taking into account all scalar–vector coupling terms up to fourth order in the Lagrangian. We have determined the influence of non-linear terms on the cross section and dilepton production rate in both isoscalar and isovector channels. For one of the models considered, we have found an enhancement of the $\pi^+\pi^- \rightarrow \rho \rightarrow {e^+e^-}$ dilepton production rate in the low invariant mass region as required by the experimental data. | |
| dc.language.iso | en | |
| dc.publisher | Elsevier | |
| dc.subject.en | Nuclear matter | |
| dc.subject.en | Relativistic hadronic models | |
| dc.subject.en | Dilepton production rate | |
| dc.title.en | Two-pion annihilation into e+e−pairs in relativistic non-linear models | |
| dc.type | Article de revue | |
| dc.identifier.doi | 10.1016/j.nuclphysa.2005.04.016 | |
| dc.subject.hal | Physique [physics]/Physique Nucléaire Théorique [nucl-th] | |
| bordeaux.journal | Nuclear Physics A | |
| bordeaux.page | 456-475 | |
| bordeaux.volume | 757 | |
| bordeaux.peerReviewed | oui | |
| hal.identifier | in2p3-00024287 | |
| hal.version | 1 | |
| hal.popular | non | |
| hal.audience | Non spécifiée | |
| hal.origin.link | https://hal.archives-ouvertes.fr//in2p3-00024287v1 | |
| bordeaux.COinS | ctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Nuclear%20Physics%20A&rft.date=2005&rft.volume=757&rft.spage=456-475&rft.epage=456-475&rft.eissn=0375-9474&rft.issn=0375-9474&rft.au=PASTOR,%20J.&CAILLON,%20J.C.&LABARSOUQUE,%20J.&rft.genre=article |
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