NAGIOS: RODERIC FUNCIONANDO

The width of the omega meson in the nuclear medium

Repositori DSpace/Manakin

Valencià Castellano

Inici
Investigació
e-prints
22 - Física
Visualitza element

IMPORTANT: Aquest repositori està en una versió antiga des del 3/12/2023. La nova instal.lació está en https://roderic.uv.es/

The width of the omega meson in the nuclear medium

Mostra el registre complet de l'element

Visualització (386.1Kb)

Ramos Gómez, Àngels; Tolós Rigueiro, Laura; Molina Peralta, Raquel; Oset Báguena, Eulogio

Aquest document és un/a article, creat/da en: 2013

Este documento está disponible también en : 10.1140/epja/i2013-13148-x

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.

Veure al catàleg Trobes