2020 Impact factor 3.043
Hadrons and Nuclei
7, 287-291

Matter-induced $\omega\to\pi\pi$ decay

W. Broniowski1 - W. Florkowski1 - B. Hiller2

1 H. Niewodniczanski Institute of Nuclear Physics, 31342 Kraków, Poland ()
2 Center for Theoretical Physics, University of Coimbra, 3004 516 Coimbra, Portugal ()
broniows@solaris.ifj.edu.pl, florkows@solaris.ifj.edu.pl, brigitte@malaposta.fis.uc.pt

Received: 7 June 1999 / Revised version: 14 October 1999 Communicated by W. Weise

Abstract
We calculate the width for the $\omega\to\pi\pi$ decay in nuclear matter in a hadronic model including mesons, nucleons and $\Delta$isobars. We find a substantial width of the longitudinally polarized $\omega$ modes, reaching $\sim 100$MeV for mesons moving suitably fast with respect to the nuclear medium.

PACS
25.75.Dw relativistic heavy-ion collisions - 21.65.+f nuclear matter - 14.40.-n mesons


Copyright Società Italiana di Fisica, Springer-Verlag 2000