Abstract
Two-photon decays of vector mesons and dilepton decays of scalar mesons, which are forbidden in vacuum and can occur in dense baryonic matter due to the explicit violation of Lorentz symmetry, are described within a quark model of the Nambu–Jona-Lasinio type. The temperature and chemical potential dependence of these processes is investigated. It is found that their contribution to the production of photons and leptons in heavy-ion collisions is enhanced near the conditions corresponding to the restoration of chiral symmetry. Moreover, in the case of the a0-meson and especially the ρ-meson, a resonant behaviour (an additional amplification) is observed due to the degeneration of ρ and a0 masses when hot hadron matter approaches a chirally symmetric phase.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callMore From: Journal of Physics G: Nuclear and Particle Physics
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
