arXiv subjects

Abhee K. Dutt-Mazumder

Publications and source records attributed to Abhee K. Dutt-Mazumder.

40 records · Page 3Linked to original sources

arXiv1996

Dilepton Yield in Heavy-Ion Collisions with Bose Enhancement of Decay Width

The excess of low invariant mass dilepton yield in heavy ion collisions arising from reduction in the rho meson mass at finite temperatures is partially suppressed because of the effect on the width of the rho meson induced by Bose enhancement, essentially due to emission of pions in a medium of the pion gas in the central rapidity region. The sensitivity of the effect on the initial temperature of the hadronic phase is also examined.

nucl-th↗

arXiv1996

Matter induced rho-omega mixing

A novel mechanism for $ρ-ω$ mixing induced by neutron-proton asymmetry in nuclear matter is uncovered and the variation of the mixing angle with the extent of asymmetry is presented.

hep-ph↗

arXiv1996

Rho Mesons in Asymmetric Nuclear Matter: A Renormalization Group Approach

The running of the $ρ\bar N N$ couplings in presence of nuclear matter is studied, and the relevant $β$-functions are shown to be different for $ρ^0$ and $ρ^+$, when the nuclear medium is asymmetric.

nucl-th↗

arXiv1995

Symmetry Breaking for Rho Meson in Neutron Matter

Qualitative changes in the collective excitation spectra of the $ρ$-meson triplet in neutron matter is studied, with particular emphasis on the breaking of the discrete $p\leftrightarrow n$ symmetry. The appearance of additional branches in the dispersion characteristics, the mass splitting among the charge states, the splitting between longitudinal and transverse modes of the $ρ^{\pm}$ mesons and the appearance of `island' modes (or loops) in the time-like region are some of the features that are exposed.

nucl-th↗