Mass Shift and Width Broadening of Rho-Mesons Produced in Heavy Ion Collisions

Details Mass Shift and Width Broadening of Rho-Mesons Produced in Heavy Ion Collisions Mass Shift and Width Broadening of Rho-Mesons Produced in Heavy Ion Collisions

1998-07-27

arxiv.org/abs/nucl-th/9807072v1

Eur.Phys.J. A3 (1998) 381-387

Physics

Nuclear Physics

Nuclear Theory

13 pages, 4 figures

Scientific paper

10.1007/s100500050193

The mass shift and width broadening of rho-mesons produced in heavy ion collisions is estimated using general formulae which relate the in-medium mass shift of a particle to the real part of the forward scattering amplitude of this particle on constituents of the medium and the width broadening to the corresponding cross section. It is found that the mass increases by some tens of MeV but, more importantly, the width becomes large, increasing by several hundred MeV at beam energies of a few GeV per nucleon and by twice that amount at beam energies of about a hundred GeV per nucleon.

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