Hadron Formation Time and Dilepton Mass Spectra in Heavy Ion Collisions

Details Hadron Formation Time and Dilepton Mass Spectra in Heavy Ion Collisions Hadron Formation Time and Dilepton Mass Spectra in Heavy Ion Collisions

1997-05-28

arxiv.org/abs/nucl-th/9705051v1

Phys.Lett. B411 (1997) 187-192

Physics

Nuclear Physics

Nuclear Theory

10 pages, Revtex, 2 figures

Scientific paper

10.1016/S0370-2693(97)01019-8

We point out that formation time of pions produced in heavy ion collisions modifies the mass spectrum of dileptons produced via pipi -> ee annihilation. Increasing formation time enhances the production of dileptons with lower masses. The effect offers an explanation of a part of the enhanced production of dileptons below the rho-meson mass as observed by the CERES and HELIOS Collaborations at the CERN SPS.

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