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Hadron Formation Time and Dilepton Mass Spectra in Heavy Ion Collisions

Peter Filip·Jan Pisut
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Abstract

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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Peter Filip, Jan Pisut. 1997-05-28. Hadron Formation Time and Dilepton Mass Spectra in Heavy Ion Collisions. https://doi.org/10.1016/s0370-2693(97)01019-8

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