Abstract
A detailed discussion of the properties of low mass dilepton production in heavy-ion collisions is presented taking into account the Landau-Pomeranchuk suppression effect in an expanding medium. Our results are then compared with non-thermal Dalitz η-decay into dileptons.
It is shown that at high initial temperatureT∼0.9 GeV and short thermalization time π0~0.07 fm the properties of a quark-gluon plasma in heavy-ion collisions would be determined by measuring thep t spectra of low mass dilepton pairs. For lower initial temperatures one needs to subtract the background from Dalitz decays in order to extract a quark-gluon plasma signal.
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Cleymans, J., Goloviznin, V.V. & Redlich, K. The Landau-Pomeranchuk effect and soft lepton-pair production in heavy ion collisions. Z. Phys. C - Particles and Fields 59, 495–500 (1993). https://doi.org/10.1007/BF01498631
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DOI: https://doi.org/10.1007/BF01498631