Journal Title
Title of Journal: Z Phys C Particles and Fields
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Abbravation: Zeitschrift für Physik C Particles and Fields
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Publisher
Springer-Verlag
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Authors: M Hentschel B Kämpfer O P Pavlenko K Redlich G Soff
Publish Date: 2014/04/01
Volume: 75, Issue: 2, Pages: 333-339
Abstract
Diphoton radiation off strongly interacting matter resulting from ultrarelativistic heavyion collisions is estimated for SPS and RHIC conditions At SPS energies the thermal diphoton signal competes strongly with the Drell — Yan like background For RHIC energies we find that radiation from initially undersaturated but gluonrich deconfined matter overwhelms the hadron gas at invariant mass M 1 GeV the Drell — Yan like diphotons dominate at M 25 GeV Due to this the socalled M⊥ scaling is approximately obtained in a narrow window and can serve as additional tool for discriminating radiation from quarkgluon matter
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