Spectral Red-Shift Versus Broadening from Photon and Dilepton Spectra

Abstract

We estimate the photon and dilepton emission rates from hot hadronic matter with in-medium spectral shift and broadening of vector mesons. It is observed that both the WA98 photon data and CERES/NA45 dilepton data can be well reproduced with similar initial conditions. The freeze-out condition has been constrained by the transverse mass spectra of pions and protons measured by the NA49 collaboration. We argue that simultaneous measurement of the $p_T$ spectra of single photons as well as invariant mass distribution of dileptons is crucial to understand the in-medium spectral function of the vector mesons.

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Cited by in corpus (7)

• Low-Energy Thermal Photons from Meson-Meson Bremsstrahlung
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• Thermal Radiation from Au + Au Collisions at \sqrt{s} = 200 GEV/A Energy
• Low Mass Dilepton Rate from the Deconfined Phase
• Radial Flow from Electromagnetic Probes and Signal of Quark Gluon Plasma
• Dilepton emission rates from hot hadronic matter
• Thermal photon to dilepton ratio in ultra-relativistic heavy ion collisions