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Re-hardening of hadron transverse mass spectra in relativistic heavy-ion collisions |
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| Authors: | P. K. Sahu N. Otuka M. Isse Y. Nara A. Ohnishi |
| Affiliation: | 1. Institute of Physics, Sachivalaya Marg, 751 005, Bhubaneswar, India 2. Division of Physics, Graduate School of Science, Hokkaido University, 060-0810, Sapporo, Japan 3. Advanced Science Research Center, Japan Atomic Energy Research Institute, Tokai, 319-11, Ibaraki, Japan 4. Institut für Theoretische Physik, Johann Wolfgang Goethe-Universit?t, Robert-Mayer-Str.10, 60325, Frankfurt am Main, Germany |
| Abstract: | We analyze the spectra of pions and protons in heavy-ion collisions at relativistic energies from 2 A GeV to 65+65 A GeV by using a jet-implemented hadron-string cascade model. In this energy region, hadron transverse mass spectra first show softening until SPS energies, and re-hardening may emerge at RHIC energies. Since hadronic matter is expected to show only softening at higher energy densities, this re-hardening of spectra can be interpreted as a good signature of the quark-gluon plasma formation |
| Keywords: | Relativistic heavy-ion collisions hadron spectra |
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