dorsal/arxiv
View SchemaHBT search for new states of matter in A+A collisions
| Authors | S. V. Akkelin, Yu. M. Sinyukov |
|---|---|
| Categories | |
| ArXiv ID | nucl-th/0505045 |
| URL | https://arxiv.org/abs/nucl-th/0505045 |
| DOI | 10.1103/PhysRevC.73.034908 |
| Journal | Phys.Rev.C73:034908,2006 |
Abstract
A method allowing studies of the hadronic matter at the early evolution stage in A+A collisions is developed. It is based on an interferometry analysis of approximately conserved values such as the averaged phase-space density (APSD) and the specific entropy of thermal pions. The plateau found in the APSD behavior vs collision energy at SPS is associated, apparently, with the deconfinement phase transition at low SPS energies; a saturation of this quantity at the RHIC energies indicates the limiting Hagedorn temperature for hadronic matter. It is shown that if the cubic power of effective temperature of pion transverse spectra grows with energy similarly to the rapidity density (that is roughly consistent with experimental data), then the interferometry volume is inverse proportional to the pion APSD that is about a constant because of limiting Hagedorn temperature. This sheds light on the HBT puzzle.
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"abstract": "A method allowing studies of the hadronic matter at the early evolution stage\nin A+A collisions is developed. It is based on an interferometry analysis of\napproximately conserved values such as the averaged phase-space density (APSD)\nand the specific entropy of thermal pions. The plateau found in the APSD\nbehavior vs collision energy at SPS is associated, apparently, with the\ndeconfinement phase transition at low SPS energies; a saturation of this\nquantity at the RHIC energies indicates the limiting Hagedorn temperature for\nhadronic matter. It is shown that if the cubic power of effective temperature\nof pion transverse spectra grows with energy similarly to the rapidity density\n(that is roughly consistent with experimental data), then the interferometry\nvolume is inverse proportional to the pion APSD that is about a constant\nbecause of limiting Hagedorn temperature. This sheds light on the HBT puzzle.",
"arxiv_id": "nucl-th/0505045",
"authors": [
"S. V. Akkelin",
"Yu. M. Sinyukov"
],
"categories": [
"nucl-th",
"hep-ph",
"nucl-ex"
],
"doi": "10.1103/PhysRevC.73.034908",
"journal_ref": "Phys.Rev.C73:034908,2006",
"title": "HBT search for new states of matter in A+A collisions",
"url": "https://arxiv.org/abs/nucl-th/0505045"
},
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