dorsal/arxiv
View SchemaParticle Interferometry: New Theoretical Results
| Authors | Ulrich Heinz |
|---|---|
| Categories | |
| ArXiv ID | nucl-th/9710065 |
| URL | https://arxiv.org/abs/nucl-th/9710065 |
Abstract
By measuring hadronic single-particle spectra and two-particle correlations in heavy-ion collisions, the size and dynamical state of the collision fireball at freeze-out can be reconstructed. I discuss the relevant theoretical methods and their limitations. By applying the formalism to recent pion correlation data from Pb+Pb collisions at CERN we demonstrate that the collision zone has undergone strong transverse growth before freeze-out (by a factor 2-3 in each direction), and that it expands both longitudinally and transversally. From the thermal and flow energy density at freeze-out the energy density at the onset of transverse expansion can be estimated from conservation laws. It comfortably exceeds the critical value for the transition to color deconfined matter.
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"abstract": "By measuring hadronic single-particle spectra and two-particle correlations\nin heavy-ion collisions, the size and dynamical state of the collision fireball\nat freeze-out can be reconstructed. I discuss the relevant theoretical methods\nand their limitations. By applying the formalism to recent pion correlation\ndata from Pb+Pb collisions at CERN we demonstrate that the collision zone has\nundergone strong transverse growth before freeze-out (by a factor 2-3 in each\ndirection), and that it expands both longitudinally and transversally. From the\nthermal and flow energy density at freeze-out the energy density at the onset\nof transverse expansion can be estimated from conservation laws. It comfortably\nexceeds the critical value for the transition to color deconfined matter.",
"arxiv_id": "nucl-th/9710065",
"authors": [
"Ulrich Heinz"
],
"categories": [
"nucl-th"
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"title": "Particle Interferometry: New Theoretical Results",
"url": "https://arxiv.org/abs/nucl-th/9710065"
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