Indications for a Critical End Point in the Phase Diagram for Hot and Dense Nuclear Matter
Abstract
Here, excitation functions for the Gaussian emission source radii difference ( ) obtained from two-pion interferometry measurements in ( ) and ( ) collisions are reported on for a broad range of collision centralities. The observed nonmonotonic excitation functions validate the finite-size scaling patterns expected for the deconfinement phase transition and the critical end point (CEP), in the temperature versus baryon chemical potential ( ) plane of the nuclear matter phase diagram. A finite-size scaling (FSS) analysis of these data suggests a second order phase transition with the estimates and for the location of the critical end point. The critical exponents ( and ) extracted via the same FSS analysis place this CEP in the 3D Ising model universality class.
- Authors:
-
- Stony Brook Univ., NY (United States)
- Publication Date:
- Research Org.:
- Stony Brook Univ., NY (United States); State Univ. of New York (SUNY), Syracuse, NY (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), Nuclear Physics (NP)
- OSTI Identifier:
- 1598592
- Alternate Identifier(s):
- OSTI ID: 1179322
- Grant/Contract Number:
- FG02-87ER40331
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Physical Review Letters
- Additional Journal Information:
- Journal Volume: 114; Journal Issue: 14; Journal ID: ISSN 0031-9007
- Publisher:
- American Physical Society (APS)
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 73 NUCLEAR PHYSICS AND RADIATION PHYSICS; Critical point
Citation Formats
Lacey, Roy A. Indications for a Critical End Point in the Phase Diagram for Hot and Dense Nuclear Matter. United States: N. p., 2015.
Web. doi:10.1103/PhysRevLett.114.142301.
Lacey, Roy A. Indications for a Critical End Point in the Phase Diagram for Hot and Dense Nuclear Matter. United States. https://doi.org/10.1103/PhysRevLett.114.142301
Lacey, Roy A. Mon .
"Indications for a Critical End Point in the Phase Diagram for Hot and Dense Nuclear Matter". United States. https://doi.org/10.1103/PhysRevLett.114.142301. https://www.osti.gov/servlets/purl/1598592.
@article{osti_1598592,
title = {Indications for a Critical End Point in the Phase Diagram for Hot and Dense Nuclear Matter},
author = {Lacey, Roy A.},
abstractNote = {Here, excitation functions for the Gaussian emission source radii difference (Rout2-Rside2) obtained from two-pion interferometry measurements in Au+Au (sNN=7.7–200GeV) and Pb+Pb (sNN=2.76TeV) collisions are reported on for a broad range of collision centralities. The observed nonmonotonic excitation functions validate the finite-size scaling patterns expected for the deconfinement phase transition and the critical end point (CEP), in the temperature versus baryon chemical potential (T,μB) plane of the nuclear matter phase diagram. A finite-size scaling (FSS) analysis of these data suggests a second order phase transition with the estimates Tcep~165MeV and μBcep~95MeV for the location of the critical end point. The critical exponents (ν≈0.66 and γ≈1.2) extracted via the same FSS analysis place this CEP in the 3D Ising model universality class.},
doi = {10.1103/PhysRevLett.114.142301},
journal = {Physical Review Letters},
number = 14,
volume = 114,
place = {United States},
year = {Mon Apr 06 00:00:00 EDT 2015},
month = {Mon Apr 06 00:00:00 EDT 2015}
}
Web of Science
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