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Open Physics

formerly Central European Journal of Physics

Editor-in-Chief: Seidel, Sally

Managing Editor: Lesna-Szreter, Paulina


IMPACT FACTOR 2017: 0.755
5-year IMPACT FACTOR: 0.820

CiteScore 2017: 0.83

SCImago Journal Rank (SJR) 2017: 0.241
Source Normalized Impact per Paper (SNIP) 2017: 0.537

ICV 2017: 162.45

Open Access
Online
ISSN
2391-5471
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Volume 10, Issue 6

Issues

Volume 13 (2015)

Di-lepton production in heavy-ion collisions and the QCD phase diagram

Yifei Zhang / Haojie Xu / Wangmei Zha / Qun Wang
Published Online: 2012-12-04 | DOI: https://doi.org/10.2478/s11534-012-0096-x

Abstract

We reproduce di-electron spectra in the region of 0 < m e+e < 4 GeV in both minimum bias and central Au+Au collisions at $\sqrt {s_{NN} } $ = 200 GeV measured by the STAR experiment. A cocktail simulation, incorporating STAR acceptance and detector responses, is able to describe the “enhancement” of the low mass region by including an in-medium modification of vector mesons and a thermal di-lepton calculation. We also predict the di-lepton mass spectra in RHIC lower energies via an extrapolation method. The evolution of Di-lepton mass spectra, effective temperature, and possible medium modifications versus colliding energies are studied to explore the QCD phase diagram.

Keywords: di-lepton; heavy-ion collisions; QCD phase diagram

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About the article

Published Online: 2012-12-04

Published in Print: 2012-12-01


Citation Information: Open Physics, Volume 10, Issue 6, Pages 1352–1356, ISSN (Online) 2391-5471, DOI: https://doi.org/10.2478/s11534-012-0096-x.

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© 2012 Versita Warsaw. This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License. BY-NC-ND 3.0

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