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

• Authors: Yifei Zhang , Haojie Xu , Wangmei Zha , Qun Wang
• Languages of publication: EN

Abstracts

EN

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

EN

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

• Publisher: De Gruyter Open
• Journal: Open Physics
• Year: 2012
• Volume: 10
• Issue: 6
• Pages: 1352-1356

Dates

published

1 - 12 - 2012

online

4 - 12 - 2012

Contributors

author

Yifei Zhang

• University of Science and Technology of China, 96 Jinzhai Road, 230026, Hefei, Anhui, China

author

Haojie Xu

• University of Science and Technology of China, 96 Jinzhai Road, 230026, Hefei, Anhui, China

author

Wangmei Zha

• University of Science and Technology of China, 96 Jinzhai Road, 230026, Hefei, Anhui, China

author

Qun Wang

• University of Science and Technology of China, 96 Jinzhai Road, 230026, Hefei, Anhui, China

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Identifiers

DOI

10.2478/s11534-012-0096-x