https://doi.org/10.1051/epjconf/202225913014
Low-pT μ+μ− pair production in Au+Au collisions at √SNN = 200 GeV at STAR
1 Department of Modern Physics, University of Science and Technology of China, Hefei 230026, China
2 State Key Laboratory of Particle Detection and Electronics, University of Science and Technology of China, Hefei 230026, China
* e-mail: zj1994@mail.ustc.edu.cn
Published online: 1 February 2022
We report the measurements of μ+μ− pair production for pT < 0.10 GeV/c in 40-80% Au+Au collisions at √SNN = 200 GeV at STAR. A significant enhancement with respect to the hadronic cocktail is observed. The pT2 and ∆ϕ distributions of the excess yields are also reported and compared with model calculations. The EPA-QED calculations can describe the data very well within uncertainties.
© The Authors, published by EDP Sciences, 2022
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