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Effects of pion potential and nuclear symmetry energy on theπ−/π+ratio in heavy-ion collisions at beam energies around the pion production threshold

Wen-Mei Guo, Gao-Chan Yong, Hang Liu, Wei Zuo
2015 Physical Review C  

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2014 pre-print arXiv:1410.4926v1 fatcat:xgoblfcocbaeddtolhgl543tjq

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2015 accepted
arXiv:1410.4926v2 fatcat:2vb46pxv5zdrnk6zrolldvtp3i
Within the framework of the isospin-dependent Boltzmann-Uehling-Uhlenbeck(IBUU) transport model, we studied the effects of the pion potential and the symmetry energy on the pion production in the central ^197Au+^197Au collisions around the pion production threshold. It is found that the pion potential has opposite effects on the value of π^-/π^+ ratio at low and high pion energies. The effect of the pion potential on the total π^-/π^+ ratio becomes larger in heavy-ion collisions at beam
more » ... below the pion production threshold. And at beam energies below the pion production threshold, with the pion potential, the effect of the symmetry energy on the π^-/π^+ ratio becomes smaller compared with that above the pion production threshold.
doi:10.1103/physrevc.91.054616 fatcat:yaotxnnkezgnddezrw5waiqauy
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Wen-Mei Guo, Gao-Chan Yong, Hang Liu, Wei Zuo. "Effects of pion potential and nuclear symmetry energy on theπ−/π+ratio in heavy-ion collisions at beam energies around the pion production threshold." Physical Review C 91.5 (2015)