Chemical potentials of light flavor quarks from yield ratios of negative to positive particles in Au+Au collisions at RHIC

Ya-Qin Gao, Hai-Ling Lao, Fu-Hu Liu

The transverse momentum spectra of ${\pi }^{-}$, ${\pi }^{+}$, $K^{-}$, $K^{+}$, $\bar{p}$, and $p$ produced in Au+Au collisions at center-of-mass energy $\sqrt{s_{NN}}=7.7$, 11.5, 19.6, 27,…