Extracting kinetic freeze-out temperature and radial flow velocity from an improved Tsallis distribution Hai-Ling Lao, Fu-Hu Liu and Roy A. Lacey Eur. Phys. J. A, 53 3 (2017) 44 Published online: 06 March 2017 DOI: 10.1140/epja/i2017-12238-1