Transverse momentum distributions of strange hadrons produced in p–p collisions at √s_NN = 200 GeV

The mid-rapidity transverse momentum spectra of strange hadrons ($K^{+},K^{-},K^{-}/K^{+},\Lambda ,\overline{\Lambda },{\Xi }^{-},{\Xi }^{+}$, and Ω) produced in p–p collisions at the highest RHIC energy √s_NN = 200 GeV have been studied using a statistical unified thermal freeze-out model. The calculated results are found to be in good agreement with the experimental data taken from STAR and BRAHMS experiments. The fits of the transverse momentum spectra to the model calculations provide the thermal freeze-out conditions in terms of the temperature and collective flow effect parameters for different particle species. The model incorporates a longitudinal and a transverse hydrodynamic flow. The rapidity distributions of kaons and their ratios are also reproduced successfully, which reveals the presence of partial nuclear transparency effects in p–p collisions at √s_NN = 200 GeV. The contributions from heavier decay resonances are also taken into account.