A New Description of Transverse Momentum Spectra of Identified Particles Produced in Proton-Proton Collisions at High Energies

Figure 1

(a) The invariant cross-sections of different hadrons with given combinations and decay channels produced in collisions at 200 GeV. Different symbols represent different particles and their different decay channels in measured by the PHENIX Collaboration [19]; some of them are scaled by different factors marked in the panel. The dotted and dashed curves are our fitted results by using Eqs. (7) and (9) or (11), respectively. (b) The ratio of data to fit obtained from Eq. (7). (c) The ratio of data to fit obtained from Eq. (9) or (11).