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

Figure 2

(a) The invariant cross-sections of photons and different leptons for a given combination of intermediate channel for collisions at 200 GeV. Different symbols represent different particles, and their production channels in different ranges measured by the PHENIX Collaboration [20–23]. The dotted and dashed curves are our fitted results by using Eqs. (7) and (9), respectively. (b) The ratio of data to fit obtained from Eq. (7). (c) The ratio of data to fit obtained from Eq. (9).