Fe b 20 04 Energy dependence of transverse mass spectra of kaons produced in p + p and p + p interactions . A compilation

The data on mT spectra of K 0 S , K + and K− mesons produced in all inelastic p+p and p+p interactions in the energy range √ sNN = 4.7 − 1800 GeV are compiled and analyzed. The spectra are parameterized by a single exponential function, dN mT dmT = C · e −mT /T , and the inverse slope parameter T is the main object of study. The T parameter is found to be similar for K s , K + and K− mesons. It increases monotonically with collision energy from T ≈ 130 MeV at √ sNN = 4.7 GeV to T ≈ 220 MeV at √ sNN = 1800 GeV. The T parameter measured in p+p(p) interactions is significantly lower than the corresponding parameter obtained for central Pb+Pb collisions at all studied energies. Also the shape of the energy dependence of T is different for central Pb+Pb collisions and p+p(p) interactions.