Energy dependence of transverse mass spectra of kaons produced in p+p and p+pbar interactions.A compilation

TL;DR

This paper compiles and analyzes the transverse mass spectra of kaons produced in inelastic p+p and p+pbar interactions across a wide energy range, revealing how the inverse slope parameter varies with energy and differs from heavy-ion collisions.

Contribution

It provides a comprehensive compilation and analysis of kaon transverse mass spectra in p+p and p+pbar interactions over a broad energy spectrum, highlighting differences from heavy-ion collision results.

Findings

The inverse slope parameter T increases with collision energy from ~30MeV to ~220MeV.

T is similar for K0S, K+, and K- mesons across energies.

T in p+p and p+pbar interactions is lower than in central Pb+Pb collisions at all energies.

Abstract

The data on m_T spectra of K0S K+ and K- mesons produced in all inelastic p+p and p+pbar interactions in the energy range sqrt(s)NN=4.7-1800GeV are compiled and analyzed. The spectra are parameterized by a single exponential function, dN/(m_T*dm_T)=C exp(-m_T/T), and the inverse slope parameter T is the main object of study. The T parameter is found to be similar for K0S, K+ and K- mesons. It increases monotonically with collision energy from T~30MeV at sqrt(s)NN=4.7GeV to T~220MeV at sqrt(s)NN=1800GeV. The T parameter measured in p+p and p+pbar 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(pbar) interactions.