\(\pi \) , K and p Production in High Multiplicity pp Collisions at \(\sqrt{s} = \) 13 TeV
摘要
High-multiplicity proton–proton and proton–lead collisions at LHC energies exhibit similar signatures to those observed in Pb–Pb collisions (i.e., strangeness enhancement and collective expansion), that are traditionally attributed to the formation of the quark–gluon plasma. In this contribution, the measurements of \(\pi ^{\pm }\) , \(K^{\pm }\) , and p( \(\bar{p}\) ) transverse momentum spectra in the rapidity region \(|y|< \) 0.5 for high-multiplicity pp collisions at \(\sqrt{s} = \) 13 TeV with the ALICE detector will be presented. Measurements in high-multiplicity pp collisions will allow to study the system-size dependence of light-flavor particle production by extending the measurements up to the multiplicity of peripheral Pb–Pb collision. Integrated particle yields and their ratios will be presented as a function of charged particle multiplicity and compared to the expectation from QCD-based pp event generators.