Multiplicity dependence of K*(892)⁰ and φ(1020) production in pp collisions at √s = 13 TeV

Collaboration, A. and , (2019) Multiplicity dependence of K*(892)⁰ and φ(1020) production in pp collisions at √s = 13 TeV. arXiv, (doi: 10.48550/arXiv.1910.14397)

Abstract

Measurements of identified hadrons as a function of the charged-particle multiplicity in pp collisions enable a search for the onset of collective effects in small collision systems. With such measurements, it is possible to study the mechanisms that determine the shapes of hadron transverse momentum (pT) spectra, to search for possible modifications of the yields of short-lived hadronic resonances due to scattering effects in the hadron-gas phase, and to investigate different explanations for the multiplicity evolution of strangeness production provided by phenomenological models. In this paper, these topics are addressed through measurements of the K∗(892)0 and ϕ(1020) mesons at midrapidity in pp collisions at s√ = 13 TeV as a function of the charged-particle multiplicity. The results include the pT spectra, pT-integrated yields, mean transverse momenta, and the ratios of the yields of these resonances to those of longer-lived hadrons. Comparisons with results from other collision systems and energies, as well as predictions from phenomenological models, are also discussed.

• Item Type: Articles
• Status: Published
• Refereed: Yes
• Glasgow Author(s) Enlighten ID: Jevons, Mr Oliver
• Authors: Collaboration, A., and ,
• College/School: College of Science and Engineering > School of Physics and Astronomy
• Journal Name: arXiv
• Copyright Holders: Copyright © 2019 CERN for the benefit of the ALICE Collaboration
• First Published: First published in arXiv 31 October 2019
• Publisher Policy: Reproduced under a creative commons licence