Multiplicity dependence of (multi-)strange hadron production in proton-proton collisions at √s=13 TeV
dc.contributor.author | Acharya, Shreyasi | pt_BR |
dc.contributor.author | Gay Ducati, Maria Beatriz | pt_BR |
dc.contributor.author | Pereira, Luis Gustavo | pt_BR |
dc.contributor.author | Pezzi, Rafael Peretti | pt_BR |
dc.contributor.author | ALICE Collaboration | pt_BR |
dc.date.accessioned | 2020-07-10T03:41:36Z | pt_BR |
dc.date.issued | 2020 | pt_BR |
dc.identifier.issn | 1434-6044 | pt_BR |
dc.identifier.uri | http://hdl.handle.net/10183/211674 | pt_BR |
dc.description.abstract | The production rates and the transverse momentum distribution of strange hadrons at mid-rapidity (|y|<0.5) are measured in proton-proton collisions at s√ = 13 TeV as a function of the charged particle multiplicity, using the ALICE detector at the LHC. The production rates of K0S, Λ, Ξ, and Ω increase with the multiplicity faster than what is reported for inclusive charged particles. The increase is found to be more pronounced for hadrons with a larger strangeness content. Possible auto-correlations between the charged particles and the strange hadrons are evaluated by measuring the event-activity with charged particle multiplicity estimators covering different pseudorapidity regions. When comparing to lower energy results, the yields of strange hadrons are found to depend only on the mid-rapidity charged particle multiplicity. Several features of the data are reproduced qualitatively by general purpose QCD Monte Carlo models that take into account the effect of densely-packed QCD strings in high multiplicity collisions. However, none of the tested models reproduce the data quantitatively. This work corroborates and extends the ALICE findings on strangeness production in proton-proton collisions at 7 TeV. | en |
dc.format.mimetype | application/pdf | pt_BR |
dc.language.iso | eng | pt_BR |
dc.relation.ispartof | The European physical journal. C, Particles and fields. Berlin. Vol. 80, no. 2 (Feb. 2020), 167, 26 p. | pt_BR |
dc.rights | Open Access | en |
dc.subject | Aceleradores de partículas | pt_BR |
dc.subject | Colisões proton-proton | pt_BR |
dc.title | Multiplicity dependence of (multi-)strange hadron production in proton-proton collisions at √s=13 TeV | pt_BR |
dc.type | Artigo de periódico | pt_BR |
dc.identifier.nrb | 001115101 | pt_BR |
dc.type.origin | Estrangeiro | pt_BR |
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