Multiplicity dependence of (multi-)strange hadron production in proton-proton collisions at √s = 13 TeV
(2020) In European Physical Journal C 80(2).- 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 KS0, 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... (More)
- 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 KS0, 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. © 2020, CERN for the benefit of the ALICE collaboration. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/65bded5e-0de2-4b15-a494-7550718eee16
- author
- author collaboration
- organization
- publishing date
- 2020
- type
- Contribution to journal
- publication status
- published
- subject
- in
- European Physical Journal C
- volume
- 80
- issue
- 2
- article number
- 167
- publisher
- Springer
- external identifiers
-
- scopus:85097330034
- ISSN
- 1434-6044
- DOI
- 10.1140/epjc/s10052-020-7673-8
- language
- English
- LU publication?
- yes
- id
- 65bded5e-0de2-4b15-a494-7550718eee16
- date added to LUP
- 2022-04-05 17:31:36
- date last changed
- 2023-04-02 22:38:52
@article{65bded5e-0de2-4b15-a494-7550718eee16, 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 KS0, 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. © 2020, CERN for the benefit of the ALICE collaboration.}}, author = {{S., Acharya and Adolfsson, J. and Christiansen, P. and Matonoha, O. and Nassirpour, A. and Oskarsson, A. and Richert, T. and Rueda, Oscar M and Silvermyr, D. and Stenlund, E. and N., Zurlo}}, issn = {{1434-6044}}, language = {{eng}}, number = {{2}}, publisher = {{Springer}}, series = {{European Physical Journal C}}, title = {{Multiplicity dependence of (multi-)strange hadron production in proton-proton collisions at √s = 13 TeV}}, url = {{http://dx.doi.org/10.1140/epjc/s10052-020-7673-8}}, doi = {{10.1140/epjc/s10052-020-7673-8}}, volume = {{80}}, year = {{2020}}, }