Strange hadron collectivity in pPb and PbPb collisions
File(s)JHEP05(2023)007.pdf (1.21 MB)
Published version
Author(s)
Type
Journal Article
Abstract
The collective behavior of K0S and Λ/Λ strange hadrons is studied by measuring
the elliptic azimuthal anisotropy (v2) using the scalar-product and multiparticle correla tion methods. Proton-lead (pPb) collisions at a nucleon-nucleon center-of-mass energy
√s
NN = 8.16 TeV and lead-lead (PbPb) collisions at √s
NN = 5.02 TeV collected by the CMS
experiment at the LHC are investigated. Nonflow effects in the pPb collisions are studied
by using a subevent cumulant analysis and by excluding events where a jet with transverse
momentum greater than 20 GeV is present. The strange hadron v2 values extracted in pPb
collisions via the four- and six-particle correlation method are found to be nearly identical,
suggesting the collective behavior. Comparisons of the pPb and PbPb results for both
strange hadrons and charged particles illustrate how event-by-event flow fluctuations depend
on the system size.
the elliptic azimuthal anisotropy (v2) using the scalar-product and multiparticle correla tion methods. Proton-lead (pPb) collisions at a nucleon-nucleon center-of-mass energy
√s
NN = 8.16 TeV and lead-lead (PbPb) collisions at √s
NN = 5.02 TeV collected by the CMS
experiment at the LHC are investigated. Nonflow effects in the pPb collisions are studied
by using a subevent cumulant analysis and by excluding events where a jet with transverse
momentum greater than 20 GeV is present. The strange hadron v2 values extracted in pPb
collisions via the four- and six-particle correlation method are found to be nearly identical,
suggesting the collective behavior. Comparisons of the pPb and PbPb results for both
strange hadrons and charged particles illustrate how event-by-event flow fluctuations depend
on the system size.
Date Issued
2023-05-02
Date Acceptance
2022-07-24
Citation
The Journal of High Energy Physics, 2023, 2023 (5)
ISSN
1029-8479
Publisher
SpringerOpen
Journal / Book Title
The Journal of High Energy Physics
Volume
2023
Issue
5
Copyright Statement
© 2023, The Author(s) Open Access . This article is distributed under the terms of the Creative Commons Attribution License (CC-BY 4.0), which permits any use, distribution and reproduction in any medium, provided the original author(s) and source are credited.
License URL
Identifier
https://www.webofscience.com/api/gateway?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:001022741800001&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=a2bf6146997ec60c407a63945d4e92bb
Subjects
ANISOTROPY
Collective Flow
FLOW
Hadron-Hadron Scattering
Physical Sciences
Physics
Physics, Particles & Fields
Science & Technology
Publication Status
Published
Article Number
7
Date Publish Online
2023-05-02