Strange hadron collectivity in pPb and PbPb collisions
Document Type
Article
Publication Date
5-1-2023
Abstract
The collective behavior of K-S(0) and Lambda/(Lambda) over bar strange hadrons is studied by measuring the elliptic azimuthal anisotropy (v(2)) using the scalar-product and multiparticle correlation methods. Proton-lead (pPb) collisions at a nucleon-nucleon center-of-mass energy root s(NN) = 8.16 TeV and lead-lead (PbPb) collisions at root 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 v(2) 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.
Keywords
Collective Flow, Hadron-Hadron Scattering
Publication Title
Journal of High Energy Physics
Recommended Citation
Tumasyan, A.; Adam, W.; Andrejkovic, J. W.; Bergauer, T.; Chatterjee, S.; Dragicevic, M.; Del Valle, A. Escalante; Fruehwirth, R.; Jeitler, M.; Krammer, N.; Lechner, L.; Liko, D.; Mikulec, I.; Paulitsch, P.; Pitters, F. M.; Schieck, J.; Schoefbeck, R.; Schwarz, D.; Templ, S.; Waltenberger, W.; Wulz, C. -E.; Darwish, M. R.; De Wolf, E. A.; Janssen, T.; Kello, T.; Lelek, A.; Sfar, H. Rejeb; Van Mechelen, P.; Van Putte, S.; and Van Remortel, N., "Strange hadron collectivity in pPb and PbPb collisions" (2023). Research Publications (2021 to 2025). 3109.
https://knova.um.edu.my/research_publications_2021_2025/3109
Divisions
universiti
Issue
5
Publisher
Springer
Publisher Location
ONE NEW YORK PLAZA, SUITE 4600, NEW YORK, NY, UNITED STATES