Strange hadron collectivity in pPb and PbPb collisions

The CMS collaboration cms-publication-committee-chair@cern.ch; The CMS collaboration cms-publication-committee-chair@cern.ch

doi:10.1007/JHEP05(2023)007

Strange hadron collectivity in pPb and PbPb collisions

The CMS collaboration cms-publication-committee-chair@cern.ch
, The CMS collaboration cms-publication-committee-chair@cern.ch

University of Trento
CERN
A. Alikhanian Yerevan Institute of Physics
Yerevan State University
Austrian Academy of Sciences
TU Wien
University of Antwerp
Arab Academy for Science, Technology and Maritime Transport
Université libre de Bruxelles
Vrije Universiteit Brussel
Centro Brasileiro de Pesquisas Físicas

Research output: Contribution to journal › Article › peer-review

8 Citations (Scopus)

Abstract

The collective behavior of K_S⁰ and Λ/Λ¯ strange hadrons is studied by measuring the elliptic azimuthal anisotropy (v₂) using the scalar-product and multiparticle correlation 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.

Original language	English
Article number	7
Journal	Journal of High Energy Physics
Volume	2023
Issue number	5
DOIs	https://doi.org/10.1007/JHEP05(2023)007
Publication status	Published - May 2023
Externally published	Yes

Keywords

Collective Flow
Hadron-Hadron Scattering

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10.1007/JHEP05(2023)007

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@article{d12df98357a346408e88ca3e290ee4c2,

title = "Strange hadron collectivity in pPb and PbPb collisions",

abstract = "The collective behavior of KS0 and Λ/Λ¯ strange hadrons is studied by measuring the elliptic azimuthal anisotropy (v2) using the scalar-product and multiparticle correlation methods. Proton-lead (pPb) collisions at a nucleon-nucleon center-of-mass energy sNN = 8.16 TeV and lead-lead (PbPb) collisions at sNN = 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.",

keywords = "Collective Flow, Hadron-Hadron Scattering",

author = "\{The CMS collaboration cms-publication-committee-chair@cern.ch\} and \{The CMS collaboration cms-publication-committee-chair@cern.ch\} and A. Tumasyan and W. Adam and Andrejkovic, \{J. W.\} and T. Bergauer and S. Chatterjee and M. Dragicevic and \{Escalante Del Valle\}, A. and R. Fr{\"u}hwirth and M. Jeitler and N. Krammer and L. Lechner and D. Liko and I. Mikulec and P. Paulitsch and Pitters, \{F. M.\} and J. Schieck and R. Sch{\"o}fbeck and D. Schwarz and S. Templ and W. Waltenberger and Wulz, \{C. E.\} and Darwish, \{M. R.\} and \{De Wolf\}, \{E. A.\} and T. Janssen and T. Kello and A. Lelek and \{Rejeb Sfar\}, H. and \{Van Mechelen\}, P. and \{Van Putte\}, S. and \{Van Remortel\}, N. and F. Blekman and Bols, \{E. S.\} and J. D{\textquoteright}Hondt and M. Delcourt and \{El Faham\}, H. and S. Lowette and S. Moortgat and A. Morton and D. M{\"u}ller and Sahasransu, \{A. R.\} and S. Tavernier and \{Van Doninck\}, W. and \{Van Mulders\}, P. and D. Beghin and B. Bilin and B. Clerbaux and \{De Lentdecker\}, G. and L. Favart and A. Grebenyuk and A. Moraes",

note = "Publisher Copyright: {\textcopyright} The Author(s) 2023.",

year = "2023",

month = may,

doi = "10.1007/JHEP05(2023)007",

language = "English",

volume = "2023",

journal = "Journal of High Energy Physics",

issn = "1029-8479",

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TY - JOUR

T1 - Strange hadron collectivity in pPb and PbPb collisions

AU - The CMS collaboration cms-publication-committee-chair@cern.ch

AU - Tumasyan, A.

AU - Adam, W.

AU - Andrejkovic, J. W.

AU - Bergauer, T.

AU - Chatterjee, S.

AU - Dragicevic, M.

AU - Escalante Del Valle, A.

AU - Frühwirth, R.

AU - Jeitler, M.

AU - Krammer, N.

AU - Lechner, L.

AU - Liko, D.

AU - Mikulec, I.

AU - Paulitsch, P.

AU - Pitters, F. M.

AU - Schieck, J.

AU - Schöfbeck, R.

AU - Schwarz, D.

AU - Templ, S.

AU - Waltenberger, W.

AU - Wulz, C. E.

AU - Darwish, M. R.

AU - De Wolf, E. A.

AU - Janssen, T.

AU - Kello, T.

AU - Lelek, A.

AU - Rejeb Sfar, H.

AU - Van Mechelen, P.

AU - Van Putte, S.

AU - Van Remortel, N.

AU - Blekman, F.

AU - Bols, E. S.

AU - D’Hondt, J.

AU - Delcourt, M.

AU - El Faham, H.

AU - Lowette, S.

AU - Moortgat, S.

AU - Morton, A.

AU - Müller, D.

AU - Sahasransu, A. R.

AU - Tavernier, S.

AU - Van Doninck, W.

AU - Van Mulders, P.

AU - Beghin, D.

AU - Bilin, B.

AU - Clerbaux, B.

AU - De Lentdecker, G.

AU - Favart, L.

AU - Grebenyuk, A.

AU - Moraes, A.

PY - 2023/5

Y1 - 2023/5

N2 - The collective behavior of KS0 and Λ/Λ¯ strange hadrons is studied by measuring the elliptic azimuthal anisotropy (v2) using the scalar-product and multiparticle correlation methods. Proton-lead (pPb) collisions at a nucleon-nucleon center-of-mass energy sNN = 8.16 TeV and lead-lead (PbPb) collisions at sNN = 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.

AB - The collective behavior of KS0 and Λ/Λ¯ strange hadrons is studied by measuring the elliptic azimuthal anisotropy (v2) using the scalar-product and multiparticle correlation methods. Proton-lead (pPb) collisions at a nucleon-nucleon center-of-mass energy sNN = 8.16 TeV and lead-lead (PbPb) collisions at sNN = 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.

KW - Collective Flow

KW - Hadron-Hadron Scattering

UR - https://www.scopus.com/pages/publications/85166952415

U2 - 10.1007/JHEP05(2023)007

DO - 10.1007/JHEP05(2023)007

M3 - Article

AN - SCOPUS:85166952415

SN - 1029-8479

VL - 2023

JO - Journal of High Energy Physics

JF - Journal of High Energy Physics

IS - 5

M1 - 7

ER -

Strange hadron collectivity in pPb and PbPb collisions

Abstract

Keywords

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