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Charged-hadron suppression in Pb plus Pb and Xe plus Xe collisions measured with the ATLAS detector
Weizmann Inst Sci, Fac Phys, Dept Particle Phys & Astrophys, 234 Herzl St, IL-76100 Rehovot, Israel..ORCID iD: 0000-0002-0942-1966
Weizmann Inst Sci, Dept Particle Phys, Rehovot, Israel..
KTH, School of Engineering Sciences (SCI), Physics, Particle and Astroparticle Physics.ORCID iD: 0000-0003-3867-0336
KTH, School of Engineering Sciences (SCI), Physics, Particle and Astroparticle Physics.ORCID iD: 0000-0002-8015-7512
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2019 (English)In: Nuclear Physics A, ISSN 0375-9474, E-ISSN 1873-1554, Vol. 982, p. 571-574Article in journal (Refereed) Published
Abstract [en]

The ATLAS detector at the LHC recorded 0.49 nb(-1) of Pb+Pb collisions and 25 of pp(-1) collisions, both at the center-of-mass energy 5.02 TeV per nucleon pair. Recently, ATLAS also recorded 30 mu b(-1) of Xe+Xe collisions at the center-of-mass energy 5.44 TeV, which provides a new opportunity to study the system-size dependence of the charged-hadron production in heavy-ion collisions. The large acceptance of the ATLAS detector allows to measure the spectra of charged hadrons in a wide range of pseudorapidity and transverse momentum. The nuclear modification factors R-AA are constructed as a ratio of the spectra measured in Pb+Pb or Xe+Xe collisions to that measured in pp collisions. The R-AA obtained in the two systems are presented for different centrality intervals and the results are discussed.

Place, publisher, year, edition, pages
ELSEVIER SCIENCE BV , 2019. Vol. 982, p. 571-574
Keywords [en]
xenon-xenon collisions, lead-lead collisions, charged-hadron production, nuclear modification factor
National Category
Fusion, Plasma and Space Physics
Identifiers
URN: urn:nbn:se:kth:diva-245161DOI: 10.1016/j.nuclphysa.2018.10.079ISI: 000457515500128OAI: oai:DiVA.org:kth-245161DiVA, id: diva2:1294482
Note

QC 20190307

Available from: 2019-03-07 Created: 2019-03-07 Last updated: 2019-03-07Bibliographically approved

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Jensen, BengtOhm, ChristianRipellino, GiuliaSidebo, P. EdvinStrandberg, Jonas

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