Journal article
Pseudorapidity distributions of charged hadrons in xenon-xenon collisions at √sNN = 5.44 TeV
Physics letters B Nuclear, elementary particle and high-energy physics, Vol.799, 135049
12/10/2019
DOI: 10.1016/j.physletb.2019.135049
Appears in Diamond Open Access
Abstract
Measurements of the pseudorapidity distributions of charged hadrons produced in xenon-xenon collisions
at a nucleon-nucleon centre-of-mass energy of √sNN = 5.44 TeV are presented. The measurements are
based on data collected by the CMS experiment at the LHC. The yield of primary charged hadrons
produced in xenon-xenon collisions in the pseudorapidity range |η| < 3.2 is determined using the
silicon pixel detector in the CMS tracking system. For the 5% most central collisions, the chargedhadron pseudorapidity density in the midrapidity region |η| < 0.5 is found to be 1187 ± 36 (syst),
with a negligible statistical uncertainty. The rapidity distribution of charged hadrons is also presented
in the range |y| < 3.2 and is found to be independent of rapidity around y = 0. Existing Monte-Carlo
event generators are unable to simultaneously describe both results. Comparisons of charged-hadron
multiplicities between xenon-xenon and lead-lead collisions at similar collision energies show that
particle production at midrapidity is strongly dependent on the collision geometry in addition to the
system size and collision energy
Details
- Title: Subtitle
- Pseudorapidity distributions of charged hadrons in xenon-xenon collisions at √sNN = 5.44 TeV
- Creators
- CMS Collaboration (Institution)
- Contributors
- M. Alhusseini (Contributor) - University of IowaB. Bilki (Contributor) - University of IowaW Clarida (Contributor) - University of IowaKamuran Dilsiz (Contributor) - University of Iowa, Physics and AstronomyR. P. Gandrajula (Contributor) - University of IowaM. Haytmyradov (Contributor) - University of IowaV Khristenko (Contributor) - University of IowaJ-P Merlo (Contributor) - University of IowaAlexi Mestvirishvili (Contributor) - University of Iowa, Physics and AstronomyA. Moeller (Contributor) - University of IowaJane M Nachtman (Contributor) - University of Iowa, Physics and AstronomyHasan Ogul (Contributor) - University of Iowa, Physics and AstronomyYasar Onel (Contributor) - University of Iowa, Physics and AstronomyF. Ozok (Contributor) - University of IowaAldo Penzo (Contributor) - University of Iowa, Physics and AstronomyC. Snyder (Contributor) - University of IowaE. Tiras (Contributor) - University of IowaJames W Wetzel (Contributor) - University of Iowa, Physics and Astronomy
- Resource Type
- Journal article
- Publication Details
- Physics letters B Nuclear, elementary particle and high-energy physics, Vol.799, 135049
- DOI
- 10.1016/j.physletb.2019.135049
- ISSN
- 1873-2445
- Publisher
- Elsevier
- Grant note
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- Language
- English
- Date published
- 12/10/2019
- Academic Unit
- Physics and Astronomy
- Record Identifier
- 9984439155502771
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