Transverse momentum spectra and nuclear modification factors of charged particles in Xe–Xe collisions at s NN =5.44TeV

ALICE Collaboration

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Abstract

Transverse momentum (p T ) spectra of charged particles at mid-pseudorapidity in Xe–Xe collisions at s NN =5.44TeV measured with the ALICE apparatus at the Large Hadron Collider are reported. The kinematic range 0.15<p T <50GeV/c and |η|<0.8 is covered. Results are presented in nine classes of collision centrality in the 0–80% range. For comparison, a pp reference at the collision energy of s=5.44 TeV is obtained by interpolating between existing pp measurements at s=5.02 and 7 TeV. The nuclear modification factors in central Xe–Xe collisions and Pb–Pb collisions at a similar center-of-mass energy of s NN =5.02 TeV, and in addition at 2.76 TeV, at analogous ranges of charged particle multiplicity density 〈dN ch /dη〉 show a remarkable similarity at p T >10 GeV/c. The centrality dependence of the ratio of the average transverse momentum 〈p T 〉 in Xe–Xe collisions over Pb–Pb collision at s=5.02 TeV is compared to hydrodynamical model calculations.

Original languageEnglish (US)
Pages (from-to)166-179
Number of pages14
JournalPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume788
DOIs
StatePublished - Jan 10 2019

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transverse momentum
charged particles
collisions
center of mass
kinematics
energy

All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics

Cite this

@article{5c411ac43d4d456e8ceae3de5ba9f5e2,
title = "Transverse momentum spectra and nuclear modification factors of charged particles in Xe–Xe collisions at s NN =5.44TeV",
abstract = "Transverse momentum (p T ) spectra of charged particles at mid-pseudorapidity in Xe–Xe collisions at s NN =5.44TeV measured with the ALICE apparatus at the Large Hadron Collider are reported. The kinematic range 0.15<p T <50GeV/c and |η|<0.8 is covered. Results are presented in nine classes of collision centrality in the 0–80{\%} range. For comparison, a pp reference at the collision energy of s=5.44 TeV is obtained by interpolating between existing pp measurements at s=5.02 and 7 TeV. The nuclear modification factors in central Xe–Xe collisions and Pb–Pb collisions at a similar center-of-mass energy of s NN =5.02 TeV, and in addition at 2.76 TeV, at analogous ranges of charged particle multiplicity density 〈dN ch /dη〉 show a remarkable similarity at p T >10 GeV/c. The centrality dependence of the ratio of the average transverse momentum 〈p T 〉 in Xe–Xe collisions over Pb–Pb collision at s=5.02 TeV is compared to hydrodynamical model calculations.",
author = "{ALICE Collaboration} and S. Acharya and Acosta, {F. T.} and D. Adamov{\'a} and J. Adolfsson and Aggarwal, {M. M.} and {Aglieri Rinella}, G. and M. Agnello and N. Agrawal and Z. Ahammed and Ahn, {S. U.} and S. Aiola and A. Akindinov and M. Al-Turany and Alam, {S. N.} and Albuquerque, {D. S.D.} and D. Aleksandrov and B. Alessandro and {Alfaro Molina}, R. and Y. Ali and A. Alici and A. Alkin and J. Alme and T. Alt and L. Altenkamper and I. Altsybeev and C. Andrei and D. Andreou and Andrews, {H. A.} and A. Andronic and M. Angeletti and V. Anguelov and C. Anson and T. Antičić and F. Antinori and P. Antonioli and R. Anwar and N. Apadula and L. Aphecetche and H. Appelsh{\"a}user and S. Arcelli and R. Arnaldi and Arnold, {O. W.} and Arsene, {I. C.} and M. Arslandok and B. Audurier and A. Augustinus and R. Averbeck and Azmi, {M. D.} and A. Badal{\`a} and Seger, {Janet E.}",
year = "2019",
month = "1",
day = "10",
doi = "10.1016/j.physletb.2018.10.052",
language = "English (US)",
volume = "788",
pages = "166--179",
journal = "Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics",
issn = "0370-2693",
publisher = "Elsevier",

}

TY - JOUR

T1 - Transverse momentum spectra and nuclear modification factors of charged particles in Xe–Xe collisions at s NN =5.44TeV

AU - ALICE Collaboration

AU - Acharya, S.

AU - Acosta, F. T.

AU - Adamová, D.

AU - Adolfsson, J.

AU - Aggarwal, M. M.

AU - Aglieri Rinella, G.

AU - Agnello, M.

AU - Agrawal, N.

AU - Ahammed, Z.

AU - Ahn, S. U.

AU - Aiola, S.

AU - Akindinov, A.

AU - Al-Turany, M.

AU - Alam, S. N.

AU - Albuquerque, D. S.D.

AU - Aleksandrov, D.

AU - Alessandro, B.

AU - Alfaro Molina, R.

AU - Ali, Y.

AU - Alici, A.

AU - Alkin, A.

AU - Alme, J.

AU - Alt, T.

AU - Altenkamper, L.

AU - Altsybeev, I.

AU - Andrei, C.

AU - Andreou, D.

AU - Andrews, H. A.

AU - Andronic, A.

AU - Angeletti, M.

AU - Anguelov, V.

AU - Anson, C.

AU - Antičić, T.

AU - Antinori, F.

AU - Antonioli, P.

AU - Anwar, R.

AU - Apadula, N.

AU - Aphecetche, L.

AU - Appelshäuser, H.

AU - Arcelli, S.

AU - Arnaldi, R.

AU - Arnold, O. W.

AU - Arsene, I. C.

AU - Arslandok, M.

AU - Audurier, B.

AU - Augustinus, A.

AU - Averbeck, R.

AU - Azmi, M. D.

AU - Badalà, A.

AU - Seger, Janet E.

PY - 2019/1/10

Y1 - 2019/1/10

N2 - Transverse momentum (p T ) spectra of charged particles at mid-pseudorapidity in Xe–Xe collisions at s NN =5.44TeV measured with the ALICE apparatus at the Large Hadron Collider are reported. The kinematic range 0.15<p T <50GeV/c and |η|<0.8 is covered. Results are presented in nine classes of collision centrality in the 0–80% range. For comparison, a pp reference at the collision energy of s=5.44 TeV is obtained by interpolating between existing pp measurements at s=5.02 and 7 TeV. The nuclear modification factors in central Xe–Xe collisions and Pb–Pb collisions at a similar center-of-mass energy of s NN =5.02 TeV, and in addition at 2.76 TeV, at analogous ranges of charged particle multiplicity density 〈dN ch /dη〉 show a remarkable similarity at p T >10 GeV/c. The centrality dependence of the ratio of the average transverse momentum 〈p T 〉 in Xe–Xe collisions over Pb–Pb collision at s=5.02 TeV is compared to hydrodynamical model calculations.

AB - Transverse momentum (p T ) spectra of charged particles at mid-pseudorapidity in Xe–Xe collisions at s NN =5.44TeV measured with the ALICE apparatus at the Large Hadron Collider are reported. The kinematic range 0.15<p T <50GeV/c and |η|<0.8 is covered. Results are presented in nine classes of collision centrality in the 0–80% range. For comparison, a pp reference at the collision energy of s=5.44 TeV is obtained by interpolating between existing pp measurements at s=5.02 and 7 TeV. The nuclear modification factors in central Xe–Xe collisions and Pb–Pb collisions at a similar center-of-mass energy of s NN =5.02 TeV, and in addition at 2.76 TeV, at analogous ranges of charged particle multiplicity density 〈dN ch /dη〉 show a remarkable similarity at p T >10 GeV/c. The centrality dependence of the ratio of the average transverse momentum 〈p T 〉 in Xe–Xe collisions over Pb–Pb collision at s=5.02 TeV is compared to hydrodynamical model calculations.

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U2 - 10.1016/j.physletb.2018.10.052

DO - 10.1016/j.physletb.2018.10.052

M3 - Article

VL - 788

SP - 166

EP - 179

JO - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

JF - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

SN - 0370-2693

ER -