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First measurement of jet mass in Pb- Pb and p- Pb collisions at the LHC

Acharya, S.
•
Adamová, D.
•
Aggarwal, M. M.
altro
Zmeskal, J.
2018
  • journal article

Periodico
PHYSICS LETTERS. SECTION B
Abstract
This letter presents the first measurement of jet mass in Pb–Pb and p–Pb collisions at √sNN = 2.76 TeV and √sNN = 5.02 TeV, respectively. Both the jet energy and the jet mass are expected to be sensitive to jet quenching in the hot Quantum Chromodynamics (QCD) matter created in nuclear collisions at collider energies. Jets are reconstructed from charged particles using the anti-kT jet algorithm and resolution parameter R = 0.4. The jets are measured in the pseudorapidity range |ηjet | < 0.5 and in three intervals of transverse momentum between 60 GeV/c and 120 GeV/c. The measurement of the jet mass in central Pb–Pb collisions is compared to the jet mass as measured in p–Pb reference collisions, to vacuum event generators, and to models including jet quenching. It is observed that the jet mass in central Pb–Pb collisions is consistent within uncertainties with p–Pb reference measurements. Furthermore, the measured jet mass in Pb–Pb collisions is not reproduced by the quenching models considered in this letter and is found to be consistent with PYTHIA expectations within systematic uncertainties
DOI
10.1016/j.physletb.2017.11.044
WOS
WOS:000419641100038
Archivio
http://hdl.handle.net/11368/2917817
info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-85036586402
https://www.sciencedirect.com/science/article/pii/S037026931730936X
Diritti
open access
license:creative commons
license uri:http://creativecommons.org/licenses/by/3.0/it/
FVG url
https://arts.units.it/bitstream/11368/2917817/1/PLB_776(2018)249-264.pdf
Soggetti
  • Nuclear and High Ener...

  • ALICE

  • LHC

Scopus© citazioni
41
Data di acquisizione
Jun 15, 2022
Vedi dettagli
Web of Science© citazioni
54
Data di acquisizione
Mar 28, 2024
Visualizzazioni
1
Data di acquisizione
Apr 19, 2024
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