Decomposing transverse momentum balance contributions for quenched jets in PbPb collisions at s N N = 2.76 $$ \sqrt{s_{\mathrm{N}\;\mathrm{N}}}=2.76 $$ TeV - Archive ouverte HAL Access content directly
Journal Articles Journal of High Energy Physics Year : 2016

Decomposing transverse momentum balance contributions for quenched jets in PbPb collisions at s N N = 2.76 $$ \sqrt{s_{\mathrm{N}\;\mathrm{N}}}=2.76 $$ TeV

Decomposing transverse momentum balance contributions for quenched jets in PbPb collisions at sqrt(s[NN]) = 2.76 TeV

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V. Khachatryan
  • Function : Author
S. Baffioni
P. Busson
R. Granier De Cassagnac
P. Min´e
  • Function : Author
M. Nguyen
  • Function : Author
P. Paganini
N. Chanon
C. Collard
D. Contardo
M. Gouzevitch
Fabienne Lagarde
M. Lethuillier
V. Sordini
S. Viret

Abstract

Interactions between jets and the quark-gluon plasma produced in heavy ion collisions are studied via the angular distributions of summed charged-particle transverse momenta (pt) with respect to both the leading and subleading jet axes in high-pt dijet events. The contributions of charged particles in different momentum ranges to the overall event pt balance are decomposed into short-range jet peaks and a long-range azimuthal asymmetry in charged-particle pt. The results for PbPb collisions are compared to those in pp collisions using data collected in 2011 and 2013, at collision energy sqrt(s[NN]) = 2.76 TeV with integrated luminosities of 166 inverse microbarns and 5.3 inverse picobarns, respectively, by the CMS experiment at the LHC. Measurements are presented as functions of PbPb collision centrality, charged-particle pt, relative azimuth, and radial distance from the jet axis for balanced and unbalanced dijets.
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Dates and versions

in2p3-01362518 , version 1 (10-12-2018)

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V. Khachatryan, M. Besançon, F. Couderc, M. Dejardin, D. Denegri, et al.. Decomposing transverse momentum balance contributions for quenched jets in PbPb collisions at sqrt(s[NN]) = 2.76 TeV. Journal of High Energy Physics, 2016, 1611 (11), pp.055. ⟨10.1007/JHEP11(2016)055⟩. ⟨in2p3-01362518⟩
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