# Decomposing transverse momentum balance contributions for quenched jets in PbPb collisions at $\sqrt{^{s}NN}$ = 2.76 TeV

CMS Collaboration; Canelli, F; Caminada, L; De Cosa, A; Kilminster, B; Robmann, P; et al (2016). Decomposing transverse momentum balance contributions for quenched jets in PbPb collisions at $\sqrt{^{s}NN}$ = 2.76 TeV. Journal of High Energy Physics, 1611:55.

## 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 ($p_{\mathrm{T}}$) with respect to both the leading and subleading jet axes in high-$p_{\mathrm{T}}$ dijet events. The contributions of charged particles in different momentum ranges to the overall event $p_{\mathrm{T}}$ balance are decomposed into short-range jet peaks and a long-range azimuthal asymmetry in charged-particle $p_{\mathrm{T}}$. The results for PbPb collisions are compared to those in pp collisions using data collected in 2011 and 2013, at collision energy $\sqrt{s_\mathrm{NN}} =$ 2.76 TeV with integrated luminosities of 166 $\mu$b$^{-1}$ and 5.3 pb$^{-1}$, respectively, by the CMS experiment at the LHC. Measurements are presented as functions of PbPb collision centrality, charged-particle $p_{\mathrm{T}}$, relative azimuth, and radial distance from the jet axis for balanced and unbalanced dijets.

## 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 ($p_{\mathrm{T}}$) with respect to both the leading and subleading jet axes in high-$p_{\mathrm{T}}$ dijet events. The contributions of charged particles in different momentum ranges to the overall event $p_{\mathrm{T}}$ balance are decomposed into short-range jet peaks and a long-range azimuthal asymmetry in charged-particle $p_{\mathrm{T}}$. The results for PbPb collisions are compared to those in pp collisions using data collected in 2011 and 2013, at collision energy $\sqrt{s_\mathrm{NN}} =$ 2.76 TeV with integrated luminosities of 166 $\mu$b$^{-1}$ and 5.3 pb$^{-1}$, respectively, by the CMS experiment at the LHC. Measurements are presented as functions of PbPb collision centrality, charged-particle $p_{\mathrm{T}}$, relative azimuth, and radial distance from the jet axis for balanced and unbalanced dijets.

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