Decomposing Transverse Momentum Balance Contributions For Quenched Jets In Pbpb Collisions At Root S(Nn)=2.76 Tev

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Date
2016
Author
Sirunyan, A. M.
Tumasyan, A.
Adam, W.
Asilar, E.
Bergauer, T.
Brandstetter, J.
Brondolin, E.
Dragicevic, M.
Eroe, J.
Flechl, M.
Friedl, M.
Fruehwirth, R.
Ghete, V. M.
Hartl, C.
Hoermann, N.
Hrubec, J.
Jeitler, M.
Koenig, A.
Kraetschmer, I.
Liko, D.
Matsushita, T.
Mikulec, I.
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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(T)) with respect to both the leading and subleading jet axes in high-p(T) dijet events. The contributions of charged particles in different momentum ranges to the overall event p(T) balance are decomposed into short-range jet peaks and a long-range azimuthal asymmetry in charged-particle p(T). The results for PbPb collisions are compared to those in pp collisions using data collected in 2011 and 2013, at collision energy root s(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(T), relative azimuth, and radial distance from the jet axis for balanced and unbalanced dijets.
URI
https://doi.org/10.1007/JHEP11(2016)055
http://hdl.handle.net/11655/18263
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