Published January 1, 2016
| Version v1
Journal article
Open
Decomposing transverse momentum balance contributions for quenched jets in PbPb collisions at root s(NN)=2.76 TeV
Creators
- Ruiz Vargas, J. C.1
- Khachatryan, V.2
- Sirunyan, A. M.2
- Tumasyan, A.2
- Adam, W.3
- Asilar, E.3
- Bergauer, T.3
- Brandstetter, J.3
- Brondolin, E.3
- Dragicevic, M.3
- Ero, J.3
- Mossolov, V.4
- Shumeiko, N.4
- Gonzalez, J. Suarez4
- Alderweireldt, S.5
- De Wolf, E. A.5
- Janssen, X.5
- Lauwers, J.5
- Van de Klundert, M.5
- Van Haevermaet, H.5
- Van Haevermaet, H.5
- 1. Univ Estadual Paulista, Sao Paulo, Brazil
- 2. Yerevan Phys Inst, Yerevan, Armenia
- 3. OeAW, Inst Hochenergiephys, Vienna, Austria
- 4. Natl Ctr Particle & High Energy Phys, Minsk, BELARUS
- 5. Univ Antwerp, Antwerp, Belgium
Description
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.
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