Centrality and pseudorapidity dependence of the transverse energy flow in pPb collisions at sNN=5.02 TeV

Bruner, C. and Murray, M. and Aarrestad, T. K. and Abbaneo, D. and Abbiendi, G. and Bartók, Márton and Bencze, György and Filipovic, Nicolas and Hajdú, Csaba and Hidas, Pál and Horváth, Dezső and Makovec, Alajos and Molnár, József and Siklér, Ferenc and Trócsányi, Zoltán and Ujvári, Balázs and Veres, Gábor and Veszprémi, Viktor and Vesztergombi, György and Zsigmond, Anna Júlia (2016) Centrality and pseudorapidity dependence of the transverse energy flow in pPb collisions at sNN=5.02 TeV. NUCLEAR PHYSICS A, 956. pp. 533-536. ISSN 0375-9474

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Abstract

The almost hermetic coverage of CMS is used to measure the distribution of transverse energy as a function of pseudo- rapidity for pPb collisions at √sNN = 5.02 TeV. For minimum bias collisions (1/N) dET /dη reaches 23 GeV which implies an ET per participant pair comparable to that of peripheral PbPb collisions at √sNN = 2.76 TeV. The centrality dependence of transverse energy production has been studied using centrality measures defined in three different angular regions. There is a strong auto-correlation between (1/N) dET /dη and the η range used to define centrality for data and the EPOS-LHC and HIJING event generators. The centrality dependence of the data is much stronger for η values on the lead side than the proton side and shows significant differences from that predicted by either event generator.

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