Measurement of energy flow at large pseudorapidities in pp collisions at √s = 0.9 and 7 TeV
Author(s)
Bendavid, Joshua L.; Busza, Wit; Butz, Erik M.; Clai, Ivan Amos; Chan, M.; Everaerts, Pieter Bruno Bart; Gomez-Ceballos, Guillelmo; Goncharov, Maxim; Hahn, Kristian Allan; Kim, Y.; Klute, Markus; Li, W.; Ma, Teng; Nahn, Steven; Paus, Christoph M. E.; Ralph, Duncan Kelley; Roland, Cristof E.; Stephans, George S. F.; Sung, Kevin Kai Hong; Velicanu, Dragos Alexandru; Wenger, Edward Allen; Yilmaz, Yetkin; Zanetti, Marco; Cali, Ivan Amos; Alver, Burak Han; Harris, Philip Coleman; Luckey Jr, P David; Roland, Gunther M; Sumorok, Konstanty C; Wolf, Roger; Yang, Mingming; Yoon, A. S.; Bauer, Gerry P; Dutta, Valentina; Lee, Yen-Jie; Loizides, Constantinos; Rudolph, Matthew Scott; Stoeckli, Fabian; Xie, Si; Roland, Christof E; ... Show more Show less
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The energy flow, dE/dη, is studied at large pseudorapidities in proton-proton collisions at the LHC, for centre-of-mass energies of 0.9 and 7 TeV. The measurements are made using the CMS detector in the pseudorapidity range 3.15 < |η| < 4.9, for both minimum-bias events and events with at least two high-momentum jets. The data are compared to various pp Monte Carlo event generators whose theoretical models and input parameter values are sensitive to the energy-flow measurements. Inclusion of multiple-parton interactions in the Monte Carlo event generators is found to improve the description of the energy-flow measurements.
Date issued
2011-11Department
Massachusetts Institute of Technology. Department of Physics; Massachusetts Institute of Technology. Laboratory for Nuclear Science; Massachusetts Institute of Technology. School of ScienceJournal
Journal of High Energy Physics
Publisher
Springer-Verlag
Citation
Chatrchyan, S., V. Khachatryan, A. M. Sirunyan, A. Tumasyan, W. Adam, T. Bergauer, M. Dragicevic, et al. “Measurement of Energy Flow at Large Pseudorapidities in Pp Collisions at √s = 0.9 and 7 TeV.” J. High Energ. Phys. 2011, no. 11 (November 2011). © CERN, for the benefit of the CMS collaboration
Version: Final published version
ISSN
1029-8479
1126-6708