Measurement of energy flow at large pseudorapidities in pp collisions at √s = 0.9 and 7 TeV
Author(s)Alver, B.; Bauer, Gerry P.; Bendavid, Joshua L.; Busza, Wit; Butz, Erik M.; Clai, Ivan Amos; Chan, M.; Dutta, V.; Everaerts, Pieter Bruno Bart; Gomez-Ceballos, Guillelmo; Goncharov, Maxim; Hahn, Kristian Allan; Harris, P.; Kim, Y.; Klute, Markus; Lee, Y.-J.; Li, W.; Loizides, C.; Luckey, P. David, Jr.; Ma, Teng; Nahn, Steven; Paus, Christoph M. E.; Ralph, Duncan Kelley; Roland, Cristof E.; Roland, Gunther M.; Rudolph, M.; Stephans, George S. F.; Stockli, Fabian; Sumorok, Konstanty C.; Sung, Kevin Kai Hong; Velicanu, Dragos Alexandru; Wenger, Edward Allen; Wolf, R.; Xie, S.; Yang, M.; Yilmaz, Yetkin; Yoon, A.S.; Zanetti, Marco; Cali, Ivan Amos; 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.
DepartmentMassachusetts Institute of Technology. Department of Physics; Massachusetts Institute of Technology. Laboratory for Nuclear Science; Massachusetts Institute of Technology. School of Science
Journal of High Energy Physics
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
Final published version