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Measurement of energy flow at large pseudorapidities in pp collisions at √s = 0.9 and 7 TeV


CMS Collaboration; Amsler, C; Chiochia, V; Snoek, H; Favaro, C; Verzetti, M; Aguiló, E; De Visscher, S; Schmitt, A; Millan, B; Ivova, M; Storey, J; Otyugova, P (2011). Measurement of energy flow at large pseudorapidities in pp collisions at √s = 0.9 and 7 TeV. Journal of High Energy Physics, (11):148.

Abstract

The energy flow, dE/d(eta), 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 in the pseudorapidity range 3.15 < |eta| < 4.9, for both minimum-bias events and events with at least two high-momentum jets, using the CMS detector. 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.

Abstract

The energy flow, dE/d(eta), 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 in the pseudorapidity range 3.15 < |eta| < 4.9, for both minimum-bias events and events with at least two high-momentum jets, using the CMS detector. 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.

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Additional indexing

Item Type:Journal Article, refereed, original work
Communities & Collections:07 Faculty of Science > Physics Institute
Dewey Decimal Classification:530 Physics
Language:English
Date:2011
Deposited On:17 Feb 2012 16:07
Last Modified:07 Dec 2017 12:47
Publisher:Springer
ISSN:1126-6708 (P) 1029-8479 (E)
Publisher DOI:https://doi.org/10.1007/JHEP11(2011)148
Related URLs:http://arxiv.org/abs/1110.0211

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