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 using the CMS detector in the pseudorapidity range 3:15 < vertical bar eta vertical bar < 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.

Chatrchyan, S., Khachatryan, V., Sirunyan, A., Tumasyan, A., Adam, W., Bergauer, T., et al. (2011). Measurement of energy flow at large pseudorapidities in pp collisions at root s=0.9 and 7 TeV. JOURNAL OF HIGH ENERGY PHYSICS, 2011(11) [10.1007/JHEP11(2011)148].

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

GHEZZI, ALESSIO;Massironi, A;Moroni, L;PAGANONI, MARCO;RAGAZZI, STEFANO;TABARELLI DE FATIS, TOMMASO;Branca, A;Govoni, P;DINARDO, MAURO EMANUELE;
2011

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 using the CMS detector in the pseudorapidity range 3:15 < vertical bar eta vertical bar < 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.
Articolo in rivista - Articolo scientifico
initial-state radiation; perturbation-theory; qcd coherence; small-x; model; distributions; scattering; physics; LHC; CMS
English
2011
2011
11
148
none
Chatrchyan, S., Khachatryan, V., Sirunyan, A., Tumasyan, A., Adam, W., Bergauer, T., et al. (2011). Measurement of energy flow at large pseudorapidities in pp collisions at root s=0.9 and 7 TeV. JOURNAL OF HIGH ENERGY PHYSICS, 2011(11) [10.1007/JHEP11(2011)148].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10281/46646
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