Publication
Title
First measurement of the underlying event activity at the LHC with $\sqrt{s}$ = 0.9 TeV
Author
Institution/Organisation
CMS Collaboration
Abstract
 A measurement of the underlying activity in scattering processes with p T scale in the GeV region is performed in protonproton collisions at $\sqrt{s} = 0.9$ TeV, using data collected by the CMS experiment at the LHC. Charged particle production is studied with reference to the direction of a leading object, either a charged particle or a set of charged particles forming a jet. Predictions of several QCD-inspired models as implemented in PYTHIA are compared, after full detector simulation, to the data. The models generally predict too little production of charged particles with pseudorapidity |η|<2, p T >0.5 GeV/c, and azimuthal direction transverse to that of the leading object.
Language
English
Source (journal)
European physical journal : C : particles and fields. - Berlin
Publication
Berlin : 2010
ISSN
1434-6044
Volume/pages
70:3(2010), p. 555-572
ISI
000285200000003
Full text (Publishers DOI)
Full text (publishers version - intranet only)
UAntwerpen
 Faculty/Department Research group Publication type Subject Affiliation Publications with a UAntwerp address