First Measurement of the Underlying Event Activity at the LHC with √s = 0.9 TeV
Name
Khachatryan2010_Article_FirstMeasurementOfTheUnderlyin.pdf
Size
1.22 MB
Format
Adobe PDF
Checksum (MD5)
5e6a5d62031adc21fecd2bf2012a5d9d
Author(s)
CMS Collaboration
Alver, Burak Han
Bauer, Gerry P
Bendavid, Joshua L.
Busza, Wit
Butz, Erik M.
Cali, Ivan Amos
D'Enterria, David
Everaerts, Pieter Bruno Bart
Gomez-Ceballos, Guillelmo
Date Issued
November 2010
Journal
European Physical Journal C: Particles and Fields
Publisher
European Physical Journal C: Particles and Fields
Citation
Khachatryan, V. et al. “First Measurement of the Underlying Event Activity at the LHC with √s = 0.9 TeV.” The European Physical Journal C 70, 3 (November 2010): 555–572 © CERN for benefit of the CMS collaboration 2010
Version
Final published version
Abstract
A measurement of the underlying activity in scattering processes with p T scale in the GeV region is performed in proton-proton collisions at √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 {pipe}η{pipe} < 2, p T > 0.5 GeV/c, and azimuthal direction transverse to that of the leading object.
MIT Department
Massachusetts Institute of Technology. Department of Physics
Massachusetts Institute of Technology. Laboratory for Nuclear Science
Terms of Use
Creative Commons Attribution 4.0 International License
Persistent DSpace Link
DOI of Published Version
https://doi.org/10.1140/EPJC/S10052-010-1453-9
