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dc.contributor.authorChatrchyan, S.
dc.contributor.authorKhachatryan, Vardan
dc.contributor.authorSirunyan, A.M.
dc.contributor.authorBaarmand, Marc M.
dc.contributor.authorDorney, B.
dc.contributor.authorGuragain, Samir
dc.contributor.authorHohlmann, Marcus
dc.contributor.authorKalakhety, Himali
dc.contributor.authorRalich, Robert M.
dc.contributor.authorVodopiyanov, Igor
dc.date.accessioned2016-09-21T20:17:15Z
dc.date.available2016-09-21T20:17:15Z
dc.date.issued2011-09-23
dc.identifier.citationThe CMS Collaboration, Chatrchyan, S., Khachatryan, V. et al. J. High Energ. Phys. (2011) 2011: 109. doi:10.1007/JHEP09(2011)109en_US
dc.identifier.urihttp://hdl.handle.net/11141/1036
dc.description.abstractA measurement of the underlying activity in events with a jet of transverse momentum in the several GeV region is performed in proton-proton collisions at √s = 0.9 and 7 TeV, using data collected by the CMS experiment at the LHC. The production of charged particles with pseudorapidity |η|<2 and transverse momentum pT >0.5 GeV/c is studied in the azimuthal region transverse to that of the leading set of charged particles forming a track-jet. A significant growth of the average multiplicity and scalar-pT sum of the particles in the transverse region is observed with increasing pT of the leading trackjet, followed by a much slower rise above a few GeV/c. For track-jet pT larger than a few GeV/c, the activity in the transverse region is approximately doubled with a centreof-mass energy increase from 0.9 to 7 TeV. Predictions of several QCD-inspired models as implemented in PYTHIA are compared to the data.en_US
dc.language.isoen_USen_US
dc.rightsThe Journal of High Energy Physics (JHEP) is an open-access journal funded by SCOAP3 (scoap3.org) and licensed under CC BY 4.0en_US
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/en_US
dc.titleMeasurement of the underlying event activity at the LHC with √s = 7 TeV and comparison with √s = 0.9 TeVen_US
dc.typeArticleen_US
dc.identifier.doi10.1007/JHEP09(2011)109


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The Journal of High Energy Physics (JHEP) is an open-access journal funded by SCOAP3 (scoap3.org) and licensed under CC BY 4.0
Except where otherwise noted, this item's license is described as The Journal of High Energy Physics (JHEP) is an open-access journal funded by SCOAP3 (scoap3.org) and licensed under CC BY 4.0