Measurement of the underlying event activity at the LHC with √s = 7 TeV and comparison with √s = 0:9 TeV

dc.contributor.author Chatrchyan, S.
dc.contributor.author Khachatryan, V.
dc.contributor.author Sirunyan, A. M.
dc.contributor.author Tumasyan, A.
dc.contributor.author Adam, W.
dc.contributor.author Bergauer, T.
dc.contributor.author Dragicevic, M.
dc.contributor.author Erö, J.
dc.contributor.author Fabjan, C.
dc.contributor.author Friedl, M.
dc.contributor.author Frühwirth, R.
dc.contributor.author Ghete, V. M.
dc.contributor.author Hammer, J.
dc.contributor.author Hänsel, S.
dc.contributor.author Hoch, M.
dc.contributor.author Hörmann, N.
dc.contributor.author Hrubec, J.
dc.contributor.author Jeitler, M.
dc.contributor.author Kiesenhofer, W.
dc.contributor.author Krammer, M.
dc.contributor.author Liko, D.
dc.contributor.author Mikulec, I.
dc.contributor.author Pernicka, M.
dc.contributor.author Rohringer, H.
dc.contributor.author Schöfbeck, R.
dc.contributor.author Strauss, J.
dc.contributor.author Taurok, A.
dc.contributor.author Teischinger, F.
dc.contributor.author Wagner, P.
dc.contributor.author Waltenberger, W.
dc.contributor.author Walzel, G.
dc.contributor.author Widl, E.
dc.contributor.author Wulz, C. E.
dc.contributor.author Mossolov, V.
dc.contributor.author Shumeiko, N.
dc.contributor.author Suarez Gonzalez, J.
dc.contributor.author Bansal, S.
dc.contributor.author Benucci, L.
dc.contributor.author De Wolf, E. A.
dc.contributor.author Janssen, X.
dc.contributor.author Maes, J.
dc.contributor.author Maes, T.
dc.contributor.author Mucibello, L.
dc.contributor.author Ochesanu, S.
dc.contributor.author Roland, B.
dc.contributor.author Rougny, R.
dc.contributor.author Selvaggi, M.
dc.contributor.author Van Haevermaet, H.
dc.contributor.author Van Mechelen, P.
dc.contributor.author Van Remortel, N.
dc.contributor.author Blekman, F.
dc.contributor.author Blyweert, S.
dc.contributor.author D'Hondt, J.
dc.contributor.author Devroede, O.
dc.contributor.author Gonzalez Suarez, R.
dc.contributor.author Kalogeropoulos, A.
dc.contributor.author Maes, M.
dc.contributor.author Van Doninck, W.
dc.contributor.author Van Mulders, P.
dc.contributor.author Van Onsem, G. P.
dc.contributor.author Villella, I.
dc.contributor.author Charaf, O.
dc.contributor.author Clerbaux, B.
dc.contributor.author De Lentdecker, G.
dc.contributor.author Dero, V.
dc.contributor.author Gay, A. P.R.
dc.contributor.author Hammad, G. H.
dc.contributor.author Hreus, T.
dc.contributor.author Marage, P. E.
dc.contributor.author Thomas, L.
dc.contributor.author Vander Velde, C.
dc.contributor.author Vanlaer, P.
dc.contributor.author Adler, V.
dc.contributor.author Cimmino, A.
dc.contributor.author Costantini, S.
dc.contributor.author Grunewald, M.
dc.contributor.author Klein, B.
dc.contributor.author Lellouch, J.
dc.contributor.author Marinov, A.
dc.contributor.author Mccartin, J.
dc.contributor.author Ryckbosch, D.
dc.contributor.author Thyssen, F.
dc.contributor.author Tytgat, M.
dc.contributor.author Vanelderen, L.
dc.contributor.author Verwilligen, P.
dc.contributor.author Walsh, S.
dc.contributor.author Zaganidis, N.
dc.contributor.author Basegmez, S.
dc.contributor.author Bruno, G.
dc.contributor.author Caudron, J.
dc.contributor.author Ceard, L.
dc.contributor.author Cortina Gil, E.
dc.contributor.author De Favereau De Jeneret, J.
dc.contributor.author Delaere, C.
dc.contributor.author Favart, D.
dc.contributor.author Giammanco, A.
dc.contributor.author Grégoire, G.
dc.contributor.author Hollar, J.
dc.contributor.author Lemaitre, V.
dc.contributor.author Liao, J.
dc.date.accessioned 2022-03-27T06:41:22Z
dc.date.available 2022-03-27T06:41:22Z
dc.date.issued 2011-12-01
dc.description.abstract A 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 7TeV, 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 7TeV. Predictions of several QCD-inspired models as implemented in pythia are compared to the data.
dc.identifier.citation Journal of High Energy Physics. v.2011(9)
dc.identifier.issn 11266708
dc.identifier.uri 10.1007/JHEP09(2011)109
dc.identifier.uri http://link.springer.com/10.1007/JHEP09(2011)109
dc.identifier.uri https://dspace.uohyd.ac.in/handle/1/9711
dc.subject Hadron-hadron scattering
dc.title Measurement of the underlying event activity at the LHC with √s = 7 TeV and comparison with √s = 0:9 TeV
dc.type Journal. Article
dspace.entity.type
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