Title
Transverse-momentum and pseudorapidity distributions of charged hadrons in pp collisions at √s=7TeV
Date Issued
06 July 2010
Access level
open access
Resource Type
journal article
Author(s)
Khachatryan V.
Sirunyan A.M.
Tumasyan A.
Adam W.
Bergauer T.
Dragicevic M.
Erö J.
Fabjan C.
Friedl M.
Frühwirth R.
Ghete V.M.
Hammer J.
Hänsel S.
Hoch M.
Hörmann N.
Hrubec J.
Jeitler M.
Kasieczka G.
Kiesenhofer W.
Krammer M.
Liko D.
Mikulec I.
Pernicka M.
Rohringer H.
Schöfbeck R.
Strauss J.
Taurok A.
Teischinger F.
Waltenberger W.
Walzel G.
Widl E.
Wulz C.E.
Mossolov V.
Shumeiko N.
Suarez Gonzalez J.
Benucci L.
Ceard L.
De Wolf E.A.
Hashemi M.
Janssen X.
Maes T.
Mucibello L.
Ochesanu S.
Roland B.
Rougny R.
Selvaggi M.
Van Haevermaet H.
Van Mechelen P.
Van Remortel N.
Adler V.
Beauceron S.
Blyweert S.
D'hondt J.
Devroede O.
Kalogeropoulos A.
Maes J.
Maes M.
Tavernier S.
Van Doninck W.
Van Mulders P.
Villella I.
Chabert E.C.
Charaf O.
Clerbaux B.
De Lentdecker G.
Dero V.
Gay A.P.R.
Hammad G.H.
Marage P.E.
Vander Velde C.
Vanlaer P.
Wickens J.
Costantini S.
Grunewald M.
Klein B.
Marinov A.
Ryckbosch D.
Thyssen F.
Tytgat M.
Vanelderen L.
Verwilligen P.
Walsh S.
Zaganidis N.
Basegmez S.
Bruno G.
Caudron J.
De Favereau De Jeneret J.
Delaere C.
Demin P.
Favart D.
Giammanco A.
Grégoire G.
Hollar J.
Lemaitre V.
Militaru O.
Ovyn S.
Pagano D.
Pin A.
Piotrzkowski K.
Quertenmont L.
Publisher(s)
American Physical Society
Abstract
Charged-hadron transverse-momentum and pseudorapidity distributions in proton-proton collisions at √s=7TeV are measured with the inner tracking system of the CMS detector at the LHC. The charged-hadron yield is obtained by counting the number of reconstructed hits, hit pairs, and fully reconstructed charged-particle tracks. The combination of the three methods gives a charged-particle multiplicity per unit of pseudorapidity dNch/ dη|η|<0.5 = 5.78 ± 0.01(stat)±0.23(syst) for non-single-diffractive events, higher than predicted by commonly used models. The relative increase in charged-particle multiplicity from √s=0.9 to 7 TeV is [66.1±1.0(stat)±4.2(syst)]%. The mean transverse momentum is measured to be 0.545±0.005(stat)±0.015(syst)GeV/c. The results are compared with similar measurements at lower energies. © 2010 The American Physical Society.
Volume
105
Issue
2
Language
English
OCDE Knowledge area
Física y Astronomía
Física nuclear
Scopus EID
2-s2.0-77954594464
Source
Physical Review Letters
ISSN of the container
00319007
Sponsor(s)
National Science Foundation, 0802184, NSF
Science and Technology Facilities Council, GRIDPP, PP/E002722/1, ST/F006748/1, ST/F007094/1, ST/G502347/1, ST/G502412/1, ST/H00081X/2, ST/I000410/1, ST/I002200/1, ST/I002839/1, ST/I505572/1, STFC
Schweizerischer Nationalfonds zur Förderung der Wissenschaftlichen Forschung, 128079, SNF
Sources of information:
Directorio de Producción Científica
Scopus