Baringer, Philip S.Bean, AliceBenelli, GabrieleGrachov, Oleg A.Murray, Michael J.Radicci, ValeriaSanders, Stephen J.Wood, Jeffrey ScottZhukova, VictoriaKhachatryan, V.Sirunyan, A. M.Tumasyan, A.Adam, W.Bergauer, T.2014-11-052014-11-052010-07-06V. Khachatryan et al. (CMS Collaboration). (2010). "Transverse-Momentum and Pseudorapidity Distributions of Charged Hadrons in pp Collisions at s√=7  TeV." Physical Review Letters, 105(02):022002. http://dx.doi.org/10.1103/PhysRevLett.105.022002.0031-9007https://hdl.handle.net/1808/15635This is the publisher's version, also available electronically from http://journals.aps.org/prl/abstract/10.1103/PhysRevLett.105.022002.Charged-hadron transverse-momentum and pseudorapidity distributions in proton-proton collisions at s√=7  TeV 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.Article10.1103/PhysRevLett.105.022002openAccess