Loading...
Transverse-Momentum and Pseudorapidity Distributions of Charged Hadrons in pp Collisions at s√=7 TeV
Baringer, Philip S. Bean, Alice Benelli, Gabriele Grachov, Oleg A. Murray, Michael J. Radicci, Valeria Sanders, Stephen J. Wood, Jeffrey Scott Zhukova, Victoria Khachatryan, V.
Baringer, Philip S.
Bean, Alice
Benelli, Gabriele
Grachov, Oleg A.
Murray, Michael J.
Radicci, Valeria
Sanders, Stephen J.
Wood, Jeffrey Scott
Zhukova, Victoria
Khachatryan, V.
Citations
Altmetric:
Abstract
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.
Description
This is the publisher's version, also available electronically from http://journals.aps.org/prl/abstract/10.1103/PhysRevLett.105.022002.
Date
2010-07-06
Journal Title
Journal ISSN
Volume Title
Publisher
American Physical Society
Collections
Research Projects
Organizational Units
Journal Issue
Keywords
Citation
V. 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.