### Transverse-momentum and pseudorapidity distributions of charged hadrons in pp collisions at √s=7 TeV

V Khachatryan, et al. (2010) 105(2).
abstract
Charged-hadron transverse-momentum and pseudorapidity distributions in proton-proton collisions at root 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 dN(ch)/d eta vertical bar(vertical bar eta vertical bar<0.5) = 5.78 +/- 0.01(stat) +/- 0.23(stat) for non-single-diffractive events, higher than predicted by commonly used models. The relative increase in charged-particle multiplicity from root 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.
author
organization
alternative title
Transverse-momentum and pseudorapidity distributions of charged hadrons in pp collisions at root s=7 TeV
year
type
journalArticle (original)
publication status
published
subject
keyword
DEPENDENCE, ENERGIES, PARTICLES
journal title
PHYSICAL REVIEW LETTERS
Phys. Rev. Lett.
volume
105
issue
2
article number
022002
pages
14 pages
Web of Science type
Article
Web of Science id
000279555600002
JCR category
PHYSICS, MULTIDISCIPLINARY
JCR impact factor
7.621 (2010)
JCR rank
5/79 (2010)
JCR quartile
1 (2010)
ISSN
0031-9007
DOI
10.1103/PhysRevLett.105.022002
language
English
UGent publication?
yes
classification
A1
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