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

V Khachatryan, AM Sirunyan, A Tumasyan, W Adam, T Bergauer, M Dragicevic, J Ero, C Fabjan, M Friedl, R Fruhwirth, et al. (2010) PHYSICAL REVIEW LETTERS. 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.
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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
copyright statement
I have retained and own the full copyright for this publication
id
1294076
handle
http://hdl.handle.net/1854/LU-1294076
date created
2011-06-22 10:22:40
date last changed
2016-12-21 15:41:25
@article{1294076,
  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{\textlangle}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.},
  articleno    = {022002},
  author       = {Khachatryan, V and Sirunyan, AM and Tumasyan, A and Adam, W and Bergauer, T and Dragicevic, M and Ero, J and Fabjan, C and Friedl, M and Fruhwirth, R and Ghete, VM and Hammer, J and Hansel, S and Hoch, M and Hormann, N and Hrubec, J and Jeitler, M and Kasieczka, G and Kiesenhofer, W and Krammer, M and Liko, D and Mikulec, I and Pernicka, M and Rohringer, H and Schofbeck, R and Strauss, J and Taurok, A and Teischinger, F and Waltenberger, W and Walzel, G and Widl, E and Wulz, CE and Mossolov, V and Shumeiko, N and Gonzalez, JS and Benucci, L and Ceard, L and De Wolf, EA and Hashemi, M and Janssen, X and Maes, T and Mucibello, L and Ochesanu, S and Roland, B and Rougny, R and Selvaggi, M and Van Haevermaet, H and Van Mechelen, P and Van Remortel, N and Adler, V and Beauceron, S and Blyweert, S and D'Hondt, J and Devroede, O and Kalogeropoulos, A and Maes, J and Maes, M and Tavernier, S and Van Doninck, W and Van Mulders, P and Villella, I and Chabert, EC and Charaf, O and Clerbaux, B and De Lentdecker, G and Dero, V and Gay, APR and Hammad, GH and Marage, PE and Velde, CV and Vanlaer, P and Wickens, J and Costantini, Silvia and Gr{\"u}newald, Martin and Klein, Benjamin and