Publication
Title
Transverse-momentum and pseudorapidity distributions of charged hadrons in pp collisions at $\sqrt{s}$=0.9 and 2.36 TeV
Author
Institution/Organisation
CMS Collaboration
Abstract
 Measurements of inclusive charged-hadron transverse-momentum and pseudorapidity distributions are presented for proton-proton collisions at $\sqrt{s} = 0.9$ and 2.36 TeV. The data were collected with the CMS detector during the LHC commissioning in December 2009. For non-single-diffractive interactions, the average charged-hadron transverse momentum is measured to be 0.46 ± 0.01 (stat.) ± 0.01 (syst.) GeV/c at 0.9 TeV and 0.50 ± 0.01 (stat.) ± 0.01 (syst.) GeV/c at 2.36 TeV, for pseudorapidities between --2.4 and +2.4. At these energies, the measured pseudorapidity densities in the central region, dN ch/dη||η|<0.5, are 3:48 ± 0:02 (stat.) ± 0.13 (syst.) and 4:47 ± 0:04 (stat.) ± 0.16 (syst.), respectively. The results at 0.9 TeV are in agreement with previous measurements and confirm the expectation of near equal hadron production in $\overline p p$ and pp collisions. The results at 2.36 TeV represent the highest-energy measurements at a particle collider to date.
Language
English
Source (journal)
Journal of high energy physics. - Bristol
Publication
Bristol : 2010
ISSN
1126-6708
1029-8479 [online]
Volume/pages
2(2010), p. 041,1-041,35
ISI
000275223100041
Full text (Publisher's DOI)
Full text (publisher's version - intranet only)
UAntwerpen
 Faculty/Department Research group [E?say:metaLocaldata.cgzprojectinf] Publication type Subject Affiliation Publications with a UAntwerp address