Title
Transverse-momentum and pseudorapidity distributions of charged hadrons in pp collisions at <tex>$\sqrt{s}$</tex>=0.9 and 2.36 TeVTransverse-momentum and pseudorapidity distributions of charged hadrons in pp collisions at <tex>$\sqrt{s}$</tex>=0.9 and 2.36 TeV
Author
Faculty/Department
Faculty of Sciences. Physics
Research group
Elementary Particle Physics
Publication type
article
Publication
Bristol,
Subject
Physics
Source (journal)
Journal of high energy physics. - Bristol
Volume/pages
(2010):2, p. 041,1-041,35
ISSN
1126-6708
1029-8479
ISI
000275223100041
Carrier
E
Target language
English (eng)
Full text (Publishers DOI)
Affiliation
University of Antwerp
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.
E-info
https://repository.uantwerpen.be/docman/iruaauth/46d223/7a4212bf01d.pdf
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