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Title
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Transverse-momentum and pseudorapidity distributions of charged hadrons in pp collisions at =0.9 and 2.36 TeV
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Author
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Institution/Organisation
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CMS Collaboration
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Abstract
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| 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. |
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Language
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English
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Source (journal)
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Journal of high energy physics. - Bristol
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Publication
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Bristol
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2010
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ISSN
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1126-6708
1029-8479
[online]
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Volume/pages
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2
(2010)
, p. 041,1-041,35
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ISI
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000275223100041
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Full text (Publisher's DOI)
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Full text (publisher's version - intranet only)
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