Transverse-momentum and pseudorapidity distributions of charged hadrons in pp collisions at √s = 0.9 and 2.36 TeV

Khachatryan, V. ; Mondal, N. K. ; et., al (2010) Transverse-momentum and pseudorapidity distributions of charged hadrons in pp collisions at √s = 0.9 and 2.36 TeV Journal of High Energy Physics, 2010 (2). pp. 1-19. ISSN 1126-6708

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Official URL: http://www.springerlink.com/content/t35h6211438476...

Related URL: http://dx.doi.org/10.1007/JHEP02(2010)041

Abstract

Measurements of inclusive charged-hadron transverse-momentum and pseudorapidity distributions are presented for proton-proton collisions at √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 pp̅ and pp collisions. The results at 2.36 TeV represent the highest-energy measurements at a particle collider to date.

Item Type:Article
Source:Copyright of this article belongs to Institute of Physics.
Keywords:Hadron-hadron Scattering
ID Code:87354
Deposited On:17 Mar 2012 13:08
Last Modified:17 Mar 2012 13:08

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