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

V Khachatryan, et al.
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Abstract
Measurements of inclusive charged-hadron transverse-momentum and pseudorapidity distributions are presented for proton-proton collisions at root 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)/d eta vertical bar(vertical bar eta vertical bar<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 p<(p)over bar> and pp collisions. The results at 2.36 TeV represent the highest-energy measurements at a particle collider to date.
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## Citation

Chicago
Khachatryan, V, AM Sirunyan, A Tumasyan, W Adam, T Bergauer, M Dragicevic, J Ero, 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 (2).
APA
Khachatryan, V., Sirunyan, A., Tumasyan, A., Adam, W., Bergauer, T., Dragicevic, M., Ero, J., 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, (2).
Vancouver
1.
Khachatryan V, Sirunyan A, Tumasyan A, Adam W, Bergauer T, Dragicevic M, et al. 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).
MLA
Khachatryan, V, AM Sirunyan, A Tumasyan, et al. “Transverse-momentum and Pseudorapidity Distributions of Charged Hadrons in Pp Collisions at √s=0.9 and 2.36 TeV.” JOURNAL OF HIGH ENERGY PHYSICS 2 (2010): n. pag. Print.
```@article{1272305,
abstract     = {Measurements of inclusive charged-hadron transverse-momentum and pseudorapidity distributions are presented for proton-proton collisions at root 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)/d eta vertical bar(vertical bar eta vertical bar{\textlangle}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 p{\textlangle}(p)over bar{\textrangle} and pp collisions. The results at 2.36 TeV represent the highest-energy measurements at a particle collider to date.},
articleno    = {041},
issn         = {1126-6708},
journal      = {JOURNAL OF HIGH ENERGY PHYSICS},