Quick Search:
Browse by:

Zurich Open Repository and Archive

Permanent URL to this publication: http://dx.doi.org/10.5167/uzh-59113

# CMS Collaboration; Amsler, C; Chiochia, V; Snoek, H; Verzetti, M; Favaro, C; Storey, J; De Visscher, S; Aguiló, E; Otyugova, P; Millan, B; Ivova, M; Schmitt, A (2011). Charged particle transverse momentum spectra in pp collisions at √s = 0.9 and 7 TeV. Journal of High Energy Physics, (8):86.

 Preview
Published Version
PDF
656kB

View at publisher
 Preview
Accepted Version
PDF (Version 1)
750kB
 Preview
Accepted Version
PDF (Version 2)
755kB

## Abstract

The charged particle transverse momentum (pT) spectra are presented for pp collisions at sqrt(s)=0.9 and 7 TeV. The data samples were collected with the CMS detector at the LHC and correspond to integrated luminosities of 231 inverse microbarns and 2.96 inverse picobarns, respectively. Calorimeter-based high-transverse-energy triggers are employed to enhance the statistical reach of the high-pT measurements. The results are compared with both leading-order QCD and with an empirical scaling of measurements at different collision energies using the scaling variable xT = 2 pT/sqrt(s) over the pT range up to 200 GeV/c. Using a combination of xT scaling and direct interpolation at fixed pT, a reference transverse momentum spectrum at sqrt(s)=2.76 TeV is constructed, which can be used for studying high-pT particle suppression in the dense QCD medium produced in heavy-ion collisions at that centre-of-mass energy.

## Citations

12 citations in Web of Science®
14 citations in Scopus®