Charged particle transverse momentum spectra in pp collisions at √ s = 0.9 and 7 TeV
Name
Chatrchyan2011_Article_ChargedParticleTransverseMomen.pdf
Description
Published version
Size
739.45 KB
Format
Adobe PDF
Checksum (MD5)
5239bf82e5de08d900f09c086f7057e2
Author(s)
The CMS Collaboration
Date Issued
2011
Journal
Journal of High Energy Physics
Publisher
Springer Science and Business Media LLC
Citation
Chatrchyan, S., et al. "Charged Particle Transverse Momentum Spectra in Pp Collisions at Root S=0.9 and 7 Tev." Journal of High Energy Physics 8 (2011).
Version
Final published version
Abstract
The charged particle transverse momentum (pT) spectra are presented for pp collisions at √s = 0:9 and 7TeV. The data samples were collected with the CMS detector at the LHC and correspond to integrated luminosities of 231 μb-1and 2.96 pb-1, respectively. Calorimeter-based high-transverse-energy triggers are employed to enhance the statistical reach of the high-pT measurements. The results are compared with leading and next-toleading order QCD and with an empirical scaling of measurements at different collision energies using the scaling variable xT - 2pT=ps over the pT range up to 136 GeV/c. Using a combination of xT scaling and direct interpolation at fixed pT, a reference transverse momentum spectrum at √s = 2:76TeV 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. Copyright CERN.
MIT Department
Massachusetts Institute of Technology. Department of Physics
Massachusetts Institute of Technology. Laboratory for Nuclear Science
Terms of Use
Creative Commons Attribution Noncommercial 3.0 unported license
Persistent DSpace Link
DOI of Published Version
https://doi.org/10.1007/JHEP08(2011)086
