Name: CMS_2011_S9120041
Year: 2011
Summary: Traditional leading jet UE measurement at $\sqrt(s)=0.9$ and 7 TeV
Experiment: CMS
Collider: LHC
SpiresID: 9120041
Status: VALIDATED
Authors:
 - Mohammed Zakaria (mzakaria@ufl.edu)
References:
  - J. High Energy Phys 09 (2011) 109
RunInfo:
   Requires inclusive inelastic events (non-diffractive and inelastic
   diffractive). The profile plots require large statistics.
Beams: [p+, p+]
Energies: [900, 7000]
pT Cuts: pT > 0.5 GeV (all tracks).
Description:
   A measurement of the underlying activity in scattering processes with a hard
   scale in the several-GeV region is performed in proton-proton collisions at
   Energies of 0.9 and 7 TeV, using data collected by the CMS experiment at the
   LHC. The production of charged particles with pseudorapidity |eta| < 2 and
   transverse momentum pT > 0.5 GeV/c is studied in the azimuthal region transverse
   to that of the leading set of charged particles forming a track-jet. Various
   comparisons are made between the two different energies and also beteen two
   sets of cuts on pT for leading track jet pT-leading > 3 GeV and pT-leading > 20 GeV.
   The activity is studied using 5 types of plots. 2 profile plots for the
   multiplcity of charged particles and the scalar sum of pT. and 3 distributions
   for the two previous quantities as well we pT for all the particles in the
   transverse region.
BibKey: Chatrchyan:2011id
BibTeX: '@article{Chatrchyan:2011id,
      author         = "Chatrchyan, Serguei and others",
      title          = "{Measurement of the Underlying Event Activity at the LHC
                        with sqrt(s)= 7 TeV and Comparison with sqrt(s) = 0.9
                        TeV}",
      collaboration  = "CMS Collaboration",
      year           = "2011",
      eprint         = "1107.0330",
      archivePrefix  = "arXiv",
      primaryClass   = "hep-ex",}'

