Name: CMS_2015_I1310737
Year: 2015
Summary: Jet multiplicity and differential cross-sections of $Z$+jets events in $pp$ at $\sqrt{s} = 7$ TeV
Experiment: CMS
Collider: LHC
InspireID: 1310737
Status: VALIDATED
Reentrant: true
Authors:
- Fabio Cossutti <fabio.cossutti@ts.infn.it>
- Chiara La Licata <chiara.lalicata@ts.infn.it>
References:
- Phys.Rev. D91 (2015) 052008
- http://dx.doi.org/10.1103/PhysRevD.91.052008
- arxiv:1408.3104
- http://inspirehep.net/record/1310737
RunInfo:
  'Run MC generators with Z decaying leptonically into both electrons and muons at 7 TeV CoM energy.
   Order of 5 million unweighted events can give a reasonable global comparison, but precision in the
   high jet multiplicity region/high jet pt may require substantially larger samples or statistical
   enhancement of high jet multiplicities.'
NeedCrossSection: yes
Beams: [p+, p+]
Energies: [7000]
Luminosity_fb: 4.9
Description:
  'Measurements of differential cross sections are presented for
   the production of a Z boson and at least one hadronic jet in
   proton-proton collisions at $\sqrt{s}=7$~TeV, recorded by
   the CMS detector, using a data sample corresponding to an integrated
   luminosity of 4.9 $\text{fb}^{-1}$. The jet multiplicity distribution
   is measured for up to six jets. The differential cross sections are
   measured as a function of jet transverse momentum and pseudorapidity
   for the four highest transverse momentum jets. The distribution of
   the scalar sum of jet transverse momenta is also measured as a function
   of the jet multiplicity. The measurements are compared with theoretical
   predictions at leading and next-to-leading order in perturbative QCD.

   Cuts:
     First two leading electrons or muons with $p_T > 20$ GeV and $|\eta| < 2.4$
     Dilepton invariant mass in the [71,111] GeV range
     Jets $p_T > 30$ GeV and $|\eta| < 2.4$
     $\Delta{R}($lepton,jet$) > 0.5$'
BibKey: Khachatryan:2014zya
BibTeX: '@article{Khachatryan:2014zya,
      author = "Khachatryan, V. and others",
      title = "{Measurements of jet multiplicity and differential
               production cross sections of $Z +$ jets events in
               proton-proton collisions at $\sqrt{s}=7$ TeV}",
      collaboration = "CMS",
      journal = "Phys.Rev.",
      number = "5",
      volume = "D91",
      pages = "052008",
      doi = "10.1103/PhysRevD.91.052008",
      year = "2015",
      eprint = "1408.3104",
      archivePrefix = "arXiv",
      primaryClass = "hep-ex",
      reportNumber = "CMS-SMP-12-017, CERN-PH-EP-2014-205",
      SLACcitation = "%%CITATION = ARXIV:1408.3104;%%",
}'

ReleaseTests:
 - $A LHC-Z-e
 - $A-2 LHC-Z-mu

