Measurement of the $Z/\gamma^*$ boson transverse momentum distribution in $pp$ collisions at $\sqrt{s}$ = 7 TeV with the ATLAS detector
Abstract
This paper describes a measurement of the $Z/\gamma^*$ boson transverse momentum spectrum using ATLAS protonproton collision data at a centreofmass energy of $\sqrt{s}$ = 7 TeV at the LHC. The measurement is performed in the $Z/\gamma^* \rightarrow e^+e^$ and $Z/\gamma^* \rightarrow \mu^+\mu^$ channels, using data corresponding to an integrated luminosity of 4.7 fb$^{1}$. Normalized differential cross sections as a function of the $Z/\gamma^*$ boson transverse momentum are measured for transverse momenta up to 800 GeV. The measurement is performed inclusively for $Z/\gamma^*$ rapidities up to 2.4, as well as in three rapidity bins. The channel results are combined, compared to perturbative and resummed QCD calculations and used to constrain the parton shower parameters of Monte Carlo generators.
 Publication:

arXiv eprints
 Pub Date:
 June 2014
 arXiv:
 arXiv:1406.3660
 Bibcode:
 2014arXiv1406.3660A
 Keywords:

 High Energy Physics  Experiment
 EPrint:
 32 pages + author list + cover pages (55 pages total), 11 figures, 6 tables, submitted to JHEP, All figures including auxiliary figures are available at http://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PAPERS/STDM201223/