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Measurement of the $Z/\gamma^*$ boson transverse momentum distribution in $pp$ collisions at $s$ = 7 TeV with the ATLAS detector

. (2014)cite arxiv:1406.3660Comment: 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/STDM-2012-23/.
DOI: 10.1007/JHEP09(2014)145

Abstract

This paper describes a measurement of the $Z/\gamma^*$ boson transverse momentum spectrum using ATLAS proton-proton collision data at a centre-of-mass energy of $s$ = 7 TeV at the LHC. The measurement is performed in the $Z/\gamma^* e^+e^-$ and $Z/\gamma^* \mu^+\mu^-$ 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.

Description

Measurement of the $Z/\gamma^*$ boson transverse momentum distribution in $pp$ collisions at $\sqrt{s}$ = 7 TeV with the ATLAS detector

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