CMS-PAS-SMP-14-005

CMS-PAS-SMP-14-005
Measurement of the Z/gamma*+jets/photon+jets cross section ratio in pp collisions at sqrt(s)=8 TeV
CMS Collaboration
2014

Abstract: We present a measurement of the cross section and ratios of the cross sections of $Z/\gamma^{}$ plus jets and photon plus jets events in proton-proton collisions, as a function of the vector boson transverse momentum. The data were collected with the CMS detector at $\sqrt{s} = 8$ TeV, corresponding to an integrated luminosity of 19.7 $\text{fb}^{-1}$ . The measurement is performed for vector bosons that have a transverse momentum larger than $p_{T} > 100$ GeV, and for different jet multiplicities. Comparisons between the data and predictions from several QCD calculations are also presented for the vector boson transverse momenta for the photon and for the $Z$ separately, in different jet multiplicities. We also examine ratios between the transverse momentum for $Z/\gamma^{}$ plus jets and hadronic quantities.
Links: CDS record (PDF) ; inSPIRE record ; Public twiki page ; CADI line (restricted) ; These preliminary results are superseded in this paper, JHEP 10 (2015) 128 [Err: JHEP 04 (2016) 010]. The superseded preliminary plots can be found here.

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