/ hep-ex CMS-SMP-17-002

Measurement of differential cross sections in the $\phi^*$ variable for inclusive Z boson production in pp collisions at $\sqrt{s}=$ 8 TeV

Abstract: Measurements of differential cross sections d$\sigma$/d$\phi^*$ and double-differential cross sections d$^2\sigma$/d$\phi^*\,$d$|y|$ for inclusive Z boson production are presented using the dielectron and dimuon final states. The kinematic observable $\phi^*$ correlates with the dilepton transverse momentum but has better resolution, and $y$ is the dilepton rapidity. The analysis is based on data collected with the CMS experiment at a centre-of-mass energy of 8 TeV corresponding to an integrated luminosity of 19.7 fb$^{-1}$. The normalised cross section (1/$\sigma$)$\,$d$\sigma$/d$\phi^*$, within the fiducial kinematic region, is measured with a precision of better than 0.5% for $\phi^*$<1. The measurements are compared to theoretical predictions and they agree, typically, within few percent.

Note: *Temporary entry*; Submitted to JHEP. All figures and tables can be found at http://cms-results.web.cern.ch/cms-results/public-results/publications/SMP-17-002 (CMS Public Pages)'

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Запись создана 2017-11-02, последняя модификация 2017-11-02

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