Hamburg 2016 – scientific programme

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T: Fachverband Teilchenphysik

T 100: Elektroschwache Wechselwirkung (Experiment) III

T 100.8: Talk

Thursday, March 3, 2016, 18:30–18:45, VMP8 SR 206

Measurements of Z boson plus jet production cross section with the ATLAS detector using √s=8 TeV data — •Nataliia Kondrashova — DESY, Hamburg, Germany

The Z → ee+jet production provides an important test of perturbative Quantum Chromodynamics and is an important background for many Standard Model processes and beyond Standard Model searches. In addition, the measurement of the Z → ee+jet cross-section as a function of the absolute rapidity and the transverse momentum of jets can provide constraints on the uncertainties in the parton distribution functions. Preliminary results of the double-differential Z → ee+jet production cross-section measurement are presented. The data of 21.3 fb⁻¹ collected with the ATLAS detector at the Large Hadron Collider in 2012 at the centre-of-mass energy √s = 8 TeV are used. Main sources of the systematic uncertainties in the measurement are studied. The measured cross-section is compared to the predictions from Monte Carlo generators based on the leading order matrix elements supplemented by the parton showers.