Measurements of differential production cross sections for a Z boson in association with jets in pp isions at √s=8 TeV

The CMS collaboration

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Abstract

Cross sections for the production of a Z boson in association with jets in proton-proton collisions at a centre-of-mass energy of s=8 TeV are measured using a data sample collected by the CMS experiment at the LHC corresponding to 19.6 fb−1. Differential cross sections are presented as functions of up to three observables that describe the jet kinematics and the jet activity. Correlations between the azimuthal directions and the rapidities of the jets and the Z boson are studied in detail. The predictions of a number of multileg generators with leading or next-to-leading order accuracy are compared with the measurements. The comparison shows the importance of including multi-parton contributions in the matrix elements and the improvement in the predictions when next-to-leading order terms are included.[Figure not available: see fulltext.]

Lingua originaleInglese
Numero di articolo22
RivistaJournal of High Energy Physics
Volume2017
Numero di pubblicazione4
DOI
Stato di pubblicazionePubblicato - 1 apr 2017

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