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.]

Khachatryan, V., Sirunyan, A., Tumasyan, A., Adam, W., Asilar, E., Bergauer, T., et al. (2017). Measurements of differential production cross sections for a Z boson in association with jets in pp isions at √s=8 TeV. JOURNAL OF HIGH ENERGY PHYSICS, 2017(4) [10.1007/JHEP04(2017)022].

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

BRIANZA, LUCA;DINARDO, MAURO EMANUELE;FIORENDI, SARA;GHEZZI, ALESSIO;GOVONI, PIETRO;MALBERTI, MARTINA;MANZONI, RICCARDO ANDREA;MARZOCCHI, BADDER;MORONI, LUIGI;PAGANONI, MARCO;PIGAZZINI, SIMONE;RAGAZZI, STEFANO;TABARELLI DE FATIS, TOMMASO;Lucchini, M;Gerosa, R;Massironi, A;De Guio, F;
2017

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.]
Articolo in rivista - Articolo scientifico
Hadron-Hadron scattering (experiments); Particle and resonance production; QCD;
English
2017
2017
4
22
open
Khachatryan, V., Sirunyan, A., Tumasyan, A., Adam, W., Asilar, E., Bergauer, T., et al. (2017). Measurements of differential production cross sections for a Z boson in association with jets in pp isions at √s=8 TeV. JOURNAL OF HIGH ENERGY PHYSICS, 2017(4) [10.1007/JHEP04(2017)022].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10281/153036
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