Measurements of the differential production cross sections for a Z boson in association with jets in pp collisions at sqrt(s) = 8 TeV - Archive ouverte HAL Access content directly
Journal Articles Journal of High Energy Physics Year : 2017

Measurements of the differential production cross sections for a Z boson in association with jets in pp collisions at sqrt(s) = 8 TeV

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V. Khachatryan
  • Function : Author
S. Baffioni
P. Busson
R. Granier De Cassagnac
P. Paganini
N. Chanon
C. Collard
D. Contardo
M. Gouzevitch
Fabienne Lagarde
M. Lethuillier
V. Sordini
S. Viret

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 sqrt(s)=8 TeV are measured using a data sample collected by the CMS experiment at the LHC corresponding to 19.6 inverse femtobarns. 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.
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Dates and versions

in2p3-01396129 , version 1 (18-12-2018)

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Cite

V. Khachatryan, M. Besançon, F. Couderc, M. Dejardin, D. Denegri, et al.. Measurements of the differential production cross sections for a Z boson in association with jets in pp collisions at sqrt(s) = 8 TeV. Journal of High Energy Physics, 2017, 04 (4), pp.022. ⟨10.1007/JHEP04(2017)022⟩. ⟨in2p3-01396129⟩
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