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Measurements of differential cross sections for associated production of a  W  boson and jets in proton-proton collisions at  √ s = 8 TeV
Journal article   Open access   Peer reviewed

Measurements of differential cross sections for associated production of a W boson and jets in proton-proton collisions at √ s = 8 TeV

CMS Collaboration, Maria Florencia Canelli, Benjamin Kilminster, Thea K Aarrestad, Lea Caminada, Annapaoloa De Cosa, Riccardo Del Burgo, Silvio Donato, Camilla Galloni, Andreas Hinzmann, …
Phyical review. D. (2016), Vol.95(5), 052002
2017
DOI: 10.1103/PhysRevD.95.052002
url
https://doi.org/10.1103/PhysRevD.95.052002View
Published (Version of record) Open Access

Abstract

Differential cross sections for a W boson produced in association with jets are measured in a data sample of proton-proton collisions at a center-of-mass energy of 8 TeV recorded with the CMS detector and corresponding to an integrated luminosity of 19.6 $fb^{−1}$. The W bosons are identified through their decay mode W→μν. The cross sections are reported as functions of jet multiplicity, transverse momenta, and the scalar sum of jet transverse momenta ($H_T$) for different jet multiplicities. Distributions of the angular correlations between the jets and the muon are examined, as well as the average number of jets as a function of $H_T$ and as a function of angular variables. The measured differential cross sections are compared with tree-level and higher-order recent event generators, as well as next-to-leading-order and next-to-next-to-leading-order theoretical predictions. The agreement of the generators with the measurements builds confidence in their use for the simulation of W + jets background processes in searches for new physics at the LHC.
Physics Physics Institute

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