Measurement of the cross-section for electroweak production of dijets in association with a Z boson in pp collisions at s=13 TeV with the ATLAS detector

• Autor(es): Onofre, A. ; Castro, Nuno Filipe Silva Fernandes ; ATLAS Collaboration
• Data: 2017
• Identificador Persistente: http://hdl.handle.net/1822/48930
• Origem: RepositóriUM - Universidade do Minho
• Projeto/bolsa: info:eu-repo/grantAgreement/FCT/3599-PPCDT/143069/PT
• Assunto(s): Ciências Naturais::Ciências Físicas; Science & Technology
• Tipo de Documento: Artigo científico
• Idioma: Inglês
• Contribuidor(es): Universidade do Minho

Descrição

The cross-section for the production of two jets in association with a leptonically decaying Z boson (Zjj ) is measured in proton–proton collisions at a centre-of-mass energy of 13 TeV, using data recorded with the ATLAS detector at the Large Hadron Collider, corresponding to an integrated luminosity of 3.2 fb−1. The electroweak Zjj cross-section is extracted in a fiducial region chosen to enhance the electroweak contribution relative to the dominant Drell–Yan Zjj process, which is constrained using a data-driven approach. The measured fiducial electroweak cross-section is = fb for dijet invariant mass greater than 250 GeV, and fb for dijet invariant mass greater than 1 TeV. Standard Model predictions are in agreement with the measurements. The inclusive Zjj cross-section is also measured in six different fiducial regions with varying contributions from electroweak and Drell–Yan Zjj production.

OIT -Ontario Innovation Trust(IN2P3-CNRS)

info:eu-repo/semantics/publishedVersion