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Measurement of the cross-section of high transverse momentum vector bosons reconstructed as single jets and studies of jet substructure in pp collisions at s√ = 7 TeV with the ATLAS detector


ATLAS Collaboration; Canelli, M F; et al (2014). Measurement of the cross-section of high transverse momentum vector bosons reconstructed as single jets and studies of jet substructure in pp collisions at s√ = 7 TeV with the ATLAS detector. New Journal of Physics, 16:113013.

Abstract

This paper presents a measurement of the cross-section for high transverse momentum W and Z bosons produced in pp collisions and decaying to all-hadronic final states. The data used in the analysis were recorded by the ATLAS detector at the CERN Large Hadron Collider at a centre-of-mass energy of s√=7TeV and correspond to an integrated luminosity of 4.6fb−1. The measurement is performed by reconstructing the boosted W or Z bosons in single jets. The reconstructed jet mass is used to identify the W and Z bosons, and a jet substructure method based on energy cluster information in the jet centre-of-mass frame is used to suppress the large multi-jet background. The cross-section for events with a hadronically decaying W or Z boson, with transverse momentum pT>320GeV and pseudorapidity |η|<1.9, is measured to be σW+Z=8.5±1.7 pb and is compared to next-to-leading-order calculations. The selected events are further used to study jet grooming techniques.

Abstract

This paper presents a measurement of the cross-section for high transverse momentum W and Z bosons produced in pp collisions and decaying to all-hadronic final states. The data used in the analysis were recorded by the ATLAS detector at the CERN Large Hadron Collider at a centre-of-mass energy of s√=7TeV and correspond to an integrated luminosity of 4.6fb−1. The measurement is performed by reconstructing the boosted W or Z bosons in single jets. The reconstructed jet mass is used to identify the W and Z bosons, and a jet substructure method based on energy cluster information in the jet centre-of-mass frame is used to suppress the large multi-jet background. The cross-section for events with a hadronically decaying W or Z boson, with transverse momentum pT>320GeV and pseudorapidity |η|<1.9, is measured to be σW+Z=8.5±1.7 pb and is compared to next-to-leading-order calculations. The selected events are further used to study jet grooming techniques.

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Additional indexing

Item Type:Journal Article, refereed, original work
Communities & Collections:07 Faculty of Science > Physics Institute
Dewey Decimal Classification:530 Physics
Language:English
Date:2014
Deposited On:24 Feb 2015 12:00
Last Modified:27 Apr 2017 23:41
Publisher:IOP Publishing
ISSN:1367-2630
Publisher DOI:https://doi.org/10.1088/1367-2630/16/11/113013

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