Please use this identifier to cite or link to this item:
Scopus Web of Science® Altmetric
Type: Journal article
Title: Measurement of the jet mass in high transverse momentum Z(→bb‾)γ production at √s=13TeV using the ATLAS detector
Other Titles: Measurement of the jet mass in high transverse momentum Z(-> bb -bar)gamma production at root s=13TeV using the ATLAS detector
Author: Aad, G.
Abbott, B.
Abbott, D.C.
Abdinov, O.
Abed Abud, A.
Abeling, K.
Abhayasinghe, D.K.
Abidi, S.H.
AbouZeid, O.S.
Abraham, N.L.
Abramowicz, H.
Abreu, H.
Abulaiti, Y.
Acharya, B.S.
Achkar, B.
Adachi, S.
Adam, L.
Adam Bourdarios, C.
Adamczyk, L.
Adamek, L.
et al.
Citation: Physics Letters B: Nuclear Physics and Particle Physics, 2021; 812:135991-135991
Publisher: Elsevier
Issue Date: 2021
ISSN: 0370-2693
Statement of
G. Aad, B. Abbott, D.C. Abbott … Paul Jackson … Martin White … Harish Potti ... et al.
Abstract: The integrated fiducial cross-section and unfolded differential jet mass spectrum of high transverse momentum Z→bbdecays are measured in Zγevents in proton–proton collisions at √s=13 TeV. The data analysed were collected between 2015 and 2016 with the ATLAS detector at the Large Hadron Collider and correspond to an integrated luminosity of 36.1fb−1. Photons are required to have a transverse momentum pT>175 GeV. The Z→bbdecay is reconstructed using a jet with pT>200 GeV, found with the anti-ktR =1.0jet algorithm, and groomed to remove soft and wide-angle radiation and to mitigate contributions from the underlying event and additional proton–proton collisions. Two different but related measurements are performed using two jet grooming definitions for reconstructing the Z→bbdecay: trimming and soft drop. These algorithms differ in their experimental and phenomenological implications regarding jet mass reconstruction and theoretical precision. To identify Zbosons, b-tagged R =0.2track-jets matched to the groomed large-Rcalorimeter jet are used as a proxy for the b-quarks. The signal yield is determined from fits of the data-driven background templates to the different jet mass distributions for the two grooming methods. Integrated fiducial cross-sections and unfolded jet mass spectra for each grooming method are compared with leading-order theoretical predictions. The results are found to be in good agreement with Standard Model expectations within the current statistical and systematic uncertainties.
Rights: © 2020 The Author. Published by Elsevier B.V. This is an open access article under the CC BY license ( Funded by SCOAP3
DOI: 10.1016/j.physletb.2020.135991
Published version:
Appears in Collections:Aurora harvest 8
Physics publications

Files in This Item:
File Description SizeFormat 
hdl_130153.pdfPublished version858.11 kBAdobe PDFView/Open

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.