Dr Eleonora Rossi: Publications

Search for the production of a long-lived neutral particle decaying within the ATLAS hadronic calorimeter in association with a $Z$ boson from $pp$ collisions at $\sqrt{s} = 13$ TeV

ArXiv 1811.02542 (2018)

Measurement of the $Zγ\rightarrowν\barνγ$ production cross section in $pp$ collisions at $\sqrt{s}$ = 13 TeV with the ATLAS detector and limits on anomalous triple gauge-boson couplings

ArXiv 1810.04995 (2018)

Measurement of the photon identification efficiencies with the ATLAS detector using LHC Run 2 data collected in 2015 and 2016

ArXiv 1810.05087 (2018)

Measurement of the top quark mass in the $t\bar{t}\to$ lepton+jets channel from $\sqrt{s}=8$ TeV ATLAS data and combination with previous results

ArXiv 1810.01772 (2018)

Constraints on off-shell Higgs boson production and the Higgs boson total width in ZZ → 4ℓ and ZZ → 2ℓ2ν final states with the ATLAS detector

Physics Letters B Elsevier 786 (2018) 223-244

Authors:

M Aaboud, G Aad, B Abbott, Luca Ambroz, Giacomo Artoni, Moritz Backes, Alan Barr, Lydia Beresford, Daniela Bortoletto, Jonathan Burr, Amanda Cooper-Sarkar, James Frost, Elizabeth Gallas, F Guili, Claire Gwenlan, Christopher Hays, B Todd Huffman, Cigdem Issever, Jesse Liu, Luigi Marchese, Koichi Nagai, Michael Nelson, Richard Nickerson, Nurfikri Norjoharuddeen, Santiago Paredes Saenz

Abstract:

A measurement of off-shell Higgs boson production in the and decay channels, where ℓ stands for either an electron or a muon, is performed using data from proton–proton collisions at a centre-of-mass energy of TeV. The data were collected by the ATLAS experiment in 2015 and 2016 at the Large Hadron Collider, and they correspond to an integrated luminosity of . An observed (expected) upper limit on the off-shell Higgs signal strength, defined as the event yield normalised to the Standard Model prediction, of 3.8 (3.4) is obtained at 95% confidence level (CL). Assuming the ratio of the Higgs boson couplings to the Standard Model predictions is independent of the momentum transfer of the Higgs production mechanism considered in the analysis, a combination with the on-shell signal-strength measurements yields an observed (expected) 95% CL upper limit on the Higgs boson total width of 14.4 (15.2) MeV.

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