Off-shell Higgs couplings in H⁎ → ZZ → ℓℓνν

We explore the new physics reach for the off-shell Higgs boson measurement in the pp→H⁎→Z(ℓ+ℓ−)Z(νν¯) channel at the high-luminosity LHC. The new physics sensitivity is parametrized in terms of the Higgs boson width, effective field theory framework, and a non-local Higgs-top coupling form factor. A...

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Main Authors: Dorival Gonçalves, Tao Han, Sze Ching Iris Leung, Han Qin
Format: Article
Language:English
Published: Elsevier 2021-06-01
Series:Physics Letters B
Online Access:http://www.sciencedirect.com/science/article/pii/S0370269321002690
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spelling doaj-aa27654333b94c6eb6fada3ef7597af52021-05-28T04:59:44ZengElsevierPhysics Letters B0370-26932021-06-01817136329Off-shell Higgs couplings in H⁎ → ZZ → ℓℓννDorival Gonçalves0Tao Han1Sze Ching Iris Leung2Han Qin3Department of Physics, Oklahoma State University, Stillwater, OK, 74078, USA; Corresponding author.PITT PACC, Department of Physics and Astronomy, University of Pittsburgh, 3941 O'Hara St., Pittsburgh, PA 15260, USAPITT PACC, Department of Physics and Astronomy, University of Pittsburgh, 3941 O'Hara St., Pittsburgh, PA 15260, USAPITT PACC, Department of Physics and Astronomy, University of Pittsburgh, 3941 O'Hara St., Pittsburgh, PA 15260, USAWe explore the new physics reach for the off-shell Higgs boson measurement in the pp→H⁎→Z(ℓ+ℓ−)Z(νν¯) channel at the high-luminosity LHC. The new physics sensitivity is parametrized in terms of the Higgs boson width, effective field theory framework, and a non-local Higgs-top coupling form factor. Adopting Machine-learning techniques, we demonstrate that the combination of a large signal rate and a precise phenomenological probe for the process energy scale, due to the transverse ZZ mass, leads to significant sensitivities beyond the existing results in the literature for the new physics scenarios considered.http://www.sciencedirect.com/science/article/pii/S0370269321002690
collection DOAJ
language English
format Article
sources DOAJ
author Dorival Gonçalves
Tao Han
Sze Ching Iris Leung
Han Qin
spellingShingle Dorival Gonçalves
Tao Han
Sze Ching Iris Leung
Han Qin
Off-shell Higgs couplings in H⁎ → ZZ → ℓℓνν
Physics Letters B
author_facet Dorival Gonçalves
Tao Han
Sze Ching Iris Leung
Han Qin
author_sort Dorival Gonçalves
title Off-shell Higgs couplings in H⁎ → ZZ → ℓℓνν
title_short Off-shell Higgs couplings in H⁎ → ZZ → ℓℓνν
title_full Off-shell Higgs couplings in H⁎ → ZZ → ℓℓνν
title_fullStr Off-shell Higgs couplings in H⁎ → ZZ → ℓℓνν
title_full_unstemmed Off-shell Higgs couplings in H⁎ → ZZ → ℓℓνν
title_sort off-shell higgs couplings in h⁎ → zz → ℓℓνν
publisher Elsevier
series Physics Letters B
issn 0370-2693
publishDate 2021-06-01
description We explore the new physics reach for the off-shell Higgs boson measurement in the pp→H⁎→Z(ℓ+ℓ−)Z(νν¯) channel at the high-luminosity LHC. The new physics sensitivity is parametrized in terms of the Higgs boson width, effective field theory framework, and a non-local Higgs-top coupling form factor. Adopting Machine-learning techniques, we demonstrate that the combination of a large signal rate and a precise phenomenological probe for the process energy scale, due to the transverse ZZ mass, leads to significant sensitivities beyond the existing results in the literature for the new physics scenarios considered.
url http://www.sciencedirect.com/science/article/pii/S0370269321002690
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AT taohan offshellhiggscouplingsinhzzllnn
AT szechingirisleung offshellhiggscouplingsinhzzllnn
AT hanqin offshellhiggscouplingsinhzzllnn
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