Search for Higgs boson decays to beyond-the-Standard-Model light bosons in four-lepton events with the ATLAS detector at   s√=13s=13  TeV

Agni Bethani; Ian Connelly; Brian Cox; Cinzia Da Via; Nicholas Dann; Alessandra Forti; David Lack; Frederick Loebinger; Jiri Masik; Stephen Menary; Francisca Munoz Sanchez; Alexander Oh; Emily Orgill; Joleen Pater; Yvonne Peters; Andrew Pilkington; Darren Price; Yang Qin; Jacob Rawling; Rhys Roberts; Savanna Shaw; Stephen Watts; Fabian Wilk; Terence Wyatt; The ATLAS Collaboration

doi:10.1007/JHEP06(2018)166

Search for Higgs boson decays to beyond-the-Standard-Model light bosons in four-lepton events with the ATLAS detector at s√=13s=13 TeV

Agni Bethani, Ian Connelly, Brian Cox, Cinzia Da Via, Nicholas Dann, Alessandra Forti, David Lack, Frederick Loebinger, Jiri Masik, Stephen Menary, Francisca Munoz Sanchez, Alexander Oh, Emily Orgill, Joleen Pater, Yvonne Peters, Andrew Pilkington, Darren Price, Yang Qin, Jacob Rawling, Rhys RobertsSavanna Shaw, Stephen Watts, Fabian Wilk, Terence Wyatt, The ATLAS Collaboration

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Abstract

A search is conducted for a beyond-the-Standard-Model boson using events where a Higgs boson with mass 125 GeV decays to four leptons (ℓ = e or μ). This decay is presumed to occur via an intermediate state which contains one or two on-shell, promptly decaying bosons: H → ZX/XX → 4ℓ, where X is a new vector boson Zd or pseudoscalar a with mass between 1 and 60 GeV. The search uses pp collision data collected with the ATLAS detector at the LHC with an integrated luminosity of 36.1 fb−1 at a centre-of-mass energy s√=13s=13 TeV. No significant excess of events above Standard Model background predictions is observed; therefore, upper limits at 95% confidence level are set on modelindependent fiducial cross-sections, and on the Higgs boson decay branching ratios to vector and pseudoscalar bosons in two benchmark models.

Original language	English
Pages (from-to)	750-767
Number of pages	17
Journal	The Journal of High Energy Physics
Early online date	29 Jun 2018
DOIs	https://doi.org/10.1007/JHEP06(2018)166
Publication status	Published - 2018

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Bethani, A., Connelly, I., Cox, B., Da Via, C., Dann, N., Forti, A., Lack, D., Loebinger, F., Masik, J., Menary, S., Munoz Sanchez, F., Oh, A., Orgill, E., Pater, J., Peters, Y., Pilkington, A., Price, D., Qin, Y., Rawling, J., ... The ATLAS Collaboration (2018). Search for Higgs boson decays to beyond-the-Standard-Model light bosons in four-lepton events with the ATLAS detector at s√=13s=13 TeV. The Journal of High Energy Physics, 750-767. https://doi.org/10.1007/JHEP06(2018)166

@article{aef5d7176f41430592a376d74e437a40,

title = "Search for Higgs boson decays to beyond-the-Standard-Model light bosons in four-lepton events with the ATLAS detector at s√=13s=13 TeV",

abstract = "A search is conducted for a beyond-the-Standard-Model boson using events where a Higgs boson with mass 125 GeV decays to four leptons (ℓ = e or μ). This decay is presumed to occur via an intermediate state which contains one or two on-shell, promptly decaying bosons: H → ZX/XX → 4ℓ, where X is a new vector boson Zd or pseudoscalar a with mass between 1 and 60 GeV. The search uses pp collision data collected with the ATLAS detector at the LHC with an integrated luminosity of 36.1 fb−1 at a centre-of-mass energy s√=13s=13 TeV. No significant excess of events above Standard Model background predictions is observed; therefore, upper limits at 95% confidence level are set on modelindependent fiducial cross-sections, and on the Higgs boson decay branching ratios to vector and pseudoscalar bosons in two benchmark models.",

author = "Agni Bethani and Ian Connelly and Brian Cox and {Da Via}, Cinzia and Nicholas Dann and Alessandra Forti and David Lack and Frederick Loebinger and Jiri Masik and Stephen Menary and {Munoz Sanchez}, Francisca and Alexander Oh and Emily Orgill and Joleen Pater and Yvonne Peters and Andrew Pilkington and Darren Price and Yang Qin and Jacob Rawling and Rhys Roberts and Savanna Shaw and Stephen Watts and Fabian Wilk and Terence Wyatt and {The ATLAS Collaboration}",

year = "2018",

doi = "10.1007/JHEP06(2018)166",

language = "English",

pages = "750--767",

journal = "The Journal of High Energy Physics",

issn = "1126-6708",

publisher = "Springer Nature",

}

Bethani, A, Connelly, I, Cox, B, Da Via, C, Dann, N, Forti, A, Lack, D, Loebinger, F, Masik, J, Menary, S, Munoz Sanchez, F , Oh, A, Orgill, E, Pater, J, Peters, Y , Pilkington, A , Price, D, Qin, Y, Rawling, J, Roberts, R, Shaw, S, Watts, S, Wilk, F, Wyatt, T & The ATLAS Collaboration 2018, 'Search for Higgs boson decays to beyond-the-Standard-Model light bosons in four-lepton events with the ATLAS detector at s√=13s=13 TeV', The Journal of High Energy Physics, pp. 750-767. https://doi.org/10.1007/JHEP06(2018)166

TY - JOUR

T1 - Search for Higgs boson decays to beyond-the-Standard-Model light bosons in four-lepton events with the ATLAS detector at s√=13s=13 TeV

AU - Bethani, Agni

AU - Connelly, Ian

AU - Cox, Brian

AU - Da Via, Cinzia

AU - Dann, Nicholas

AU - Forti, Alessandra

AU - Lack, David

AU - Loebinger, Frederick

AU - Masik, Jiri

AU - Menary, Stephen

AU - Munoz Sanchez, Francisca

AU - Oh, Alexander

AU - Orgill, Emily

AU - Pater, Joleen

AU - Peters, Yvonne

AU - Pilkington, Andrew

AU - Price, Darren

AU - Qin, Yang

AU - Rawling, Jacob

AU - Roberts, Rhys

AU - Shaw, Savanna

AU - Watts, Stephen

AU - Wilk, Fabian

AU - Wyatt, Terence

AU - The ATLAS Collaboration,

PY - 2018

Y1 - 2018

N2 - A search is conducted for a beyond-the-Standard-Model boson using events where a Higgs boson with mass 125 GeV decays to four leptons (ℓ = e or μ). This decay is presumed to occur via an intermediate state which contains one or two on-shell, promptly decaying bosons: H → ZX/XX → 4ℓ, where X is a new vector boson Zd or pseudoscalar a with mass between 1 and 60 GeV. The search uses pp collision data collected with the ATLAS detector at the LHC with an integrated luminosity of 36.1 fb−1 at a centre-of-mass energy s√=13s=13 TeV. No significant excess of events above Standard Model background predictions is observed; therefore, upper limits at 95% confidence level are set on modelindependent fiducial cross-sections, and on the Higgs boson decay branching ratios to vector and pseudoscalar bosons in two benchmark models.

AB - A search is conducted for a beyond-the-Standard-Model boson using events where a Higgs boson with mass 125 GeV decays to four leptons (ℓ = e or μ). This decay is presumed to occur via an intermediate state which contains one or two on-shell, promptly decaying bosons: H → ZX/XX → 4ℓ, where X is a new vector boson Zd or pseudoscalar a with mass between 1 and 60 GeV. The search uses pp collision data collected with the ATLAS detector at the LHC with an integrated luminosity of 36.1 fb−1 at a centre-of-mass energy s√=13s=13 TeV. No significant excess of events above Standard Model background predictions is observed; therefore, upper limits at 95% confidence level are set on modelindependent fiducial cross-sections, and on the Higgs boson decay branching ratios to vector and pseudoscalar bosons in two benchmark models.

U2 - 10.1007/JHEP06(2018)166

DO - 10.1007/JHEP06(2018)166

M3 - Article

SN - 1126-6708

SP - 750

EP - 767

JO - The Journal of High Energy Physics

JF - The Journal of High Energy Physics

ER -

Search for Higgs boson decays to beyond-the-Standard-Model light bosons in four-lepton events with the ATLAS detector at s√=13s=13 TeV

Abstract

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