Study the effect of beam energy spread and detector resolution on the search for Higgs boson decays to invisible particles at a future e$^+$ e$^-$ circular collider

We study the expected sensitivity to measure the branching ratio of Higgs boson decays to invisible particles at a future circular $e^+e^-$ collider (FCC-ee) in the process $e^+e^-\rightarrow HZ$ with $Z\rightarrow \ell ^+\ell ^-$ ( $\ell =e$ or $\mu $ ) using an integrated luminosity of 3.5 ab$^{-1...

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Detalles Bibliográficos
Autores principales: Cerri, Olmo, de Gruttola, Michele, Pierini, Maurizio, Podo, Alessandro, Rolandi, Gigi
Lenguaje:eng
Publicado: 2016
Materias:
hep-ex
Particle Physics - Experiment
Acceso en línea:https://dx.doi.org/10.1140/epjc/s10052-017-4680-5
http://cds.cern.ch/record/2150392
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author Cerri, Olmo
de Gruttola, Michele
Pierini, Maurizio
Podo, Alessandro
Rolandi, Gigi
author_facet Cerri, Olmo
de Gruttola, Michele
Pierini, Maurizio
Podo, Alessandro
Rolandi, Gigi
author_sort Cerri, Olmo
collection CERN
description We study the expected sensitivity to measure the branching ratio of Higgs boson decays to invisible particles at a future circular $e^+e^-$ collider (FCC-ee) in the process $e^+e^-\rightarrow HZ$ with $Z\rightarrow \ell ^+\ell ^-$ ( $\ell =e$ or $\mu $ ) using an integrated luminosity of 3.5 ab$^{-1}$ at a center-of-mass energy $\sqrt{s}=240$ GeV. The impact of the energy spread of the FCC-ee beam and of the resolution in the reconstruction of the leptons is discussed. The minimum branching ratio for a $5\sigma $ observation after 3.5 ab$^{-1}$ of data taking is $1.7\pm 0.1\%(stat+syst) $ . The branching ratio exclusion limit at 95% CL is $0.63 \pm 0.22\%((stat+syst))$ .
id cern-2150392
institution Organización Europea para la Investigación Nuclear
language eng
publishDate 2016
record_format invenio
spelling cern-21503922022-08-10T12:35:48Zdoi:10.1140/epjc/s10052-017-4680-5http://cds.cern.ch/record/2150392engCerri, Olmode Gruttola, MichelePierini, MaurizioPodo, AlessandroRolandi, GigiStudy the effect of beam energy spread and detector resolution on the search for Higgs boson decays to invisible particles at a future e$^+$ e$^-$ circular colliderhep-exParticle Physics - ExperimentWe study the expected sensitivity to measure the branching ratio of Higgs boson decays to invisible particles at a future circular $e^+e^-$ collider (FCC-ee) in the process $e^+e^-\rightarrow HZ$ with $Z\rightarrow \ell ^+\ell ^-$ ( $\ell =e$ or $\mu $ ) using an integrated luminosity of 3.5 ab$^{-1}$ at a center-of-mass energy $\sqrt{s}=240$ GeV. The impact of the energy spread of the FCC-ee beam and of the resolution in the reconstruction of the leptons is discussed. The minimum branching ratio for a $5\sigma $ observation after 3.5 ab$^{-1}$ of data taking is $1.7\pm 0.1\%(stat+syst) $ . The branching ratio exclusion limit at 95% CL is $0.63 \pm 0.22\%((stat+syst))$ .We study the expected sensitivity to measure the branching ratio of Higgs boson decays to invisible particles at a future circular \epem collider (FCC-ee) in the process $e^+e^-\to HZ$ with $Z\to \ell^+\ell^-$ ($\ell=e$ or $\mu$) using an integrated luminosity of 3.5 ab$^{-1}$ at a center-of-mass energy $\sqrt{s}=240$ GeV. The impact of the energy spread of the FCC-ee beam and of the resolution in the reconstruction of the leptons is discussed. %Two different detector concepts are considered: a detector corresponding to the CMS reconstruction performances and the expected design of the ILC detector. The minimum branching ratio for a $5\sigma$ observation after 3.5ab$^{-1}$ of data taking is $1.7\pm 0.1\%(stat+syst) $. The branching ratio exclusion limit at 95\% CL is $0.63 \pm 0.22\%((stat+syst))$.arXiv:1605.00100oai:cds.cern.ch:21503922016-04-30
spellingShingle hep-ex
Particle Physics - Experiment
Cerri, Olmo
de Gruttola, Michele
Pierini, Maurizio
Podo, Alessandro
Rolandi, Gigi
Study the effect of beam energy spread and detector resolution on the search for Higgs boson decays to invisible particles at a future e$^+$ e$^-$ circular collider
title Study the effect of beam energy spread and detector resolution on the search for Higgs boson decays to invisible particles at a future e$^+$ e$^-$ circular collider
title_full Study the effect of beam energy spread and detector resolution on the search for Higgs boson decays to invisible particles at a future e$^+$ e$^-$ circular collider
title_fullStr Study the effect of beam energy spread and detector resolution on the search for Higgs boson decays to invisible particles at a future e$^+$ e$^-$ circular collider
title_full_unstemmed Study the effect of beam energy spread and detector resolution on the search for Higgs boson decays to invisible particles at a future e$^+$ e$^-$ circular collider
title_short Study the effect of beam energy spread and detector resolution on the search for Higgs boson decays to invisible particles at a future e$^+$ e$^-$ circular collider
title_sort study the effect of beam energy spread and detector resolution on the search for higgs boson decays to invisible particles at a future e$^+$ e$^-$ circular collider
topic hep-ex
Particle Physics - Experiment
url https://dx.doi.org/10.1140/epjc/s10052-017-4680-5
http://cds.cern.ch/record/2150392
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AT degruttolamichele studytheeffectofbeamenergyspreadanddetectorresolutiononthesearchforhiggsbosondecaystoinvisibleparticlesatafutureeecircularcollider
AT pierinimaurizio studytheeffectofbeamenergyspreadanddetectorresolutiononthesearchforhiggsbosondecaystoinvisibleparticlesatafutureeecircularcollider
AT podoalessandro studytheeffectofbeamenergyspreadanddetectorresolutiononthesearchforhiggsbosondecaystoinvisibleparticlesatafutureeecircularcollider
AT rolandigigi studytheeffectofbeamenergyspreadanddetectorresolutiononthesearchforhiggsbosondecaystoinvisibleparticlesatafutureeecircularcollider

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