Neutral Higgs-pair production at linear colliders within the general two-Higgs-doublet model: Quantum effects and triple Higgs boson self-interactions

The pairwise production of neutral Higgs bosons ( h 0 A 0 , H 0 A 0 ) is analyzed in the context of the future linear colliders, such as the ILC and CLIC, within the general two-Higgs-doublet model (2HDM). The corresponding cross sections are computed at the one-loop level, including the full set of...

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Autores: López Val, David, Solà Peracaula, Joan
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2010
País:España
Institución:Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)
Repositorio:Recercat. Dipósit de la Recerca de Catalunya
OAI Identifier:oai:recercat.cat:2445/131708
Acceso en línea:https://hdl.handle.net/2445/131708
Access Level:acceso abierto
Palabra clave:Física de partícules
Experiments
Bosons de Higgs
Particle physics
Higgs bosons
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spelling Neutral Higgs-pair production at linear colliders within the general two-Higgs-doublet model: Quantum effects and triple Higgs boson self-interactionsLópez Val, DavidSolà Peracaula, JoanFísica de partículesExperimentsBosons de HiggsParticle physicsExperimentsHiggs bosonsThe pairwise production of neutral Higgs bosons ( h 0 A 0 , H 0 A 0 ) is analyzed in the context of the future linear colliders, such as the ILC and CLIC, within the general two-Higgs-doublet model (2HDM). The corresponding cross sections are computed at the one-loop level, including the full set of contributions at order O ( α 3 ew ) together with the leading O ( α 4 ew ) terms, in full compliance with the current phenomenological bounds and the stringent theoretical constraints inherent to the consistency of the model. We uncover regions across the 2HDM parameter space, mainly for low tan  β ∼ 1 and moderate and negative values of the relevant λ 5 parameter, wherein the radiative corrections to the Higgs-pair production cross section, σ ( e + e − → A 0 h 0 / A 0 H 0 ) , can comfortably reach | δ σ | / σ ∼ 50 % . This behavior can be traced back to the enhancement capabilities of the trilinear Higgs self-interactions a trademark feature of the 2HDM, with no counterpart in the minimal supersymmetric standard model (MSSM). The corrections are strongly dependent on the actual value of λ 5 as well as on the Higgs mass spectrum. Interestingly enough, the quantum effects are positive for energies around √ s ≃ 500     GeV , thereby producing a significant enhancement in the expected number of events precisely around the fiducial startup energy of the ILC. The Higgs-pair production rates can be substantial, typically a few tens of femtobarn, therefore amounting to a few thousand events per 500     fb − 1 of integrated luminosity. In contrast, the corrections are negative in the highest energy range (viz. √ s ∼ 1     TeV and above). We conclude that a precise measurement of the 2H final states could carry unambiguous footprints of an extended (nonsupersymmetric) Higgs sector. Finally, to better assess the scope of these effects, we compare the exclusive pairwise production of Higgs bosons with the inclusive gauge boson fusion channels leading to 2 H + X final states, and also with the exclusive triple Higgs boson production. We find that these multiparticle final states can be highly complementary in the overall Higgs bosons search strategy.American Physical Society2019201920102019info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersion31 p.application/pdfhttps://hdl.handle.net/2445/131708Articles publicats en revistes (Física Quàntica i Astrofísica)reponame:Recercat. Dipósit de la Recerca de Catalunyainstname:Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)InglésReproducció del document publicat a: https://doi.org/10.1103/PhysRevD.81.033003Physical Review D, 2010, vol. 81, num. 3, p. 033003https://doi.org/10.1103/PhysRevD.81.033003(c) American Physical Society, 2010info:eu-repo/semantics/openAccessoai:recercat.cat:2445/1317082026-05-29T05:05:01Z
dc.title.none.fl_str_mv Neutral Higgs-pair production at linear colliders within the general two-Higgs-doublet model: Quantum effects and triple Higgs boson self-interactions
title Neutral Higgs-pair production at linear colliders within the general two-Higgs-doublet model: Quantum effects and triple Higgs boson self-interactions
spellingShingle Neutral Higgs-pair production at linear colliders within the general two-Higgs-doublet model: Quantum effects and triple Higgs boson self-interactions
López Val, David
Física de partícules
Experiments
Bosons de Higgs
Particle physics
Experiments
Higgs bosons
title_short Neutral Higgs-pair production at linear colliders within the general two-Higgs-doublet model: Quantum effects and triple Higgs boson self-interactions
title_full Neutral Higgs-pair production at linear colliders within the general two-Higgs-doublet model: Quantum effects and triple Higgs boson self-interactions
title_fullStr Neutral Higgs-pair production at linear colliders within the general two-Higgs-doublet model: Quantum effects and triple Higgs boson self-interactions
title_full_unstemmed Neutral Higgs-pair production at linear colliders within the general two-Higgs-doublet model: Quantum effects and triple Higgs boson self-interactions
title_sort Neutral Higgs-pair production at linear colliders within the general two-Higgs-doublet model: Quantum effects and triple Higgs boson self-interactions
dc.creator.none.fl_str_mv López Val, David
Solà Peracaula, Joan
author López Val, David
author_facet López Val, David
Solà Peracaula, Joan
author_role author
author2 Solà Peracaula, Joan
author2_role author
dc.subject.none.fl_str_mv Física de partícules
Experiments
Bosons de Higgs
Particle physics
Experiments
Higgs bosons
topic Física de partícules
Experiments
Bosons de Higgs
Particle physics
Experiments
Higgs bosons
description The pairwise production of neutral Higgs bosons ( h 0 A 0 , H 0 A 0 ) is analyzed in the context of the future linear colliders, such as the ILC and CLIC, within the general two-Higgs-doublet model (2HDM). The corresponding cross sections are computed at the one-loop level, including the full set of contributions at order O ( α 3 ew ) together with the leading O ( α 4 ew ) terms, in full compliance with the current phenomenological bounds and the stringent theoretical constraints inherent to the consistency of the model. We uncover regions across the 2HDM parameter space, mainly for low tan  β ∼ 1 and moderate and negative values of the relevant λ 5 parameter, wherein the radiative corrections to the Higgs-pair production cross section, σ ( e + e − → A 0 h 0 / A 0 H 0 ) , can comfortably reach | δ σ | / σ ∼ 50 % . This behavior can be traced back to the enhancement capabilities of the trilinear Higgs self-interactions a trademark feature of the 2HDM, with no counterpart in the minimal supersymmetric standard model (MSSM). The corrections are strongly dependent on the actual value of λ 5 as well as on the Higgs mass spectrum. Interestingly enough, the quantum effects are positive for energies around √ s ≃ 500     GeV , thereby producing a significant enhancement in the expected number of events precisely around the fiducial startup energy of the ILC. The Higgs-pair production rates can be substantial, typically a few tens of femtobarn, therefore amounting to a few thousand events per 500     fb − 1 of integrated luminosity. In contrast, the corrections are negative in the highest energy range (viz. √ s ∼ 1     TeV and above). We conclude that a precise measurement of the 2H final states could carry unambiguous footprints of an extended (nonsupersymmetric) Higgs sector. Finally, to better assess the scope of these effects, we compare the exclusive pairwise production of Higgs bosons with the inclusive gauge boson fusion channels leading to 2 H + X final states, and also with the exclusive triple Higgs boson production. We find that these multiparticle final states can be highly complementary in the overall Higgs bosons search strategy.
publishDate 2010
dc.date.none.fl_str_mv 2010
2019
2019
2019
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv https://hdl.handle.net/2445/131708
url https://hdl.handle.net/2445/131708
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv Reproducció del document publicat a: https://doi.org/10.1103/PhysRevD.81.033003
Physical Review D, 2010, vol. 81, num. 3, p. 033003
https://doi.org/10.1103/PhysRevD.81.033003
dc.rights.none.fl_str_mv (c) American Physical Society, 2010
info:eu-repo/semantics/openAccess
rights_invalid_str_mv (c) American Physical Society, 2010
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv 31 p.
application/pdf
dc.publisher.none.fl_str_mv American Physical Society
publisher.none.fl_str_mv American Physical Society
dc.source.none.fl_str_mv Articles publicats en revistes (Física Quàntica i Astrofísica)
reponame:Recercat. Dipósit de la Recerca de Catalunya
instname:Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)
instname_str Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)
reponame_str Recercat. Dipósit de la Recerca de Catalunya
collection Recercat. Dipósit de la Recerca de Catalunya
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15,812429

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