Search strategies for pair production of heavy Higgs bosons decaying invisibly at the LHC.
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| Title: | Search strategies for pair production of heavy Higgs bosons decaying invisibly at the LHC. |
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| Authors: | Arganda, E.1 ernesto.arganda@fisica.unlp.edu.ar, Diaz-Cruz, J.L.2,3 jldiaz@fcfm.buap.mx, Mileo, N.1 mileo@fisica.unlp.edu.ar, Morales, R.A.1 roberto.morales@fisica.unlp.edu.ar, Szynkman, A.1 szynkman@fisica.unlp.edu.ar |
| Source: | Nuclear Physics B. Apr2018, Vol. 929, p171-192. 22p. |
| Subjects: | Pair production, Higgs bosons, Particle decays, Large Hadron Collider, Dark matter |
| Abstract: | The search for heavy Higgs bosons at the LHC represents an intense experimental program, carried out by the ATLAS and CMS collaborations, which includes the hunt for invisible Higgs decays and dark matter candidates. No significant deviations from the SM backgrounds have been observed in any of these searches, imposing significant constraints on the parameter space of different new physics models with an extended Higgs sector. Here we discuss an alternative search strategy for heavy Higgs bosons decaying invisibly at the LHC, focusing on the pair production of a heavy scalar H together with a pseudoscalar A , through the production mode q q ¯ → Z ⁎ → H A . We identify as the most promising signal the final state made up of 4 b + E T miss , coming from the heavy scalar decay mode H → h h → b b ¯ b b ¯ , with h being the discovered SM-like Higgs boson with m h = 125 GeV , together with the invisible channel of the pseudoscalar. We work within the context of simplified MSSM scenarios that contain quite heavy sfermions of most types with O ( 10 ) TeV masses, while the stops are heavy enough to reproduce the 125 GeV mass for the lightest SM-like Higgs boson. By contrast, the gauginos/higgsinos and the heavy MSSM Higgs bosons have masses near the EW scale. Our search strategies, for a LHC center-of-mass energy of s = 14 TeV , allow us to obtain statistical significances of the signal over the SM backgrounds with values up to ∼ 1.6 σ and ∼ 3 σ , for total integrated luminosities of 300 fb − 1 and 1000 fb − 1 , respectively. [ABSTRACT FROM AUTHOR] |
| Copyright of Nuclear Physics B is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) | |
| Database: | Engineering Source |
| FullText | Text: Availability: 0 |
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| Header | DbId: egs DbLabel: Engineering Source An: 128391633 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
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| Items | – Name: Title Label: Title Group: Ti Data: Search strategies for pair production of heavy Higgs bosons decaying invisibly at the LHC. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Arganda%2C+E%2E%22">Arganda, E.</searchLink><relatesTo>1</relatesTo><i> ernesto.arganda@fisica.unlp.edu.ar</i><br /><searchLink fieldCode="AR" term="%22Diaz-Cruz%2C+J%2EL%2E%22">Diaz-Cruz, J.L.</searchLink><relatesTo>2,3</relatesTo><i> jldiaz@fcfm.buap.mx</i><br /><searchLink fieldCode="AR" term="%22Mileo%2C+N%2E%22">Mileo, N.</searchLink><relatesTo>1</relatesTo><i> mileo@fisica.unlp.edu.ar</i><br /><searchLink fieldCode="AR" term="%22Morales%2C+R%2EA%2E%22">Morales, R.A.</searchLink><relatesTo>1</relatesTo><i> roberto.morales@fisica.unlp.edu.ar</i><br /><searchLink fieldCode="AR" term="%22Szynkman%2C+A%2E%22">Szynkman, A.</searchLink><relatesTo>1</relatesTo><i> szynkman@fisica.unlp.edu.ar</i> – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22Nuclear+Physics+B%22">Nuclear Physics B</searchLink>. Apr2018, Vol. 929, p171-192. 22p. – Name: Subject Label: Subjects Group: Su Data: <searchLink fieldCode="DE" term="%22Pair+production%22">Pair production</searchLink><br /><searchLink fieldCode="DE" term="%22Higgs+bosons%22">Higgs bosons</searchLink><br /><searchLink fieldCode="DE" term="%22Particle+decays%22">Particle decays</searchLink><br /><searchLink fieldCode="DE" term="%22Large+Hadron+Collider%22">Large Hadron Collider</searchLink><br /><searchLink fieldCode="DE" term="%22Dark+matter%22">Dark matter</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: The search for heavy Higgs bosons at the LHC represents an intense experimental program, carried out by the ATLAS and CMS collaborations, which includes the hunt for invisible Higgs decays and dark matter candidates. No significant deviations from the SM backgrounds have been observed in any of these searches, imposing significant constraints on the parameter space of different new physics models with an extended Higgs sector. Here we discuss an alternative search strategy for heavy Higgs bosons decaying invisibly at the LHC, focusing on the pair production of a heavy scalar H together with a pseudoscalar A , through the production mode q q ¯ → Z ⁎ → H A . We identify as the most promising signal the final state made up of 4 b + E T miss , coming from the heavy scalar decay mode H → h h → b b ¯ b b ¯ , with h being the discovered SM-like Higgs boson with m h = 125 GeV , together with the invisible channel of the pseudoscalar. We work within the context of simplified MSSM scenarios that contain quite heavy sfermions of most types with O ( 10 ) TeV masses, while the stops are heavy enough to reproduce the 125 GeV mass for the lightest SM-like Higgs boson. By contrast, the gauginos/higgsinos and the heavy MSSM Higgs bosons have masses near the EW scale. Our search strategies, for a LHC center-of-mass energy of s = 14 TeV , allow us to obtain statistical significances of the signal over the SM backgrounds with values up to ∼ 1.6 σ and ∼ 3 σ , for total integrated luminosities of 300 fb − 1 and 1000 fb − 1 , respectively. [ABSTRACT FROM AUTHOR] – Name: AbstractSuppliedCopyright Label: Group: Ab Data: <i>Copyright of Nuclear Physics B is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.) |
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| RecordInfo | BibRecord: BibEntity: Identifiers: – Type: doi Value: 10.1016/j.nuclphysb.2018.02.004 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 22 StartPage: 171 Subjects: – SubjectFull: Pair production Type: general – SubjectFull: Higgs bosons Type: general – SubjectFull: Particle decays Type: general – SubjectFull: Large Hadron Collider Type: general – SubjectFull: Dark matter Type: general Titles: – TitleFull: Search strategies for pair production of heavy Higgs bosons decaying invisibly at the LHC. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Arganda, E. – PersonEntity: Name: NameFull: Diaz-Cruz, J.L. – PersonEntity: Name: NameFull: Mileo, N. – PersonEntity: Name: NameFull: Morales, R.A. – PersonEntity: Name: NameFull: Szynkman, A. IsPartOfRelationships: – BibEntity: Dates: – D: 01 M: 04 Text: Apr2018 Type: published Y: 2018 Identifiers: – Type: issn-print Value: 05503213 Numbering: – Type: volume Value: 929 Titles: – TitleFull: Nuclear Physics B Type: main |
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