Two Higgs Doublet Models (2HDM) provide a simple framework for new physics models with an extended Higgs sector. The current LHC results, including both direct searches for additional non-Standard Model (SM) Higgs bosons, as well as precision measurements of the SM-like Higgs couplings, already provide strong constraints on the 2HDM parameter spaces. In this paper, we examine those constraints for the neutral scalars in the Type-I and Type-II 2HDM. In addition to the direct search channels with SM final states: H/A → $$ f\overline{f} $$ , VV, Vh, hh, we study in particular the exotic decay channels of H/A → AZ/HZ once there is a mass hierarchy between the non-SM Higgses. We found that H/A → AZ/H Z channel has unique sensitivity to the alignment limit region which remains unconstrained by conventional searches and Higgs precision measurements. This mode also extends the reach at intermediate t β for heavy m A that are not covered by the other direct searches.
{ "_oai": { "updated": "2020-09-24T01:07:13Z", "id": "oai:repo.scoap3.org:55144", "sets": [ "JHEP" ] }, "authors": [ { "affiliations": [ { "country": "USA", "value": "SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, CA, 94025, U.S.A.", "organization": "SLAC National Accelerator Laboratory" } ], "surname": "Kling", "email": "felixk@slac.stanford.edu", "full_name": "Kling, Felix", "given_names": "Felix" }, { "affiliations": [ { "country": "USA", "value": "Department of Physics, University of Arizona, Tucson, AZ, 85721, U.S.A.", "organization": "University of Arizona" } ], "surname": "Su", "email": "shufang@email.arizona.edu", "full_name": "Su, Shufang", "given_names": "Shufang" }, { "affiliations": [ { "country": "Australia", "value": "ARC Centre of Excellence for Particle Physics at the Terascale, Department of Physics, University of Adelaide, Adelaide, South Australia, 5005, Australia", "organization": "University of Adelaide" } ], "surname": "Su", "email": "wei.su@adelaide.edu.au", "full_name": "Su, Wei", "given_names": "Wei" } ], "titles": [ { "source": "Springer", "title": "2HDM neutral scalars under the LHC" } ], "dois": [ { "value": "10.1007/JHEP06(2020)163" } ], "publication_info": [ { "page_end": "23", "journal_title": "Journal of High Energy Physics", "material": "article", "journal_volume": "2020", "artid": "JHEP06(2020)163", "year": 2020, "page_start": "1", "journal_issue": "6" } ], "$schema": "http://repo.scoap3.org/schemas/hep.json", "acquisition_source": { "date": "2020-09-24T02:31:46.084407", "source": "Springer", "method": "Springer", "submission_number": "1499bd02fdfd11eabd0e02163e01809a" }, "page_nr": [ 23 ], "license": [ { "url": "https://creativecommons.org/licenses/by/3.0", "license": "CC-BY-3.0" } ], "copyright": [ { "holder": "The Author(s)", "year": "2020" } ], "control_number": "55144", "record_creation_date": "2020-07-08T23:40:09.705975", "_files": [ { "checksum": "md5:c9a220e3d01cee03dedb3776f332b1e0", "filetype": "xml", "bucket": "9b60701c-6bfa-434a-88ae-a44b84d2ece1", "version_id": "ccfb70cd-1a31-4a86-9f87-6a11684ffece", "key": "10.1007/JHEP06(2020)163.xml", "size": 12661 }, { "checksum": "md5:e0c9d67801028dee1c692d7317db1a7c", "filetype": "pdf/a", "bucket": "9b60701c-6bfa-434a-88ae-a44b84d2ece1", "version_id": "2540b708-909d-4d21-88ea-92ae24edc2b3", "key": "10.1007/JHEP06(2020)163_a.pdf", "size": 1013756 } ], "collections": [ { "primary": "Journal of High Energy Physics" } ], "arxiv_eprints": [ { "categories": [ "hep-ph", "hep-ex" ], "value": "2004.04172" } ], "abstracts": [ { "source": "Springer", "value": "Two Higgs Doublet Models (2HDM) provide a simple framework for new physics models with an extended Higgs sector. The current LHC results, including both direct searches for additional non-Standard Model (SM) Higgs bosons, as well as precision measurements of the SM-like Higgs couplings, already provide strong constraints on the 2HDM parameter spaces. In this paper, we examine those constraints for the neutral scalars in the Type-I and Type-II 2HDM. In addition to the direct search channels with SM final states: H/A \u2192 <math> <mi>f</mi> <mover> <mi>f</mi> <mo>\u00af</mo> </mover> </math> $$ f\\overline{f} $$ , VV, Vh, hh, we study in particular the exotic decay channels of H/A \u2192 AZ/HZ once there is a mass hierarchy between the non-SM Higgses. We found that H/A \u2192 AZ/H Z channel has unique sensitivity to the alignment limit region which remains unconstrained by conventional searches and Higgs precision measurements. This mode also extends the reach at intermediate t \u03b2 for heavy m A that are not covered by the other direct searches." } ], "imprints": [ { "date": "2020-06-26", "publisher": "Springer" } ] }