The triplet or type-II seesaw mechanism is the simplest way to endow neutrinos with mass in the Standard Model (SM). Here we review its associated theory and phenomenology, including restrictions from , , parameters, neutrino experiments, charged lepton flavor violation as well as collider searches. We also examine restrictions coming from requiring consistency of electroweak symmetry breaking, i.e., perturbative unitarity and stability of the vacuum. Finally, we discuss novel effects associated to the scalar mediator of neutrino mass generation namely, (i) rare processes, e.g., decays, at the intensity frontier, and also (ii) four-lepton signatures in colliders at the high-energy frontier. These can be used to probe neutrino properties in an important way, providing a test of the absolute neutrino mass and mass-ordering, as well as of the atmospheric octant. They may also provide the first evidence for charged lepton flavor violation in nature. In contrast, neutrino nonstandard interaction strengths are found to lie below current detectability.
{ "_oai": { "updated": "2022-05-19T08:11:41Z", "id": "oai:repo.scoap3.org:69958", "sets": [ "PRD" ] }, "authors": [ { "raw_name": "Sanjoy Mandal", "affiliations": [ { "country": "South Korea", "value": "Korea Institute for Advanced Study, Seoul 02455, Korea" } ], "surname": "Mandal", "given_names": "Sanjoy", "full_name": "Mandal, Sanjoy" }, { "raw_name": "O.\u2009G. Miranda", "affiliations": [ { "country": "Mexico", "value": "Departamento de F\u00edsica, Centro de Investigaci\u00f3n y de Estudios Avanzados del IPN Apartado Postal 14-740 07000 Ciudad de M\u00e9xico, Mexico" } ], "surname": "Miranda", "given_names": "O.\u2009G.", "full_name": "Miranda, O.\u2009G." }, { "raw_name": "G. Sanchez Garcia", "affiliations": [ { "country": "Mexico", "value": "Departamento de F\u00edsica, Centro de Investigaci\u00f3n y de Estudios Avanzados del IPN Apartado Postal 14-740 07000 Ciudad de M\u00e9xico, Mexico" } ], "surname": "Garcia", "given_names": "G. Sanchez", "full_name": "Garcia, G. Sanchez" }, { "raw_name": "J.\u2009W.\u2009F. Valle", "affiliations": [ { "country": "Spain", "value": "AHEP Group, Institut de F\u00edsica Corpuscular - C.S.I.C./Universitat de Val\u00e8ncia, Parc Cientific de Paterna. C/Catedratico Jos\u00e9 Beltr\u00e1n, 2 E-46980 Paterna (Val\u00e8ncia), Spain" } ], "surname": "Valle", "given_names": "J.\u2009W.\u2009F.", "full_name": "Valle, J.\u2009W.\u2009F." }, { "raw_name": "Xun-Jie Xu", "affiliations": [ { "country": "China", "value": "Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China" } ], "surname": "Xu", "given_names": "Xun-Jie", "full_name": "Xu, Xun-Jie" } ], "titles": [ { "source": "APS", "title": "Toward deconstructing the simplest seesaw mechanism" } ], "dois": [ { "value": "10.1103/PhysRevD.105.095020" } ], "publication_info": [ { "journal_volume": "105", "journal_title": "Physical Review D", "material": "article", "journal_issue": "9", "year": 2022 } ], "$schema": "http://repo.scoap3.org/schemas/hep.json", "acquisition_source": { "date": "2022-05-19T08:05:56.092976", "source": "APS", "method": "APS", "submission_number": "6bd14ca2d74a11eca1a1661ec451a4e4" }, "page_nr": [ 32 ], "license": [ { "url": "https://creativecommons.org/licenses/by/4.0/", "license": "CC-BY-4.0" } ], "copyright": [ { "statement": "Published by the American Physical Society", "year": "2022" } ], "control_number": "69958", "record_creation_date": "2022-05-19T08:05:56.093019", "_files": [ { "checksum": "md5:128eca9380c7867df7a568c6eb4eea3f", "filetype": "pdf", "bucket": "9b6f9d9f-f471-43db-80b4-de1a550e5910", "version_id": "9900834c-03a8-4a81-90c8-6696c68ab91b", "key": "10.1103/PhysRevD.105.095020.pdf", "size": 6334209 }, { "checksum": "md5:cefad02bbb89bc691b859cbd621f2192", "filetype": "xml", "bucket": "9b6f9d9f-f471-43db-80b4-de1a550e5910", "version_id": "ed6e8234-0a86-4fb9-af4e-55ef092b4190", "key": "10.1103/PhysRevD.105.095020.xml", "size": 622356 } ], "collections": [ { "primary": "HEP" }, { "primary": "Citeable" }, { "primary": "Published" } ], "arxiv_eprints": [ { "categories": [ "hep-ph" ], "value": "2203.06362" } ], "abstracts": [ { "source": "APS", "value": "The triplet or type-II seesaw mechanism is the simplest way to endow neutrinos with mass in the Standard Model (SM). Here we review its associated theory and phenomenology, including restrictions from <math><mi>S</mi></math>, <math><mi>T</mi></math>, <math><mi>U</mi></math> parameters, neutrino experiments, charged lepton flavor violation as well as collider searches. We also examine restrictions coming from requiring consistency of electroweak symmetry breaking, i.e., perturbative unitarity and stability of the vacuum. Finally, we discuss novel effects associated to the scalar mediator of neutrino mass generation namely, (i) rare processes, e.g., <math><mrow><msub><mrow><mi>l</mi></mrow><mrow><mi>\u03b1</mi></mrow></msub><mo>\u2192</mo><msub><mrow><mi>l</mi></mrow><mrow><mi>\u03b2</mi></mrow></msub><mi>\u03b3</mi></mrow></math> decays, at the intensity frontier, and also (ii) four-lepton signatures in colliders at the high-energy frontier. These can be used to probe neutrino properties in an important way, providing a test of the absolute neutrino mass and mass-ordering, as well as of the atmospheric octant. They may also provide the first evidence for charged lepton flavor violation in nature. In contrast, neutrino nonstandard interaction strengths are found to lie below current detectability." } ], "imprints": [ { "date": "2022-05-17", "publisher": "APS" } ] }