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ρ parameter and H 0 → ℓ i ℓ j in models with TeV sterile neutrinos
dc.contributor.author | Hernández Tomé, G. | |
dc.contributor.author | Illana Calero, José Ignacio | |
dc.contributor.author | Masip Mellado, Manuel | |
dc.date.accessioned | 2021-03-15T11:30:52Z | |
dc.date.available | 2021-03-15T11:30:52Z | |
dc.date.issued | 2020 | |
dc.identifier.citation | Hernández-Tomé, G., Illana, J. I., & Masip, M. (2020). ρ parameter and H 0→ ℓ i ℓ j in models with TeV sterile neutrinos. Physical Review D, 102(11), 113006. [DOI: 10.1103/PhysRevD.102.113006] | es_ES |
dc.identifier.uri | http://hdl.handle.net/10481/67226 | |
dc.description.abstract | The presence of massive sterile neutrinos N mixed with the active ones induces flavor violating processes in the charged lepton sector at the loop level. In particular, the amplitude of H 0 → ¯ ℓ i ℓ j is expected to be proportional to the product of heavy-light Yukawa couplings y i y j = 2 s ν i s ν j m 2 N / v 2 , where s ν i , j express the heavy-light neutrino mixings. Here, we revisit these Higgs decays in the most generic extension of the neutrino sector, focusing on large values of y i . We show that decoupling effects and a cancellation between the two dominant contributions to these processes makes the amplitude about 100 times smaller than anticipated. We find that perturbative values of y i giving an acceptable contribution to the ρ parameter imply B ( H 0 → ¯ ℓ i ℓ j ) < 10 − 8 for any lepton flavors, a rate that is not accessible at current colliders. | es_ES |
dc.description.sponsorship | Spanish Ministry of Science, Innovation and Universities FPA2016-78220-C3 PID2019-107844GB-C21/AEI/10.13039/501100011033 | es_ES |
dc.description.sponsorship | Junta de Andalucia FQM 101 SOMM17/6104/UGR P18-FR-1962 P18-FR-5057 | es_ES |
dc.description.sponsorship | Consejo Nacional de Ciencia y Tecnologia (CONACyT) | es_ES |
dc.language.iso | eng | es_ES |
dc.publisher | AMER PHYSICAL SOC | es_ES |
dc.rights | Atribución 3.0 España | * |
dc.rights.uri | http://creativecommons.org/licenses/by/3.0/es/ | * |
dc.title | ρ parameter and H 0 → ℓ i ℓ j in models with TeV sterile neutrinos | es_ES |
dc.type | info:eu-repo/semantics/article | es_ES |
dc.rights.accessRights | info:eu-repo/semantics/openAccess | es_ES |
dc.identifier.doi | 10.1103/PhysRevD.102.113006 |