2021/03/03 by Sanjoy Mandal, Jorge C. Romão, Rahul Srivastava +2
Physics and Astronomy · #Boson #Cosmology and Gravitation Theories #Electroweak interaction #Electroweak scale #Higgs boson #Higgs field #Higgs mechanism #Lepton #Lepton number #Neutrino #Neutrino Physics Research #Nuclear physics #Particle physics #Particle physics theoretical and experimental studies #Physics #Physics beyond the Standard Model #Seesaw mechanism #Seesaw molecular geometry #Yukawa potential #hep-ph
paper · pdf · doi:10.1007/jhep07(2021)029
published as JHEP 07 (2021) 029 · 40 pages, 19 figures
arxiv created 2021/03/03 · openalex publication_date 2021/07/01 · arxiv updated 2021/07/13 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
A bstract The Standard Model (SM) vacuum is unstable for the measured values of the top Yukawa coupling and Higgs mass. Here we study the issue of vacuum stability when neutrino masses are generated through spontaneous low-scale lepton number violation. In the simplest dynamical inverse seesaw, the SM Higgs has two siblings: a massive CP -even scalar plus a massless Nambu-Goldstone boson, called majoron. For TeV scale breaking of lepton number, Higgs bosons can have a sizeable decay into the invisible majorons. We examine the interplay and complementarity of vacuum stability and perturbativity restrictions, with collider constraints on visible and invisible Higgs boson decay channels. This simple framework may help guiding further studies, for example, at the proposed FCC facility.