Naturalness, vacuum stability, and leptogenesis in the minimal seesaw model
G. Bambhaniya,P. S. Bhupal Dev,Srubabati Goswami,Subrata Khan,Subrata Khan,Werner Rodejohann +5 more
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TLDR
The right-handed neutrinos within the type-I seesaw mechanism can induce large radiative corrections to the Higgs mass and naturalness arguments can then be used to set limits on their mass scale and Yukawa couplings.Abstract:
The right-handed neutrinos within the type-I seesaw mechanism can induce large radiative corrections to the Higgs mass, and naturalness arguments can then be used to set limits on their mass scale and Yukawa couplings. Driven by minimality, we consider the presence of two degenerate right-handed neutrinos. We compare the limits from naturalness with the ones from the stability of the electroweak vacuum and from lepton flavor violation. Implications from neutrinoless double beta decay are also discussed and renormalization effects for the light neutrino parameters are presented. Adding small perturbations to the degenerate heavy neutrino spectrum allows for successful leptogenesis.read more
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Bounds on heavy Majorana neutrinos in type-I seesaw and implications for collider searches
Arindam Das,Nobuchika Okada +1 more
TL;DR: In this article, the neutrino masses and flavor mixings are incorporated in the type-I seesaw extension of the SM with heavy Majorana neutrinos being singlet under the SM gauge group.
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Resonant enhancement in leptogenesis
TL;DR: In this article, an overview of different methods that have been used to study the saturation of the resonant enhancement when the mass difference becomes comparable to the characteristic width of the Majorana neutrinos is given.
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Cosmological Aspects of Higgs Vacuum Metastability
TL;DR: In this paper, the authors present a comprehensive review of the implications from Higgs vacuum metastability for cosmology along with a pedagogical discussion of the related theoretical topics, including renormalization group improvement, quantum field theory in curved spacetime and vacuum decay in field theory.
Journal ArticleDOI
Resonant enhancement in leptogenesis
TL;DR: In this paper, an overview of different methods that have been used to study the saturation of the resonant enhancement when the mass difference becomes comparable to the characteristic width of the Majorana neutrinos is given.
Journal ArticleDOI
Feebly-interacting particles: FIPs 2020 workshop report
P. Agrawal,Martin Bauer,James Baker Beacham,Asher Berlin,Alexey Boyarsky,S. Cebrián,X. CidVidal,David D'Enterria,A. De Roeck,Marco Drewes,B. Echenard,Maurizio Giannotti,Gian F. Giudice,S. N. Gninenko,S. Gori,Evgueni Goudzovski,Julian Heeck,Pilar Hernández,M. Hostert,M. Hostert,I. G. Irastorza,A. Izmaylov,Joerg Jaeckel,Felix Kahlhoefer,Simon Knapen,Gordan Krnjaic,G. Lanfranchi,Jocelyn Monroe,V. I. Martinez Outschoorn,Jacobo Lopez-Pavon,Silvia Pascoli,Silvia Pascoli,Maxim Pospelov,D. Redigolo,D. Redigolo,Andreas Ringwald,Oleg Ruchayskiy,Joshua T. Ruderman,Joshua T. Ruderman,H. Russell,Jakob Salfeld-Nebgen,Philip Schuster,Mikhail Shaposhnikov,Lesya Shchutska,J. Shelton,Yotam Soreq,Yevgeny V. Stadnik,J. Swallow,Kohsaku Tobioka,Kohsaku Tobioka,Yu-Dai Tsai,Yu-Dai Tsai +51 more
TL;DR: FIPs 2020 as mentioned in this paper was the first workshop dedicated to the physics of feebly-interacting particles and was held virtually from 31 August to 4 September 2020 at CERN, where experts from collider, beam dump, fixed target experiments, as well as from astrophysics, axions/ALPs searches, current/future neutrino experiments, and dark matter direct detection communities participated.