Zobrazeno 1 - 10
of 70
pro vyhledávání: '"Asmaa Abada"'
Autor:
Asmaa Abada, Takashi Toma
Publikováno v:
Journal of High Energy Physics, Vol 2024, Iss 8, Pp 1-21 (2024)
Abstract In this work, we address the impact of a small lepton number violation on charged lepton electric dipole moments — EDMs. Low-scale seesaw models protected by lepton number symmetry and leading to pseudo-Dirac pairs in the neutrino heavy sp
Externí odkaz:
https://doaj.org/article/8a7336fe3634454ab1de1bd990d66d47
Publikováno v:
Journal of High Energy Physics, Vol 2024, Iss 5, Pp 1-30 (2024)
Abstract We propose a class of models providing an explanation of the origin of light neutrino masses, the baryon asymmetry of the Universe via leptogenesis and offering viable dark matter candidates. In these models the Majorana masses of the active
Externí odkaz:
https://doaj.org/article/f6050bca093c4d3bad6e9f13b33d5747
Autor:
Asmaa Abada, Nicolás Bernal, Antonio E. Cárcamo Hernández, Sergey Kovalenko, Téssio B. de Melo, Takashi Toma
Publikováno v:
Journal of High Energy Physics, Vol 2023, Iss 3, Pp 1-29 (2023)
Abstract We propose a scotogenic model for generating neutrino masses through a three-loop seesaw. It is a minimally extended inert doublet model with a spontaneously broken global symmetry U(1)′ and a preserved ℤ2 symmetry. The three-loop suppre
Externí odkaz:
https://doaj.org/article/3fb726a2b12d4c4db2f523a2143e6b4a
Publikováno v:
European Physical Journal C: Particles and Fields, Vol 82, Iss 11, Pp 1-17 (2022)
Abstract With very few exceptions, the large amount of available experimental bounds on heavy neutral leptons – HNL – have been derived relying on the assumption of the existence of a single (usually Majorana) sterile fermion state that mixes wit
Externí odkaz:
https://doaj.org/article/a53dc92451c84e55a514a736cbd1798d
Publikováno v:
European Physical Journal C: Particles and Fields, Vol 81, Iss 8, Pp 1-14 (2021)
Abstract We propose an economical model addressing the generation of the Inverse Seesaw mechanism from the spontaneous breaking of a local $$U(1)_{B-L}$$ U ( 1 ) B - L , with the Majorana masses of the sterile neutrinos radiatively generated from the
Externí odkaz:
https://doaj.org/article/8fa639150bb54620b25ba8580dcc4b21
Autor:
Asmaa Abada, Takashi Toma
Publikováno v:
Journal of High Energy Physics, Vol 2021, Iss 4, Pp 1-6 (2021)
The sentences below eq. (3.8) in section 3.2, figure 3-7 and appendix A are corrected. The loop function I D (x i , x j ) is changed to be exactly zero in the minimal scotogenic model. The behaviour of the loop function I M (x i , x j ) that has been
Externí odkaz:
https://doaj.org/article/df281b0971614f45beafc0ae2ed4a0a5
Publikováno v:
Journal of High Energy Physics, Vol 2019, Iss 1, Pp 1-33 (2019)
Abstract Motivated by the capability of the KATRIN experiment to explore the existence of KeV neutrinos in the [1 − 18.5] KeV mass range, we explore the viability of minimal extensions of the Standard Model involving sterile neutrinos (namely the 3
Externí odkaz:
https://doaj.org/article/bf041b7f9c9942cabf9b562e500d05d8
Publikováno v:
Journal of High Energy Physics, Vol 2019, Iss 1, Pp 1-27 (2019)
Abstract The inclusion of heavy neutral leptons to the Standard Model particle content could provide solutions to many open questions in particle physics and cosmology. The modification of the charged and neutral currents from active-sterile mixing o
Externí odkaz:
https://doaj.org/article/85d35af2ddaa459195792ec4ceb76802
Publikováno v:
Journal of High Energy Physics, Vol 2019, Iss 1, Pp 1-54 (2019)
Abstract Leptogenesis induced by the oscillations of GeV-scale neutrinos provides a minimal and testable explanation of the baryon asymmetry of the Universe. In this work we extend previous studies invoking only two heavy neutrinos to the case of thr
Externí odkaz:
https://doaj.org/article/dce8126848ca4e5c8f5bfaae227aa64d
Autor:
Asmaa Abada, Takashi Toma
Publikováno v:
Journal of High Energy Physics, Vol 2018, Iss 4, Pp 1-24 (2018)
Abstract In this work we consider a minimal version of the scotogenic model capable of accounting for an electron electric dipole moment within experimental sensitivity reach in addition to providing a dark matter candidate and radiatively generating
Externí odkaz:
https://doaj.org/article/f27d4567901b4f6183b16913429a8532