The Type II Dirac Seesaw Portal to the mirror sector: Connecting neutrino masses and a solution to the strong CP problem

Berbig, Maximilian

doi:10.48550/arxiv.2209.14246

Cited by 3 publications

(3 citation statements)

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“…1 Models with a twin sector, or sometimes called the mirror sector, have been described as the parity solution to the strong CP problem in the literature [22][23][24][25][26][27][28][29][30][31][32][33]. The present model, however, can not solve this problem because of the difference in the couplings, and hence there is no parity.…”

Section: Neutrino Masses and Interactionsmentioning

confidence: 94%

A Right-handed neutrino portal to the hidden sector: active neutrinos and their twins in an F-theory model

Kawamura

Raby

2023

J. High Energ. Phys.

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We analyze the neutrino phenomenology in an SU(5) F-theory model with both a visible sector and a twin hidden sector. At low energies, the strong and weak scales of the two sectors may differ but the spectrum of states is described by the MSSM (MSSM′) in the visible (twin) sectors. What is special about the model is that there are right-handed neutrinos which couple to both sectors via Yukawa couplings. As a result, assuming 3 right-handed neutrinos with a large mass much greater than the weak scale, at tree-level the seesaw mechanism results in 3 massive Majorana neutrinos and 3 massless ones. The massless neutrinos acquire mass via radiative corrections. In our analysis, the massless neutrinos are predominantly active neutrinos, while the massive neutrinos are predominantly sterile neutrinos. We fit the active neutrino masses and mixing angles and discuss the phenomenology of the lightest sterile neutrino. Finally we consider some possible scenarios for cosmology.

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Section: Neutrino Masses and Interactionsmentioning

confidence: 94%

A Right-handed neutrino portal to the hidden sector: active neutrinos and their twins in an F-theory model

Kawamura

Raby

2023

J. High Energ. Phys.

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“…The SU (5) , broken to G SM corresponds to the twin sector whose matter content is the same as that in the MSSM sector, but with a different value for the GUT scale and the GUT coupling constant [7]. Models with a twin sector, or sometimes called the mirror sector, have been described as the parity solution to the strong CP problem in the literature [8][9][10][11][12][13][14][15][16][17][18][19]. The possibility of light sterile neutrinos from the mirror sector is discussed in Ref.…”

Section: Introductionmentioning

confidence: 99%

Neutrinos in Global SU(5) F-theory Model

Raby¹,

Kawamura²

2023

Preprint

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In this talk, given at Corfu 2022 Workshop on the Standard Model and Beyond, I present work in collaboration with Junichiro Kawamura,Ref. [1]. The talk is also based on a number of papers on a Global SU (5) F-theory GUT in collaboration with Herb Clemens. In the model SU (5) is broken to the MSSM via a Wilson line. This is accomplished (without problems with vector-like exotics) by simultaneously describing the F-theory model and its Heterotic dual. The model has a twin MSSM sector and it's the neutrino sector of the field I consider in the talk.

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“…The SU (5) ′ , broken to G SM ′ corresponds to the twin sector whose matter content is the same as that in the MSSM sector, but with a different value for the GUT scale and the GUT coupling constant [7]. Models with a twin sector, or sometimes called the mirror sector, have been described as the parity solution to the strong CP problem in the literature [8][9][10][11][12][13][14][15][16][17][18][19]. The possibility of light sterile neutrinos from the mirror sector is discussed in Ref.…”

Section: Introductionmentioning

confidence: 99%