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Title: Leptogenesis in the Neutrino Option

Abstract

We examine the compatibility between the Neutrino Option, in which the electroweak scale is generated by PeV mass type I seesaw Majorana neutrinos, and leptogenesis. We find the Neutrino Option is consistent with resonant leptogenesis. Working within the minimal seesaw scenario with two heavy Majorana neutrinos $$N_{1,2}$$, which form a pseudo-Dirac pair, we explore the viable parameter space. We find that the Neutrino Option and successful leptogenesis are compatible in the cases of a neutrino mass spectrum with normal (inverted) ordering for $$1.2 \times 10^6 < M \text{ (GeV)} < 8.8 \times 10^6$$ ($$2.4 \times 10^6 < M \text{ (GeV)} < 7.4 \times 10^6$$), with $$M = (M_1 + M_2)/2$$ and $$M_{1,2}$$ the masses of $$N_{1,2}$$. Successful leptogenesis requires that $$\Delta M/M \equiv (M_2 - M_1)/M \sim 10^{-8}$$. We further show that leptogenesis can produce the baryon asymmetry of the Universe within the Neutrino Option scenario when the requisite CP violation in leptogenesis is provided exclusively by the Dirac or Majorana low energy CP violation phases of the PMNS matrix.

Authors:
ORCiD logo [1]; ORCiD logo [2];  [2];  [3]; ORCiD logo [4]
  1. Heidelberg U.
  2. Durham U., IPPP
  3. Tokyo U., IPMU
  4. Fermilab
Publication Date:
Research Org.:
Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
Sponsoring Org.:
USDOE Office of Science (SC), High Energy Physics (HEP) (SC-25)
OSTI Identifier:
1546024
Report Number(s):
arXiv:1905.12642; FERMILAB-PUB-19-248-T
1737512
DOE Contract Number:  
AC02-07CH11359
Resource Type:
Journal Article
Journal Name:
TBD
Additional Journal Information:
Journal Name: TBD
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS

Citation Formats

Brivio, I., Moffat, K., Pascoli, S., Petcov, S. T., and Turner, J. Leptogenesis in the Neutrino Option. United States: N. p., 2019. Web.
Brivio, I., Moffat, K., Pascoli, S., Petcov, S. T., & Turner, J. Leptogenesis in the Neutrino Option. United States.
Brivio, I., Moffat, K., Pascoli, S., Petcov, S. T., and Turner, J. Wed . "Leptogenesis in the Neutrino Option". United States. https://www.osti.gov/servlets/purl/1546024.
@article{osti_1546024,
title = {Leptogenesis in the Neutrino Option},
author = {Brivio, I. and Moffat, K. and Pascoli, S. and Petcov, S. T. and Turner, J.},
abstractNote = {We examine the compatibility between the Neutrino Option, in which the electroweak scale is generated by PeV mass type I seesaw Majorana neutrinos, and leptogenesis. We find the Neutrino Option is consistent with resonant leptogenesis. Working within the minimal seesaw scenario with two heavy Majorana neutrinos $N_{1,2}$, which form a pseudo-Dirac pair, we explore the viable parameter space. We find that the Neutrino Option and successful leptogenesis are compatible in the cases of a neutrino mass spectrum with normal (inverted) ordering for $1.2 \times 10^6 < M \text{ (GeV)} < 8.8 \times 10^6$ ($2.4 \times 10^6 < M \text{ (GeV)} < 7.4 \times 10^6$), with $M = (M_1 + M_2)/2$ and $M_{1,2}$ the masses of $N_{1,2}$. Successful leptogenesis requires that $\Delta M/M \equiv (M_2 - M_1)/M \sim 10^{-8}$. We further show that leptogenesis can produce the baryon asymmetry of the Universe within the Neutrino Option scenario when the requisite CP violation in leptogenesis is provided exclusively by the Dirac or Majorana low energy CP violation phases of the PMNS matrix.},
doi = {},
journal = {TBD},
number = ,
volume = ,
place = {United States},
year = {2019},
month = {5}
}