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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 × 10 6 < M(GeV) < 8.8 × 10 6(2.4 × 10 6 < M(GeV) < 7.4 × 10 6), with M = ( M 1 + M 2)/2 and M 1, 2 the masses of N 1, 2. Successful leptogenesis requires that ΔM/M ≡ ( M 2- M 1)/ M~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:
 [1];  [2];  [2];  [3];  [4]
  1. Univ. at Heidelberg, Heidelberg (Germany). Inst. für Theoretische Physik
  2. Durham Univ., Durham (United Kingdom). Dept. of Physics, Inst. for Particle Physics Phenomenology
  3. SISSA/INFN, Trieste (Italy); Univ. of Tokyo, Kashiwa (Japan). Kavli IPMU (WPI)
  4. Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States). Theoretical Physics Dept.
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
Journal ID: ISSN 1029-8479; oai:inspirehep.net:1737512
Grant/Contract Number:  
AC02-07CH11359
Resource Type:
Accepted Manuscript
Journal Name:
Journal of High Energy Physics (Online)
Additional Journal Information:
Journal Name: Journal of High Energy Physics (Online); Journal Volume: 2019; Journal Issue: 10; Journal ID: ISSN 1029-8479
Publisher:
Springer Berlin
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; cosmology of theories beyond the SM; neutrino physics; Beyond Standard Model; CP violation

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. doi:10.1007/JHEP10(2019)059.
Brivio, I., Moffat, K., Pascoli, S., Petcov, S. T., & Turner, J. Leptogenesis in the Neutrino Option. United States. doi:10.1007/JHEP10(2019)059.
Brivio, I., Moffat, K., Pascoli, S., Petcov, S. T., and Turner, J. Mon . "Leptogenesis in the Neutrino Option". United States. doi:10.1007/JHEP10(2019)059. 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 N1, 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 × 106 < M(GeV) < 8.8 × 106(2.4 × 106 < M(GeV) < 7.4 × 106), with M = (M1 + M2)/2 and M1, 2 the masses of N1, 2. Successful leptogenesis requires that ΔM/M ≡ (M2-M1)/M~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 = {10.1007/JHEP10(2019)059},
journal = {Journal of High Energy Physics (Online)},
number = 10,
volume = 2019,
place = {United States},
year = {2019},
month = {10}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record

Figures / Tables:

Table 1 Table 1: Best fit value and 1σ ranges of the neutrino oscillation parameters from a global fit to neutrino data. Upper (lower) values are for neutrino mass spectrum with normal (inverted) ordering, for whichmore » $∆m$$^{2}_{3l}$ ≡ $∆m$$^{2}_{31}$ ($∆m$$^{2}_{3l}$ ≡ $∆m$$^{2}_{32}$).« less

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    Figures/Tables have been extracted from DOE-funded journal article accepted manuscripts.