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Title: Assessing perturbativity and vacuum stability in high-scale leptogenesis

Abstract

We consider the requirements that all coupling constants remain perturbative and the electroweak vacuum metastable up to the Planck scale in high-scale thermal leptogenesis, in the context of a type-I seesaw mechanism. We find a large region of the model parameter space that satisfies these conditions in combination with producing the baryon asymmetry of the Universe. We demonstrate these conditions require $${\rm Tr}[Y_N^\dagger Y_N] \lesssim 0.66$$ on the neutrino Yukawa matrix. We also investigate this scenario in the presence of a large number $$N_F$$ of coloured Majorana octet fermions in order to make quantum chromodynamics asymptotically safe in the ultraviolet.

Authors:
 [1];  [2];  [3]
  1. Univ. of California, Irvine, CA (United States)
  2. Durham University (United Kingdom)
  3. Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
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:
1462109
Report Number(s):
arXiv:1806.00460; IPPP/18/40; FERMILAB-PUB-18-222-T; UCI-TR-2018-05; IPPP-18-40
Journal ID: ISSN 1029-8479; 1676110; TRN: US1902106
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: 2018; Journal Issue: 12; Journal ID: ISSN 1029-8479
Publisher:
Springer Berlin
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; Beyond Standard Model; Cosmology of Theories beyond the SM; Neutrino Physics

Citation Formats

Ipek, Seyda, Plascencia, Alexis D., and Turner, Jessica. Assessing perturbativity and vacuum stability in high-scale leptogenesis. United States: N. p., 2018. Web. doi:10.1007/JHEP12(2018)111.
Ipek, Seyda, Plascencia, Alexis D., & Turner, Jessica. Assessing perturbativity and vacuum stability in high-scale leptogenesis. United States. doi:10.1007/JHEP12(2018)111.
Ipek, Seyda, Plascencia, Alexis D., and Turner, Jessica. Tue . "Assessing perturbativity and vacuum stability in high-scale leptogenesis". United States. doi:10.1007/JHEP12(2018)111. https://www.osti.gov/servlets/purl/1462109.
@article{osti_1462109,
title = {Assessing perturbativity and vacuum stability in high-scale leptogenesis},
author = {Ipek, Seyda and Plascencia, Alexis D. and Turner, Jessica},
abstractNote = {We consider the requirements that all coupling constants remain perturbative and the electroweak vacuum metastable up to the Planck scale in high-scale thermal leptogenesis, in the context of a type-I seesaw mechanism. We find a large region of the model parameter space that satisfies these conditions in combination with producing the baryon asymmetry of the Universe. We demonstrate these conditions require ${\rm Tr}[Y_N^\dagger Y_N] \lesssim 0.66$ on the neutrino Yukawa matrix. We also investigate this scenario in the presence of a large number $N_F$ of coloured Majorana octet fermions in order to make quantum chromodynamics asymptotically safe in the ultraviolet.},
doi = {10.1007/JHEP12(2018)111},
journal = {Journal of High Energy Physics (Online)},
number = 12,
volume = 2018,
place = {United States},
year = {2018},
month = {12}
}

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

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Cited by: 3 works
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Figures / Tables:

Table 1. Table 1.: Ranges of the four free parameters in our numerical scan.

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