Gravitational wave complementarity and impact of NANOGrav data on gravitational leptogenesis

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F21%3A00554717" target="_blank" >RIV/68378271:_____/21:00554717 - isvavai.cz</a>
Result on the web
<a href="http://hdl.handle.net/11104/0329378" target="_blank" >http://hdl.handle.net/11104/0329378</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1007/JHEP05(2021)211" target="_blank" >10.1007/JHEP05(2021)211</a>

Result language
angličtina
Original language name
Gravitational wave complementarity and impact of NANOGrav data on gravitational leptogenesis
Original language description
In seesaw mechanism, if right handed (RH) neutrino masses are generated dynamically by a gauged U(1) symmetry breaking, a stochastic gravitational wave background (SGWB) sourced by a cosmic string network could be a potential probe of leptogenesis. We show that the leptogenesis mechanism that facilitates the dominant production of lepton asymmetry via the quantum effects of right-handed neutrinos in gravitational background, can be probed by GW detectors as well as next-generation neutrinoless double beta decay (0νββ) experiments in a complementary way. We infer that for a successful leptogenesis, an exclusion limit on f − ΩGW_{GW}GWh2^{2}2 plane would correspond to an exclusion on the |mββ_{ββ}ββ| − m1_{1}1 plane as well. We consider a normal light neutrino mass ordering and discuss how recent NANOGrav pulsar timing data (if interpreted as GW signal) e.g., at 95% CL, would correlate with the potential discovery or null signal in 0νββ decay experiments.
Czech name
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Czech description
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Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
—
OECD FORD branch
10303 - Particles and field physics

Project
<a href="/en/project/EF20_079%2F0017754" target="_blank" >EF20_079/0017754: International mobility MSCA-IF IV FZU</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2021
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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