scholarly journals Meson-Mass Generation by Instantons

1979 ◽  
Vol 61 (2) ◽  
pp. 608-617 ◽  
Author(s):  
T. Saito ◽  
K. Shigemoto
Keyword(s):  
Meson Mass ◽  
Mass Generation

scholarly journals Fermion and meson mass generation in non-Hermitian Nambu–Jona-Lasinio models

2021 ◽  
Vol 103 (5) ◽  
Author(s):  
Alexander Felski ◽  
S. P. Klevansky
Keyword(s):  
Meson Mass ◽  
Mass Generation

scholarly journals Meson-Mass Generation by Instantons. II

1979 ◽  
Vol 61 (5) ◽  
pp. 1459-1465 ◽  
Author(s):  
T. Saito ◽  
K. Shigemoto
Keyword(s):  
Meson Mass ◽  
Mass Generation

Vector-Meson Mass Generation by Chiral Anomalies

1985 ◽  
Vol 54 (12) ◽  
pp. 1219-1221 ◽  
Author(s):  
R. Jackiw ◽  
R. Rajaraman
Keyword(s):  
Vector Meson ◽  
Meson Mass ◽  
Mass Generation

Vector-Meson Mass Generation by Chiral Anomalies

1985 ◽  
Vol 54 (18) ◽  
pp. 2060-2060 ◽  
Author(s):  
R. Jackiw ◽  
R. Rajaraman
Keyword(s):  
Vector Meson ◽  
Meson Mass ◽  
Mass Generation

scholarly journals Real and imaginary mass generation in the presence of external fields and axions

2003 ◽  
Vol 2003 (09) ◽  
pp. 044-044
Author(s):  
Eduardo I Guendelman ◽  
Stefano Ansoldi ◽  
Euro Spallucci
Keyword(s):  
External Fields ◽  
Mass Generation

scholarly journals Relaxing cosmological neutrino mass bounds with unstable neutrinos

2020 ◽  
Vol 2020 (12) ◽  
Author(s):  
Miguel Escudero ◽  
Jacobo Lopez-Pavon ◽  
Nuria Rius ◽  
Stefan Sandner
Keyword(s):  
Neutrino Mass ◽  
Particle Physics ◽  
Goldstone Boson ◽  
Mass Scale ◽  
Simple Extension ◽  
Type I ◽  
Mass Generation ◽  
Age Of The Universe ◽  
Neutrino Mass Models ◽  
The Right

Abstract At present, cosmological observations set the most stringent bound on the neutrino mass scale. Within the standard cosmological model (ΛCDM), the Planck collaboration reports ∑mv< 0.12 eV at 95 % CL. This bound, taken at face value, excludes many neutrino mass models. However, unstable neutrinos, with lifetimes shorter than the age of the universe τν ≲ tU, represent a particle physics avenue to relax this constraint. Motivated by this fact, we present a taxonomy of neutrino decay modes, categorizing them in terms of particle content and final decay products. Taking into account the relevant phenomenological bounds, our analysis shows that 2-body decaying neutrinos into BSM particles are a promising option to relax cosmological neutrino mass bounds. We then build a simple extension of the type I seesaw scenario by adding one sterile state ν4 and a Goldstone boson ϕ, in which νi→ ν4ϕ decays can loosen the neutrino mass bounds up to ∑mv ∼ 1 eV, without spoiling the light neutrino mass generation mechanism. Remarkably, this is possible for a large range of the right-handed neutrino masses, from the electroweak up to the GUT scale. We successfully implement this idea in the context of minimal neutrino mass models based on a U(1)μ−τ flavor symmetry, which are otherwise in tension with the current bound on ∑mv.

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