Results 111 to 120 of about 59,601 (214)
Large solar neutrino mixing and radiative neutrino mechanism
Physics Letters B, 2002 We find that the presence of a global $L_e-L_ -L_ $ ($\equiv L^\prime$) symmetry and an $S_2$ permutation symmetry for the $ $- and $ $-families supplemented by a discrete $Z_4$ symmetry naturally leads to almost maximal atmospheric neutrino mixing and large solar neutrino mixing, which arise, respectively, from type II seesaw mechanism initiated ...
Kitabayashi, Teruyuki, Yasuè, Masaki
openaire +2 more sources
Exploring Dark Photon Production and Kinetic Mixing Constraints in Heavy‐Ion Collisions
Astronomische Nachrichten, Volume 346, Issue 3-4, March-May 2025.ABSTRACT Vector U‐bosons, often referred to as “dark photons,” are potential candidates for mediating dark matter interactions. In this study, we outline a procedure to derive theoretical constraints on the upper bound of the kinetic mixing parameter ϵ2MU$$ {\upvarepsilon}^2\left({M}_U\right) $$ using dilepton data from heavy‐ion from SIS to RHIC ...
Adrian William Romero Jorge +3 more
wiley +1 more source
The μ − τ reflection symmetry breaking in a B − L model with T7 × Z8 × Z2 symmetry
Physics Letters BWe suggest a neutrino mass matrix texture satisfying the μ−τ reflection symmetry in a B−L model with T7 symmetry by introducing additional singlet scalars and invoking the Type-I seesaw mechanism in which the hierarchical patterns of charged lepton and ...
V.V. Vien
doaj +1 more source
Visible GeV ALP from TeV Vector‐Like Leptons
Fortschritte der Physik, Volume 73, Issue 3, March 2025.Abstract A model is presented where a GeV axion‐like‐particle (ALP) is predicted in a large portion of the parameter space due to the presence of explicit Peccei–Quinn (PQ) symmetry‐breaking terms in an exotic leptonic sector. The latter provides a solution to the muon g−2$g-2$ anomaly, within the framework of the Linear Seesaw neutrino mechanism.
Arturo de Giorgi +2 more
wiley +1 more source
Theory of neutrino fast flavor evolution. Part I. Linear response theory and stability conditions.
Journal of High Energy PhysicsNeutrino-neutrino refraction leads to collective flavor evolution that can include fast flavor conversion, an ingredient still missing in numerical simulations of core-collapse supernovae.
Damiano F. G. Fiorillo, Georg G. Raffelt
doaj +1 more source
Reproducing lepton mixing in a texture zero model
, 2013 We note that the emerging features of lepton mixing can be reproduced if, with inverted neutrino mass ordering, both the smallest neutrino mass and the $\tau\tau$ element of the neutrino mass matrix vanish.
Lavoura, Luís +2 more
core +1 more source
Solar neutrinos and neutrino mixing
Physics Letters B, 1976 Abstract The recent suggestion that mixing of many neutrino types accounts for the solar neutrino puzzle is discussed. We find that in general the suppression due to mixing of k species is by less than a factor k.
openaire +1 more source
Improved precision on 2–3 oscillation parameters using the synergy between DUNE and T2HK
Journal of High Energy PhysicsA high-precision measurement of ∆ m 31 2 $$ \Delta {m}_{31}^2 $$ and θ 23 is inevitable to estimate the Earth’s matter effect in long-baseline experiments which in turn plays an important role in addressing the issue of neutrino mass ordering and to ...
Sanjib Kumar Agarwalla +2 more
doaj +1 more source
Lessons from the first JUNO results
Journal of High Energy PhysicsFirst results from the JUNO reactor neutrino experiment already determine with world-leading precision the small neutrino squared-mass splitting ∆ m 21 2 $$ \Delta {m}_{21}^2 $$ and the mixing angle θ 12.
Ivan Esteban +5 more
doaj +1 more source
Current and future neutrino oscillation constraints on leptonic unitarity
Journal of High Energy Physics, 2020 The unitarity of the lepton mixing matrix is a critical assumption underlying the standard neutrino-mixing paradigm. However, many models seeking to explain the as-yet-unknown origin of neutrino masses predict deviations from unitarity in the mixing of ...
Sebastian A. R. Ellis +2 more
doaj +1 more source