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View article: Exploring new physics contributions to CP violation in $$\tau ^- \rightarrow K^-\pi ^0\nu _{\tau } $$
Exploring new physics contributions to CP violation in $$\tau ^- \rightarrow K^-\pi ^0\nu _{\tau } $$ Open
A general analysis of possible violation of CP in processes like $$\tau \rightarrow K\pi \nu $$ , for unpolarized $$\tau $$ is presented. In this paper, we derive the new contributions to the effective Hamiltonian governs $$\vert \Delta …
View article: Morphology and numerical characteristics of epidemic curves for SARS-Cov-II using Moyal distribution
Morphology and numerical characteristics of epidemic curves for SARS-Cov-II using Moyal distribution Open
In this paper, it is shown that the Moyal distribution is an excelent tool to study the SARS-Cov-II (Covid-19) epidemiological associated curves and its propagation. The Moyal parameters give all the information to describe the form and th…
View article: Effects of anH−μ−τCoupling in Quarkonium Lepton FlavorViolation Decays
Effects of anH−μ−τCoupling in Quarkonium Lepton FlavorViolation Decays Open
In this work we study the consistency of a possible non-vanishing coupling Hμτ smaller than 0.25% as pointed by the CMS collaborations [1], with measured lepton flavor violation processes involving quarkonium. We show that the most promisi…
View article: New physics signature in $$D^0 (\bar{D}^0)\rightarrow f$$ effective width asymmetries
New physics signature in $$D^0 (\bar{D}^0)\rightarrow f$$ effective width asymmetries Open
\n Violation of charge conjugation-parity ($$\\mathrm CP$$) symmetry plays a major rule in the dominance of matter in our universe. A kind of $$\\mathrm CP$$ violation results from the asymmetry of the life time measured in $$M^0$$ and $${…
View article: Constraining ultra light fermionic dark matter with Milky-Way observations
Constraining ultra light fermionic dark matter with Milky-Way observations Open
The equation of state for a degenerate gas of fermions at zero temperature in the non-relativistic case is a polytrope, i.e. $p \simρ^{5/3}/m_F^{8/3}$. If dark matter is modeled by such a non-interacting fermion, this dependence in the mas…
View article: Constraining ultra light fermionic dark matter with galactic observations
Constraining ultra light fermionic dark matter with galactic observations Open
The equation of state for a free gas of fermions at zero temperature in the non relativistic case is a polytrope, i.e. $p=\gamma \rho^{5/3}/m_F^{8/3}$. If dark matter is modelled by such non interacting fermion, this dependence in the mass…
View article: Exploring new physics contributions to $CP$ violation in $\tau^- \to K^-\pi^0\nu_{\tau} $
Exploring new physics contributions to $CP$ violation in $\tau^- \to K^-\pi^0\nu_{\tau} $ Open
A general analysis of possible violation of CP in processes like $\tau \to K\pi \nu$, for unpolarized $\tau$ is presented. In this paper, we derive the new contributions to the effective Hamiltonian governs $\vert\Delta S \vert=1$ semilept…
View article: Exploring new physics contributions to $CP$ violation in $τ^- \to K^-π^0ν_τ $
Exploring new physics contributions to $CP$ violation in $τ^- \to K^-π^0ν_τ $ Open
A general analysis of possible violation of CP in processes like $τ\to Kπν$, for unpolarized $τ$ is presented. In this paper, we derive the new contributions to the effective Hamiltonian governs $\vertΔS \vert=1$ semileptonic tau decays in…
View article: Charged Higgs contributions to CP violation in $\tau^- \to K^-\pi^0\nu_{\tau}$
Charged Higgs contributions to CP violation in $\tau^- \to K^-\pi^0\nu_{\tau}$ Open
In this paper we derive the new contributions to the effective Hamiltonian governs $\vert\Delta S \vert=1$ semileptonic tau decays in the framework of two Higgs doublet model with generic Yukawa structure. We list all operators, in the eff…
View article: Diffuse neutrino supernova background as a cosmological test
Diffuse neutrino supernova background as a cosmological test Open
The future detection and measurement of the diffuse neutrino supernova background will shed light on the rate of supernovae events in the Universe, the star formation rate and the neutrino spectrum from each supernova. Little has been said…
View article: Majorana versus Dirac neutrino in <i>v</i> — <i>e</i> scattering process and its possible applications
Majorana versus Dirac neutrino in <i>v</i> — <i>e</i> scattering process and its possible applications Open
In previous works it was established that if neutrino helicity differs from minus one, then the Dirac and Majorana cross sections in neutrino-electron scattering are different, despite of the smallness of the neutrino mass. Considering thi…
View article: Distinguishing Dirac and Majorana neutrinos with astrophysical fluxes
Distinguishing Dirac and Majorana neutrinos with astrophysical fluxes Open
Massive neutrinos can have helicity $s_{\parallel}\neq -1$. Neutrino helicity changes when the neutrino interacts with an external magnetic field and it is possible that the left-handed neutrinos born inside the Sun or a supernova could le…
View article: <i>CP</i>-violation phases and Majorana neutrino magnetic moments in left-right models
<i>CP</i>-violation phases and Majorana neutrino magnetic moments in left-right models Open
An implication of nonzero neutrino masses is the existence of neutrino magnetic moments, which arise in extensions of the Standard Model. Among the whole set of electromagnetic properties, these physical quantities have received much atten…
View article: Neutrino-electron scattering with a new source of CP violation
Neutrino-electron scattering with a new source of CP violation Open
According to previous works, there is a possibility for increasing the difference between Dirac and Majorana cross section for a neutrino-electron scattering process if we take into account that the neutrino longitudinal polarization can b…
View article: Neutronic studies for the actinides incineration in a Gas-cooled Fast Reactor (GFR)
Neutronic studies for the actinides incineration in a Gas-cooled Fast Reactor (GFR) Open
Results of a simulation of a specific configuration of the Gas-cooled Fast Reactor (GFR) core for the actinides incineration of long lifetimes, thus reducing the radiotoxicity of nuclear waste are presented in this paper. From the neutroni…