Zobrazeno 1 - 10
of 152
pro vyhledávání: '"Pires, C. A. de S."'
The magnetic moment of the muon can receive significant two-loop contributions from the scalar spectrum in Two Higgs Doublet Models (THDM), particularly for a light pseudoscalar. It is established that the symmetry breaking from $SU(3)_L \times U(1)_
Externí odkaz:
http://arxiv.org/abs/2405.05839
Autor:
Doff, A., Pires, C. A. de S.
In this work we introduce scalar leptoquarks into the 3-3-1 model with right-handed neutrinos with the aim of solving the $(g-2)_{\mu}$ puzzle. We show that besides the model supports leptoquarks in the octet, sextet, triplet and singlet representati
Externí odkaz:
http://arxiv.org/abs/2403.19338
Seesaw mechanisms are the simplest and the most elegant way of generating small masses for the active neutrinos $(m_\nu)$. In these mechanisms $m_\nu$ is inversely proportional to the lepton number breaking scale $(M)$ that, in the particular case of
Externí odkaz:
http://arxiv.org/abs/2304.14443
Autor:
Doff, A., Pires, C. A. de S.
In its original version, the minimal 3-3-1 model possess a Landau-pole around 2-6 TeV scale. Current LHC bound on $Z^{\prime}$ implies that the $SU(3)_L\times U(1)_X$ symmetry must break spontaneously around 4 TeV which means that the model may lose
Externí odkaz:
http://arxiv.org/abs/2302.08578
In the 3-3-1 model with right-handed neutrinos, three triplets of scalars engender the correct sequence of symmetry breaking, $SU(3)_C \times SU(3)_L \times U(1)_X \rightarrow SU(3)_C \times SU(2)_L \times U(1)_Y \rightarrow SU(3)_C \times U(1)_{EM}$
Externí odkaz:
http://arxiv.org/abs/2212.10546
Autor:
Oliveira, Vinícius, Pires, C. A. de S.
Meson and anti-meson mixing processes constitute an important source of constraints on models that give tree level contributions to flavor violating neutral processes. In electroweak $ \text{SU}(3)_\text{L} \times \text{U}(1)_N $ models, where anomal
Externí odkaz:
http://arxiv.org/abs/2211.03835
The minimal scalar sector of the 3-3-1 model is composed by the SU(3)$_L$ triplet scalars $\eta$, $\rho$, $\chi$ and its potential allows the trilinear term $\frac{f}{\sqrt{2}}\chi \eta \rho$. Since $f$ is an energy scale associated to the explicit v
Externí odkaz:
http://arxiv.org/abs/2210.05426
Autor:
Oliveira, Vinícius, Pires, C. A. de S.
Publikováno v:
Journal of Physics G: Nuclear and Particle Physics (2023)
In 3-3-1 models anomaly cancellation requires that one of the three families of quarks transforms as triplet by $\text{SU}(3)_\text{L}$ with the other two transforming necessarily as anti-triplet. This is an important feature of the model because wit
Externí odkaz:
http://arxiv.org/abs/2208.00420
Autor:
Oliveira, Vinícius, Pires, C. A. de S.
The framework of the so-called 3-3-1LHN model may accommodate two different, but viable, scenarios of dark matter: one involving a heavy Dirac neutrino , $N_1$, or another having a scalar, $\phi$, as dark matter candidate. In both cases the dark matt
Externí odkaz:
http://arxiv.org/abs/2112.03963
Publikováno v:
Physics Letters B (2021) 136764
Since the heavy neutrinos of the inverse seesaw mechanism mix largely with the standard ones, the charged currents formed with them and the muons have the potential of generating robust and positive contribution to the anomalous magnetic moment of th
Externí odkaz:
http://arxiv.org/abs/2107.01315