Zobrazeno 1 - 10
of 537
pro vyhledávání: '"TAVARES, A. G."'
Polarized and unpolarized off-shell $H^\ast\to ZZ\rightarrow 4\ell$ decay above the $2m_Z$ threshold
Publikováno v:
Chinese Physics C (2024)
An analysis of the off-shell $H^\ast\rightarrow ZZ \rightarrow \overline{\ell}_1\ell_1\overline{\ell}_2\ell_2$ decay width is presented for both unpolarized and polarized $Z$ gauge bosons in the scenario with the most general $H^*ZZ$ vertex function,
Externí odkaz:
http://arxiv.org/abs/2402.18497
The one-loop contribution of scalar and vector leptoquarks (LQs) to the electromagnetic properties (NEPs) of massive Dirac neutrinos is presented via an effective Lagrangian approach, with emphasis on the effective neutrino charge radius (NCR), which
Externí odkaz:
http://arxiv.org/abs/2308.07493
The standard model (SM) one-loop contributions to the most general $H^*Z^*Z^*$ coupling are obtained via the background field method in terms of Passarino-Veltman scalar functions, from which the contributions to the $H^*ZZ$ and $HZZ^*$ couplings are
Externí odkaz:
http://arxiv.org/abs/2301.13127
Autor:
Nunes, Débora1,2 (AUTHOR), Tavares, Tânia G.1,2 (AUTHOR), Malcata, Frenacisco Xavier1,2 (AUTHOR), Loureiro, Joana A.1,2 (AUTHOR) jasl@fe.up.pt, Pereira, Maria Carmo1,2 (AUTHOR) jasl@fe.up.pt
Publikováno v:
Pharmaceuticals (14248247). Sep2024, Vol. 17 Issue 9, p1162. 14p.
A calculation of the one-loop contribution to the rare three-body flavor changing neutral current top quark decay $t\to c\gamma\gamma$ is presented in the framework of models with one or more scalar leptoquark $SU(2)$ doublets with hypercharge $7/6$.
Externí odkaz:
http://arxiv.org/abs/2208.05064
The non-diagonal contributions to the trilinear gauge bosons couplings $Z\gamma V^\ast$ ($V=Z$, $\gamma$) at the one-loop level are calculated using complex flavor-changing neutral currents mediated by the $Z$ boson. We find that it is not possible t
Externí odkaz:
http://arxiv.org/abs/2203.16819
Bounds on the absorptive (imaginary) parts of the top quark chromomagnetic $\hat{\mu}_t$ and chromoelectric $\hat{d}_t$ dipole moments are obtained by reinterpreting the most recent LHC data in top quark pair production. It is found that both limits
Externí odkaz:
http://arxiv.org/abs/2109.09978
The one-loop contributions to the trilinear neutral gauge boson couplings $ZZV^\ast$ ($V=\gamma,Z,Z'$), parametrized in terms of one $CP$-conserving $f_5^{V}$ and one $CP$-violating $f_4^{V}$ form factors, are calculated in models with $CP$-violating
Externí odkaz:
http://arxiv.org/abs/2102.02197
The one-loop contributions to the chromomagnetic dipole moment $\hat\mu_t(q^2)$ and electric dipole moment $\hat d_t(q^2)$ of the top quark are calculated within the reduced 331 model (RM331) in the general case of an off-shell gluon. It is argued th
Externí odkaz:
http://arxiv.org/abs/2012.09883
Publikováno v:
Eur. Phys. J. Plus 136, 262 (2021)
A new estimate of the one loop contributions of the standard model to the chromomagnetic dipole moment (CMDM) $\hat \mu_q(q^2)$ of quarks is presented with the aim to address a few disagreements arising in previous calculations. We consider the most
Externí odkaz:
http://arxiv.org/abs/2009.11955