ﻻ يوجد ملخص باللغة العربية
We introduce a simple scenario involving fermionic dark matter ($chi$) and singlet scalar mediators that may account for the Galactic Center GeV $gamma$-ray excess while satisfying present direct detection constraints. CP-violation in the scalar potential leads to mixing between the Standard Model Higgs boson and the scalar singlet, resulting in three scalars $h_{1,2,3}$ of indefinite CP-transformation properties. This mixing enables s-wave $chi{barchi}$ annihilation into di-scalar states, followed by decays into four fermion final states. The observed $gamma$-ray spectrum can be fitted while respecting present direct detection bounds and Higgs boson properties for $m_{chi} = 60 sim 80 $ GeV, and $m_{h_3} sim m_{chi}$. Searches for the Higgs exotic decay channel $h_1 to h_3 h_3$ at the 14 TeV LHC should be able to further probe the parameter region favored by the $gamma$-ray excess.
We introduce a scenario for CP-violating (CPV) dark photon interactions in the context of non-abelian kinetic mixing. Assuming an effective field theory that extends the Standard Model (SM) field content with an additional $U(1)$ gauge boson ($X$) an
We study an extension of the Standard Model (SM) in which two copies of the SM scalar $SU(2)$ doublet which do not acquire a Vacuum Expectation Value (VEV), and hence are textit{inert}, are added to the scalar sector. We allow for CP-violation in the
We study the effect of explicit CP violation in the Higgs sectors of the MSSM in the di-photon decay of the lightest CP-mixed Higgs state. Further it is shown that the gluon fusion production mechanism along with the di-photon decay enhances CP-viola
CP-violating effects in the Higgs sector of the Minimal Supersymmetric Standard Model with complex parameters (cMSSM) are induced by potentially large higher-order corrections. As a consequence, all three neutral Higgs bosons can mix with each other.
We discuss the effect of CP violation in the aligned scenario of the general two-Higgs-doublet model, in which the Higgs potential and the Yukawa interaction provide additional CP-violating phases. An alignment is imposed to the Yukawa interaction in