6 papers · 1 filter
Baryon Asymmetry Transfer to Majorana Dark Matter from a Colored Partner
Wei Huang, Hongjian Du, Feng Luo +1
We propose a mechanism in which a primordial baryon asymmetry determines the relic abundance of self-conjugate dark matter through a heavier partner sector. In a simplified model w…
Spontaneous CP violation in the D_5-symmetric four-Higgs-doublet models
Dong-Ping Fu, Michihisa Takeuchi
We constructed a four-Higgs-doublet model (4HDM) invariant under D_5 symmetry and investigated its complete neutral vacuum structure in detail. Assuming explicit CP conservation in…
A D_5 Model of Quarks with Explicit CP Violation
Dong-Ping Fu, Michihisa Takeuchi
We investigate the quark sector of a four-Higgs-doublet model with an exact D_5 symmetry. In the framework of explicit CP violation, we considered the most general real vacuum, der…
Probing Scalar-Mediator Quark Couplings via CLFV Lepton-Nucleon Scattering
Yuichiro Kiyo, Michihisa Takeuchi, Yuichi Uesaka +1
We investigate charged lepton flavor violating (CLFV) deep-inelastic scattering, focusing on the gluon-initiated subprocess via the gluon effective operator…
Neutralino dark matter in gauge mediation
Michihisa Takeuchi, Norimi Yokozaki, Junhao Zhu
We explore the potential of neutralino dark matter within the framework of gauge-mediated supersymmetry (SUSY) breaking. Gauge mediation offers an advantage over gravity mediation,…
Probing right-handed neutrinos via tri-lepton signals at the HL-LHC
Manimala Mitra, Subham Saha, Michael Spannowsky +1
Neutrino oscillation experiments have provided direct evidence for the existence of neutrino masses. The seesaw mechanism explains the smallness of these masses through the introdu…