There has been remarkable progress in recent years in the electric dipole moment (EDM) measurements of electron using paramagnetic atom or molecule. In a previous study, we calculated the contribution to the electron EDM induced by the CP-violating Yukawa interaction of electroweak multiplets at the three-loop level in effective field theory. We found that this contribution might reach the...
A long-standing problem concerns the question how to consistently combine perturbative expansions in QCD with power corrections in the context of the operator product expansion (OPE), since the former exhibit ambiguities due to infrared renormalons, which are of the same order as the power corrections. We propose to use the gradient flow time as a factorization scale and to express the OPE in...
We review the signature of toponium formation at the LHC. A color-singlet bound state effect at the threshold region is included in the MonteCarlo simulation. The top pair dileptonic decay final states distributions shows distinctive signature in the small dilepton correlation region. We also discuss the potential effects of P wave contribution.
