Kaon BSM B-parameters using improved staggered fermions from $N_f=2+1$ unquenched QCD

Benjamin J. Choi, Yong-Chull Jang, Chulwoo Jung +10

We present results for the matrix elements of the additional $\Delta S=2$ operators that appear in models of physics beyond the Standard Model (BSM), expressed in terms of four BSM $B$-p…