タイトル
Tension of CP Violation in the Kaon Decay and Supersymmetric Interpretation
アブストラクト
Recent calculations based on the lattice simulation have pointed to a 2.8
sigma tension between data on ϵ′K, which is a measure of direct CP
violation in the K→ππ, and its SM prediction. It has been shown that this
tension can be resolved within the Minimal Supersymmetric Standard Model
(MSSM) through gluino-squark box diagrams, even if squarks and gluinos are
much heavier than 1 TeV. The rare decays KL→π0 νν and K+→π+ νν are
similarly sensitive to very high mass scales. We analyze the correlations
between ϵ′K, ϵK, B(KL→π0 νν) and B(K+→π+ νν) within the MSSM aiming at an
explanation of ϵ′K tension via gluino-squark box diagrams. This is
interesting in the light of future precision measurements by KOTO and NA62
at J-PARC and CERN, respectively. We will also discuss a different scenario
(modified Z-coupling scenario), which can also explain the ϵ′K tension with
different correlations with B(KL→π0 νν) and B(K+→π+ νν). This talk is based
on arXiv:1604.07400, arXiv:1607.06727, arXiv:1612.08839 and arXiv:1703.05786.