Constraining Right-Handed Scale Through Kaon Mixing in SUSY Left-Right Model

TL;DR

This paper investigates how supersymmetric left-right models can explain kaon mixing phenomena, showing potential for the right-handed W-boson to be as light as 2 TeV due to cancellation effects, making it accessible at the LHC.

Contribution

It provides a detailed calculation of beyond-standard-model contributions to kaon mixing in SUSY left-right models, revealing a possible cancellation mechanism that constrains the right-handed scale.

Findings

Right-handed W-boson mass scale can be as low as 2 TeV.

Cancellation between gauge and supersymmetric contributions is possible.

Implications for LHC searches for new physics.

Abstract

We study flavor-changing neutral current and CP violations in the minimal supersymmetric left-right model. We calculate the beyond-standard-model contributions to the neutral kaon mixing $\Delta M_K$ and $\epsilon$, and find possible to have a numerical cancelation between the contributions from the right-handed gauge boson and supersymmetric box diagram. With the cancelation, the right-handed $W$-boson mass scale can be lowered to about 2 TeV, well within the search limit of LHC.