Explaining the $B_{d(s)} \rightarrow K^{(\ast)}\bar{K}^{(\ast)}$ puzzle via chiral-flip in $R$-parity violating MSSM with seesaw mechanism

TL;DR

This paper investigates how R-parity violating MSSM with inverse seesaw can explain the B meson decay puzzle through sneutrino chiral flips, also affecting B_s mixing and related observables, including neutrino and Z decay data.

Contribution

It introduces a novel explanation for the B decay puzzle using sneutrino chiral flips in RPV-MSSM with inverse seesaw, connecting it to B_s mixing and other experimental constraints.

Findings

Sneutrino chiral flip can explain the B decay puzzle.

Model accommodates B_s mixing constraints.

Potential NP enhancement in B+ → K+ νν̄ decay.

Abstract

We study the non-leptonic puzzle of $B_{d(s)} \rightarrow K^{(\ast)}\bar{K}^{(\ast)}$ decay in the $R$-parity violating minimal supersymmetric standard model (RPV-MSSM) extended with the inverse seesaw mechanism. In this model, the chiral flip of sneutrinos can contribute to the observables $L_{K\bar{K}}$ and $L_{K^{\ast}\bar{K}^{\ast}}$, that is benefit for explaining the relevant puzzle. We also find that this unique effect can engage in the $B_s$-$\bar{B}_s$ mixing. We utilize the scenario of complex $\lambda^\prime$ couplings to fulfill the recent stringent constraint of $B_s$-$\bar{B}_s$ mixing, and examine other related bounds of $B,K$-meson decays, lepton decays, neutrino data, $Z$ decays, oblique parameters, CP violations (CPV), etc. Besides, inspired by the new measurement of ${\cal B}(B^+ \rightarrow K^+\nu\bar{\nu})$ by Belle II, which shows about $2.7\sigma$ higher than the Standard Model (SM) prediction, we also investigate the New Physics (NP) enhancement to this observable.