Lifetime difference in $D^0$-${\bar D}^0$ mixing within R-parity-violating SUSY

TL;DR

This paper investigates how R-parity-violating supersymmetry models can significantly affect the lifetime difference in D0-D0bar mixing, emphasizing the impact of basis choice on experimental constraints.

Contribution

It re-evaluates constraints on RPV SUSY parameters from D0-D0bar lifetime difference measurements, highlighting the potential for large negative contributions and the importance of basis selection.

Findings

RPV SUSY can produce large negative effects on lifetime difference

The choice of weak or mass basis significantly influences constraints

Constraints on RPV couplings depend on basis considerations

Abstract

We re-examine constraints from the evidence for observation of the lifetime difference in $D^0$-${\bar D}^0$ mixing on the parameters of supersymmetric models with R-parity violation (RPV). We find that RPV SUSY can give large negative contribution to the lifetime difference. We also discuss the importance of the choice of weak or mass basis when placing the constraints on RPV-violating couplings from flavor mixing experiments.