Search for $CP$ violation in $\Xi_c^+\rightarrow pK^-\pi^+$ decays using model-independent techniques

TL;DR

This paper reports a search for $CP$ violation in a specific charm baryon decay using model-independent methods on LHCb data, finding no evidence of $CP$ violation.

Contribution

It introduces a novel application of model-independent techniques to search for $CP$ violation in $oldsymbol{ ext{Xi}_c^+}$ decays using Dalitz plot analysis.

Findings

Data are consistent with no $CP$ violation.

First application of model-independent methods in this decay channel.

Utilizes 3.0 fb$^{-1}$ of LHCb data at 7 and 8 TeV.

Abstract

A first search for $CP$ violation in the Cabibbo-suppressed $\Xi_c^+\rightarrow pK^-\pi^+$ decay is performed using both a binned and an unbinned model-independent technique in the Dalitz plot. The studies are based on a sample of proton-proton collision data, corresponding to an integrated luminosity of $3.0~{\rm fb^{-1}}$, and collected by the LHCb experiment at centre-of-mass energies of $7$ and $8~\rm TeV$. The data are consistent with the hypothesis of no $CP$ violation.