Search for CP violation in $D^{+} \to K^{-}K^{+}\pi^{+}$ decays

TL;DR

This study conducted a model-independent search for direct CP violation in the decay D+ to K- K+ pi+ using LHCb data, finding no evidence of CP asymmetry in approximately 370,000 decays.

Contribution

It presents the first model-independent analysis of CP violation in this decay mode with a large dataset from LHCb, employing multiple binning schemes.

Findings

No evidence of CP asymmetry was observed.

The analysis used four different binning schemes for the Dalitz plot.

Approximately 370,000 decay events were analyzed.

Abstract

A model-independent search for direct CP violation in the Cabibbo suppressed decay $D^+ \to K^- K^+\pi^+$ in a sample of approximately 370,000 decays is carried out. The data were collected by the LHCb experiment in 2010 and correspond to an integrated luminosity of 35 pb$^{-1}$. The normalized Dalitz plot distributions for $D^+$ and $D^-$ are compared using four different binning schemes that are sensitive to different manifestations of CP violation. No evidence for CP asymmetry is found.