Search for $CP$ violation in $D^0\rightarrow \pi^-\pi^+\pi^0$ decays at LHCb

Shanzhen Chen

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arXiv · 1503.00160

Search for $CP$ violation in $D^0\rightarrow \pi^-\pi^+\pi^0$ decays at LHCb

Shanzhen Chen

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Abstract

The LHCb experiment has recorded the world's largest sample of charmed meson decays. This paper presents a study of a $D^0$ meson decaying into a final state containing a neutral pion in LHCb. The search for $CP$ violation exploits a novel model-independent unbinned technique to assign a $p$-value for the no $CP$ violation hypothesis. With a data sample size exceeding that of previous measurements by almost an order of magnitude the world's best sensitivity is obtained. The $p$-value of no CP violation hypothesis given data of $D^0\rightarrow \pi^-\pi^+\pi^0$ decay analysed is found to be $(2.6 \pm 0.5)\times 10^-2$.

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Shanzhen Chen. 2015-02-28. Search for $CP$ violation in $D^0\rightarrow \pi^-\pi^+\pi^0$ decays at LHCb. https://arxiv.org/abs/1503.00160

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