Search for CP violation in the decay $D^+ \to \pi^-\pi^+\pi^+$

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Abstract

A search for CP violation in the phase space of the decay $D^+\to\pi^-\pi^+\pi^+$ is reported using $pp$ collision data, corresponding to an integrated luminosity of 1.0 fb$^{-1}$, collected by the LHCb experiment at a centre-of-mass energy of 7 TeV. The Dalitz plot distributions for $3.1\times 10^6$ $D^+$ and $D^-$ candidates are compared with binned and unbinned model-independent techniques. No evidence for CP violation is found.

 Invariant-mass distributions for (a) $D ^+$ and (b) $D ^+_ s$ candidates in the momentum range $50 Tables and captions  Results for the$D^+ \rightarrow \pi^-\pi^+\pi^+\$ decay sample using the adaptive binning scheme with different numbers of bins. The number of degrees of freedom is the number of bins minus 1. Table_1.pdf [29 KiB] HiDef png [57 KiB] Thumbnail [10 KiB] tex code

Created on 11 December 2018.Citation count from INSPIRE on 11 December 2018.