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Search for CP violation in D0→π−π+π0 decays with the energy test

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    <subfield code="a">&lt;p&gt;A search for time-integrated CP violation in the Cabibbo-suppressed decay D0→π−π+π0 is performed using for the first time an unbinned model-independent technique known as the energy test. Using proton–proton collision data, corresponding to an integrated luminosity of 2.0 fb−1 collected by the LHCb detector at a centre-of-mass energy of s=8 TeV , the world's best sensitivity to CP violation in this decay is obtained. The data are found to be consistent with the hypothesis of CP symmetry with a p -value of (2.6±0.5)% .&lt;/p&gt;</subfield>
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