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

Abstract : 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)%.
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Submitted on : Friday, October 24, 2014 - 5:15:33 PM
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R. Aaij, Y. Amhis, S. Barsuk, M. Borsato, O. Kochebina, et al.. Search for CP violation in D0→π−π+π0 decays with the energy test. Physics Letters B, Elsevier, 2015, 740, pp.158-167. ⟨10.1016/j.physletb.2014.11.043⟩. ⟨in2p3-01077463⟩



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