Search for CP violation in \(D^0\to\pi^-\pi^+\pi^0\) decays with the energy test

• Published in: arXiv.org
• Main Authors: collaboration, LHCb, Alves, A A, Andreotti, M, Andrews, J E, Baesso, C, Barsuk, S, Belogurov, S, Bondar, N, Borghi, S, Brambach, T, Brett, D, M Calvo Gomez, Casse, G, Cattaneo, M, Closier, J, Cojocariu, L, Collazuol, G, Cowan, G A, De Paula, L, Deckenhoff, M, Donleavy, S, Dreimanis, K, Dujany, G, Dziurda, A, Dzyuba, A, I El Rifai, H -M Evans, Farinelli, C, Frank, M, Gandelman, M, Garrido, L, Graugés, E, Hampson, T, Harnew, N, Harnew, S T, J He, Hennessy, K, Henrard, P, Hill, D, Hulsbergen, W, Hussain, N, Ketel, T, Kolpin, M, Komarov, I, Kravchuk, L, Lacarrere, D, Lafferty, G, Langhans, B, Lohn, S, Lupton, O, Maguire, K, Manca, G, Marchand, J F, Massafferri, A, Meier, F, Morandin, M, Mountain, R, Müller, K, Nasteva, I, Nikitin, N, Novoselov, A, Ogilvy, S, Oldeman, R, Otalora Goicochea, J M, Pappalardo, L L, Petrolini, A, Pietrzyk, B, Pinci, D, Popovici, B, Price, E, Punzi, G, Ricciardi, S, Richards, S, A Romero Vidal, Sail, P, Saitta, B, Sarti, A, Schmelling, M, Skillicorn, I, Soler, F J P, Soomro, F, Spradlin, P, Sridharan, S, Stagni, F, Stroili, R, Swientek, K, Syropoulos, V, Teklishyn, M, Topp-Joergensen, S, Torr, N, Tran, M T, Tsaregorodtsev, A, Velthuis, J J, Vilasis-Cardona, X, Walsh, J, Watson, N K, Wishahi, J, Wormser, G, Yang, Z, Zhelezov, A
• Format: Paper
• Language: English
• Published: Ithaca Cornell University Library, arXiv.org 11.12.2014
• Subjects: CP violation; Decay; Luminosity; Matter & antimatter; Particle collisions
• ISSN: 2331-8422
• DOI: 10.48550/arxiv.1410.4170

A search for time-integrated CP violation in the Cabibbo-suppressed decay \(D^0\to\pi^-\pi^+\pi^0\) 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 \(\sqrt{s}\) = 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)%.