# Search for CP violation through an amplitude analysis of D <sup>0</sup> → K <sup>+</sup> K <sup>−</sup> π <sup>+</sup> π <sup>−</sup> decays

Aaij, R, Abellán Beteta, C, Adeva, B, Adinolfi, M, Aidala, CA, Ajaltouni, Z, Akar, S, Albicocco, P, Albrecht, J, Alessio, F
et al (show 90 more authors) (2019) Search for CP violation through an amplitude analysis of D <sup>0</sup> → K <sup>+</sup> K <sup>−</sup> π <sup>+</sup> π <sup>−</sup> decays. Journal of High Energy Physics, 2019 (2).

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## Abstract

© 2019, The Author(s). A search for CP violation in the Cabibbo-suppressed D 0 → K + K − π + π − decay mode is performed using an amplitude analysis. The measurement uses a sample of pp collisions recorded by the LHCb experiment during 2011 and 2012, corresponding to an integrated luminosity of 3.0 fb −1 . The D 0 mesons are reconstructed from semileptonic b-hadron decays into D 0 μ − X final states. The selected sample contains more than 160 000 signal decays, allowing the most precise amplitude modelling of this D 0 decay to date. The obtained amplitude model is used to perform the search for CP violation. The result is compatible with CP symmetry, with a sensitivity ranging from 1% to 15% depending on the amplitude considered.[Figure not available: see fulltext.]

Item Type: Article Symplectic Admin 09 May 2019 09:38 08 Dec 2021 08:49 10.1007/JHEP02(2019)126 http://10.0.3.239/JHEP02(2019)126 https://livrepository.liverpool.ac.uk/id/eprint/3040400