LHCb Collaboration (Including: Back, J. J., Blake, Thomas, Brossa Gonzalo, A., Costa Sobral, C. M., Crocombe, Andrew, Gershon, T. J., Kreps, Michal, Latham, Thomas, Loh, David, Lupton, Oliver, Mathad, A., Millard, E., Poluektov, Anton and Wicht, Jean). (2019) Search for CP violation through an amplitude analysis of D0→K+K−π+π− decays. Journal of High Energy Physics, 2019 . 126. doi:10.1007/JHEP02(2019)126 ISSN 1029-8479.

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Abstract

A search for CP violation in the Cabibbo-suppressed D0 → 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 D0 mesons are reconstructed from semileptonic b-hadron decays into D0μ−X final states. The selected sample contains more than 160 000 signal decays, allowing the most precise amplitude modelling of this D0 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.

Item Type:	Journal Article
Divisions:	Faculty of Science, Engineering and Medicine > Science > Physics
Journal or Publication Title:	Journal of High Energy Physics
Publisher:	Springer
ISSN:	1029-8479
Official Date:	20 February 2019
Dates:	Date Event 20 February 2019 Published 4 February 2019 Accepted
Volume:	2019
Article Number:	126
DOI:	10.1007/JHEP02(2019)126
Institution:	University of Warwick
Status:	Peer Reviewed
Publication Status:	Published
Access rights to Published version:	Open Access (Creative Commons)
Related URLs:	Publisher Other Repository
Open Access Version:	ArXiv
Contributors:	Contribution Name Contributor ID Research Group LHCb Collaboration, UNSPECIFIED

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