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Search for CP violation in the phase space of D0 → ππ+π0 decays with the energy test

Published version
Peer-reviewed

Repository DOI


Change log

Authors

Aaij, R 
Abdelmotteleb, ASW 
Abellan Beteta, C 
Abudinén, F 
Ackernley, T 

Abstract

jats:titleAjats:scbstract</jats:sc> </jats:title>jats:pA search for jats:italicCP</jats:italic> violation in Djats:sup0</jats:sup> → jats:italicπ</jats:italic>jats:supjats:italic−</jats:italic></jats:sup>jats:italicπ</jats:italic>jats:sup+</jats:sup>jats:italicπ</jats:italic>jats:sup0</jats:sup> decays is reported, using jats:italicpp</jats:italic> collision data collected by the LHCb experiment from 2015 to 2018 corresponding to an integrated luminosity of 6 fbjats:supjats:italic−</jats:italic>1</jats:sup>. An unbinned model-independent approach provides sensitivity to local jats:italicCP</jats:italic> violation within the two-dimensional phase space of the decay. The method is validated using the Cabibbo-favoured channel Djats:sup0</jats:sup> → Kjats:supjats:italic−</jats:italic></jats:sup>jats:italicπ</jats:italic>jats:sup+</jats:sup>jats:italicπ</jats:italic>jats:sup0</jats:sup> and background regions of the signal mode. The results are consistent with jats:italicCP</jats:italic> symmetry in this decay.</jats:p>

Description

Keywords

5106 Nuclear and Plasma Physics, 5107 Particle and High Energy Physics, 4902 Mathematical Physics, 49 Mathematical Sciences, 51 Physical Sciences

Journal Title

Journal of High Energy Physics

Conference Name

Journal ISSN

1126-6708
1029-8479

Volume Title

2023

Publisher

Springer Science and Business Media LLC