Search for CP violation in the phase space of D° → π−π+π° decays with the energy test

LHCb Collaboration; Aaij, Roel; Chobanova, Veronika; Williams, Mark

Use this link to cite:

http://hdl.handle.net/2183/42112

Search for CP violation in the phase space of D° → π−π+π° decays with the energy test

Files

Chobanova_Veronika_2023_Search_CP_violation_phase_space.pdf (1.1 MB)

Identifiers

URI: http://hdl.handle.net/2183/42112

DOI: https://doi.org/10.1007/JHEP09(2023)129

Publication date

2023-09

Authors

LHCb Collaboration

Aaij, Roel

Chobanova, Veronika

Williams, Mark

Bibliographic citation

The LHCb collaboration., Aaij, R., Abdelmotteleb, A.S.W. et al. Search for CP violation in the phase space of D° → π−π+π° decays with the energy test. J. High Energ. Phys. 2023, 129 (2023). https://doi.org/10.1007/JHEP09(2023)129

Abstract

[Abstract] A search for CP violation in D° → π−π+π° decays is reported, using pp collision data collected by the LHCb experiment from 2015 to 2018 corresponding to an integrated luminosity of 6 fb¯¹. An unbinned model-independent approach provides sensitivity to local CP violation within the two-dimensional phase space of the decay. The method is validated using the Cabibbo-favoured channel D° → K¯π+π° and background regions of the signal mode. The results are consistent with CP symmetry in this decay.