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Search for time-dependent 𝐢⁒𝑃 violation in 𝐷0β†’πœ‹+β’πœ‹βˆ’β’πœ‹0 decays

A measurement of time-dependent 𝐢⁒𝑃 violation in 𝐷0β†’πœ‹+β’πœ‹βˆ’β’πœ‹0 decays using a 𝑝⁒𝑝 collision data sample collected by the LHCb experiment in 2012 and from 2015 to 2018, corresponding to an integrated luminosity of 7.7 fbβˆ’1, is presented. The initial flavor of each 𝐷0 candidate is determined from the ch...

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Main Authors: Aaij, Roel (Author) , Bachmann, Sebastian (Author) , Carus, Leon (Author) , Caspary, Rowina (Author) , Celani, Sara (Author) , Cocha Toapaxi, Carlos (Author) , De Cian, Michel (Author) , Dittmann, Lucas (Author) , Glaser, Fabian (Author) , Han, Xiaoxue (Author) , Hansmann-Menzemer, Stephanie (Author) , Herrero Gascón, Paula (Author) , Langenbruch, Christoph (Author) , Leverington, Blake (Author) , Marks, Jörg (Author) , Morgenthaler, Maurice Pierre (Author) , Roy, Shreya (Author) , Ruiz Diaz, Miguel (Author) , Tuci, Giulia (Author) , Uecker, Lennart Henning (Author) , Unverzagt, Daniel Joachim (Author) , Uwer, Ulrich (Author) , Wang, Chishuai (Author) , Witola, Lukas (Author) , Zhao, Ya (Author) , Zhelezov, Alexey (Author)
Corporate Author: LHCb Collaboration (Author)
Format: Article (Journal)
Language:English
Published: 5 September 2024
In: Physical review letters
Year: 2024, Volume: 133, Issue: 10, Pages: 1-12
ISSN:1079-7114
DOI:10.1103/PhysRevLett.133.101803
Online Access:Verlag, lizenzpflichtig, Volltext: https://doi.org/10.1103/PhysRevLett.133.101803
Verlag, lizenzpflichtig, Volltext: https://link.aps.org/doi/10.1103/PhysRevLett.133.101803
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Author Notes:LHCb Collaboration
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Summary:A measurement of time-dependent 𝐢⁒𝑃 violation in 𝐷0β†’πœ‹+β’πœ‹βˆ’β’πœ‹0 decays using a 𝑝⁒𝑝 collision data sample collected by the LHCb experiment in 2012 and from 2015 to 2018, corresponding to an integrated luminosity of 7.7 fbβˆ’1, is presented. The initial flavor of each 𝐷0 candidate is determined from the charge of the pion produced in the 𝐷*⁒(2010)+→𝐷0β’πœ‹+ decay. The decay 𝐷0β†’πΎβˆ’β’πœ‹+β’πœ‹0 is used as a control channel to validate the measurement procedure. The gradient of the time-dependent 𝐢⁒𝑃 asymmetry Ξ”β’π‘Œ in 𝐷0 β†’πœ‹+β’πœ‹βˆ’β’πœ‹0 decays is measured to be Ξ”β’π‘Œ=(βˆ’1.3Β±6.3Β±2.4)Γ—10βˆ’4, where the first uncertainty is statistical and the second is systematic, which is compatible with 𝐢⁒𝑃 conservation.
Item Description:The LHCb collaboration: R. Aaij, S. Bachmann, L. Carus, R. Caspary, S. Celani, C. Cocha Toapaxi, M. De Cian, L. Dittmann, F.C. Glaser, P.A. Günther, X. Han, S. Hansmann-Menzemer, P. Herrero Gascon, J. Hu, C. Langenbruch, B. Leverington, J. Marks, M.P. Morgenthaler, S.R. Roy, M. Ruiz Diaz, G. Tuci, L.H. Uecker, D.J. Unverzagt, U. Uwer, C. Wang, L. Witola, Y. Zhao, A. Zhelezov [und zahlreiche weitere]
Gesehen am 14.10.2026
Physical Description:Online Resource
ISSN:1079-7114
DOI:10.1103/PhysRevLett.133.101803

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