Search for time-dependent 𝐶𝑃 violation in 𝐷0→𝜋+𝜋−𝜋0 decays
A measurement of time-dependent 𝐶𝑃 violation in 𝐷0→𝜋+𝜋−𝜋0 decays using a 𝑝𝑝 collision data sample collected by the LHCb experiment in 2012 and from 2015 to 2018, corresponding to an integrated luminosity of 7.7 fb−1, is presented. The initial flavor of each 𝐷0 candidate is determined from the ch...
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| Hauptverfasser: | , , , , , , , , , , , , , , , , , , , , , , , , , |
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| Körperschaft: | |
| Dokumenttyp: | Article (Journal) |
| Sprache: | Englisch |
| Veröffentlicht: |
5 September 2024
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| In: |
Physical review letters
Year: 2024, Jahrgang: 133, Heft: 10, Pages: 1-12 |
| ISSN: | 1079-7114 |
| DOI: | 10.1103/PhysRevLett.133.101803 |
| Online-Zugang: | Verlag, lizenzpflichtig, Volltext: https://doi.org/10.1103/PhysRevLett.133.101803 Verlag, lizenzpflichtig, Volltext: https://link.aps.org/doi/10.1103/PhysRevLett.133.101803 |
| Verfasserangaben: | LHCb Collaboration |
| Zusammenfassung: | A measurement of time-dependent 𝐶𝑃 violation in 𝐷0→𝜋+𝜋−𝜋0 decays using a 𝑝𝑝 collision data sample collected by the LHCb experiment in 2012 and from 2015 to 2018, corresponding to an integrated luminosity of 7.7 fb−1, is presented. The initial flavor of each 𝐷0 candidate is determined from the charge of the pion produced in the 𝐷*(2010)+→𝐷0𝜋+ decay. The decay 𝐷0→𝐾−𝜋+𝜋0 is used as a control channel to validate the measurement procedure. The gradient of the time-dependent 𝐶𝑃 asymmetry Δ𝑌 in 𝐷0 →𝜋+𝜋−𝜋0 decays is measured to be Δ𝑌=(−1.3±6.3±2.4)×10−4, where the first uncertainty is statistical and the second is systematic, which is compatible with 𝐶𝑃 conservation. |
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| Beschreibung: | 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 |
| Beschreibung: | Online Resource |
| ISSN: | 1079-7114 |
| DOI: | 10.1103/PhysRevLett.133.101803 |