Measurement of branching fractions and CP asymmetries in Λ0b (Ξ0b) → pK0Sh− decays
A study of Λ0b and Ξ0b baryon decays to the final states pK0Sπ− and pK0SK− is performed using pp collision data collected by the LHCb experiment, corresponding to an integrated luminosity of 9 fb−1. The decays Λ0b → pK0SK− and Ξ0b → pK0SK− are observed for the first time, with significances reaching...
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| Hauptverfasser: | , , , , , , , , , , , , , , , , , , , , , , , , , , , , |
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| Körperschaft: | |
| Dokumenttyp: | Article (Journal) |
| Sprache: | Englisch |
| Veröffentlicht: |
21 October 2025
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| In: |
Journal of high energy physics
Year: 2025, Heft: 10, Pages: 1-28 |
| ISSN: | 1029-8479 |
| DOI: | 10.1007/JHEP10(2025)169 |
| Online-Zugang: | Verlag, kostenfrei, Volltext: https://doi.org/10.1007/JHEP10(2025)169 |
| Verfasserangaben: | the LHCb collaboration* |
| Zusammenfassung: | A study of Λ0b and Ξ0b baryon decays to the final states pK0Sπ− and pK0SK− is performed using pp collision data collected by the LHCb experiment, corresponding to an integrated luminosity of 9 fb−1. The decays Λ0b → pK0SK− and Ξ0b → pK0SK− are observed for the first time, with significances reaching eight standard deviations. The branching fractions and integrated CP asymmetries are measured for the Λ0b → pK0Sπ−, Λ0b → pK0SK−, and Ξ0b → pK0SK− decays. For the decay Λ0b → pK0Sπ−, the CP asymmetries are measured in different regions of the Dalitz plot. No evidence of CP violation is observed. |
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| Beschreibung: | Veröffentlicht: 21. Oktober 2025 *The LHCb collaboration: R. Aaij, S. Bachmann, L. Carus, R. Caspary, S. Celani, C. Cocha Toapaxi, L. Dittmann, S. Esen, F.C. Glaser, P.A. Günther, X. Han, S. Hansmann-Menzemer, P. Herrero Gascon, C. Langenbruch, B. Leverington, J. Marks, M.P. Morgenthaler, S.R. Roy, M. Ruiz Diaz, M. Schiller, M.D. Tat, G. Tuci, L.H. Uecker, D.J. Unverzagt, U. Uwer, C. Wang, T. Wolf, Y. Zhao, A. Zhelezov [und sehr viele weitere Personen] Im Titel sind die Buchstaben b und S tiefgestellt sowie die Zahlen 0 und das Minuszeichen hochgestellt, dabei steht 0 über b und 0 über S Gesehen am 21.04.2026 |
| Beschreibung: | Online Resource |
| ISSN: | 1029-8479 |
| DOI: | 10.1007/JHEP10(2025)169 |