Copertina

First evidence of CP violation in beauty baryon to charmonium decays

A study of the difference in the CP asymmetries between Λb0→J/ψpπ- and Λb0→J/ψpK- decays, ΔACP, is performed using proton-proton collision data collected by the LHCb experiment in the years 2015-2018, corresponding to an integrated luminosity of 6fb-1. This quantity is measured to be ΔACP=(4.03±1.18...

Descrizione completa

Salvato in:
Dettagli Bibliografici
Autori principali: Aaij, Roel (Autore) , Bachmann, Sebastian (Autore) , Carus, Leon (Autore) , Caspary, Rowina (Autore) , Celani, Sara (Autore) , Cocha Toapaxi, Carlos (Autore) , Dittmann, Lucas (Autore) , Glaser, Fabian (Autore) , Han, Xiaoxue (Autore) , Hansmann-Menzemer, Stephanie (Autore) , Herrero Gascón, Paula (Autore) , Langenbruch, Christoph (Autore) , Leverington, Blake (Autore) , Marks, Jörg (Autore) , Morgenthaler, Maurice Pierre (Autore) , Ruiz Diaz, Miguel (Autore) , Schiller, Manuel (Autore) , Tat, Martin Duy (Autore) , Uecker, Lennart Henning (Autore) , Uwer, Ulrich (Autore) , Wang, Chishuai (Autore) , Wolf, Tom (Autore) , Zhelezov, Alexey (Autore)
Ente Autore: LHCb Collaboration (Autore)
Natura: Article (Journal)
Lingua:inglese
Pubblicazione: 15 February 2026
In: Science bulletin
Year: 2026, Volume: 71, Fascicolo: 3, Pages: 547-557
ISSN:2095-9281
DOI:10.1016/j.scib.2025.12.028
Accesso online:Verlag, kostenfrei, Volltext: https://doi.org/10.1016/j.scib.2025.12.028
Verlag, kostenfrei, Volltext: https://www.sciencedirect.com/science/article/pii/S2095927325012770
Testo
Note sull'autore:LHCb collaboration
Descrizione
Riassunto:A study of the difference in the CP asymmetries between Λb0→J/ψpπ- and Λb0→J/ψpK- decays, ΔACP, is performed using proton-proton collision data collected by the LHCb experiment in the years 2015-2018, corresponding to an integrated luminosity of 6fb-1. This quantity is measured to be ΔACP=(4.03±1.18±0.23)%, where the first uncertainty is statistical and the second is systematic. When combined with the previous LHCb result, a value of ΔACP=(4.31±1.06±0.28)% is obtained, corresponding to a significance of 3.9σ against the CP symmetry hypothesis. Studies of triple-product asymmetries, which provide an additional probe of CP violation, show no significant deviation from CP symmetry.
Descrizione del documento:Online verfügbar 29 December 2025, Artikelversion 16 February 2026
LHCb collaboration: R. Aaij, S. Bachmann, L. Carus, R. Caspary, S. Celani, C. Cocha Toapaxi, L. Dittmann, F.C. Glaser, X. Han, S. Hansmann-Menzemer, P. Herrero Gascon, C. Langenbruch, B. Leverington, J. Marks, M.P. Morgenthaler, M. Ruiz Diaz, M. Schiller, M.D. Tat, L.H. Uecker, U. Uwer, C. Wang, T. Wolf, A. Zhelezov [und viele weitere]
Gesehen am 03.06.2026
Descrizione fisica:Online Resource
ISSN:2095-9281
DOI:10.1016/j.scib.2025.12.028

Documenti analoghi