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Open Quantum Systems Decoherence Entanglement Theory Quantum Correlations

First evidence of CP violation in beauty baryon to charmonium decays.

PubMed
Authors: LHCb collaboration

Year

2026

Paper ID

9942

Status

Peer-reviewed

Abstract Read

~2 min

Abstract Words

99

Citations

0

Abstract

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

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  • A study of the difference in the CP asymmetries between Λ→J/ψpπ and Λ→J/ψpK decays, ΔA, is performed using proton-proton collision data collected by the LHCb experiment in the...

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References & Citation Signals

[1] DOI https://doi.org/10.1016/j.scib.2025.12.028 [2] Publisher https://pubmed.ncbi.nlm.nih.gov/41558932/

Local Citation Graph (Related-Paper Links)

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External citation index: OpenAlex citation signal • updated 2026-06-14 16:26:01

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