Pith. sign in

REVIEW 3 cited by

Observation of Direct CP Violation in K_{S,L} to \pi \pi Decays

Not yet reviewed by Pith; the record is open.

This paper has not been read by Pith yet. Machine review is queued; the pith claim, tier, and objections will appear here once it completes.

SPECIMEN: schema-true, not a live event

T0 review · schema-true

One-sentence machine reading of the paper's core claim.

pith:XXXXXXXX · record.json · timestamp

arxiv hep-ex/9905060 v2 pith:VZ2JVDFX submitted 1999-05-29 hep-ex

classification hep-ex
keywords decayepsilonviolationcompareddatadecaysdefinitivelydirect
verification ladder T0 review T1 audit T2 compute T3 formal

Signed reviews

No signed human review yet.

0 comments
read the original abstract

We have compared the decay rates of K_L and K_S to \pi^+ \pi^- and \pi^0 \pi^0 final states using a subset of the data from the KTeV experiment (E832) at Fermilab. We find that the direct-CP-violation parameter Re(\epsilon'/\epsilon) is equal to (28.0 \pm 3.0 (stat) \pm 2.8 (syst)) \times 10^{-4}. This result definitively establishes the existence of CP violation in a decay process.

Discussion (0). Continue with ORCID to comment.

Forward citations

Cited by 3 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

  1. Search for $CP$ violation in $\Xi_c^+\to\Sigma^+h^+h^-$ and $\Lambda_c^+\to ph^+h^-$ at Belle II

    hep-ex 2025-09 accept novelty 8.0 of 10

    First individual A_CP measurements for Xi_c+ -> Sigma+ h+h- and Lambda_c+ -> p h+h- decays, all consistent with CP symmetry and with U-spin sum-rule predictions.

  2. Measurement of the CP asymmetry in $D^+ \to \pi^+ \pi^0$ decays at Belle II

    hep-ex 2025-06 accept novelty 5.0 of 10

    The new world-best measurement of the CP asymmetry in D+ -> pi+ pi0 decays is (-1.8 +/- 0.9 +/- 0.1)%, consistent with zero and with the Standard Model.

  3. Contributions of interference and non-interference components to CP asymmetries in heavy meson decays

    hep-ph 2026-05 unverdicted novelty 4.0 of 10

    A Legendre-polynomial-zero partitioning scheme with sign weighting defines new observables A±^asy,l and ACP^asy,l that isolate interference versus non-interference terms in CP asymmetries for heavy meson decays.

Pith tools