Abstract

In this paper we discuss the recent finalized analyses by the KLOE experiment at DA$\Phi$NE: the CPT and Lorentz invariance test with entangled $K^0 \bar{K}^0$ pairs, and the precision measurement of the branching fraction of the decay ${ K^+} \rightarrow \pi^+\pi^-\pi^+(\gamma)$. We also present the status of an ongoing analysis aiming to precisely measure the $K^{\pm} $ mass.

Highlights

  • IntroductionThe KLOE experiment at DAΦNE, the Frascati φ–factory, measured all the most relevant branching ratios of KL, KS, and K± mesons, their lifetimes, the K → π form factors, and several parameters and observables allowing to perform CP, CPT symmetries tests, and a verification of the validity of Cabibbo unitarity and lepton universality (a review can be found in Ref.[1])

  • The KLOE experiment at DAΦNE, the Frascati φ–factory, measured all the most relevant branching ratios of KL, KS, and K± mesons, their lifetimes, the K → π form factors, and several parameters and observables allowing to perform CP, CPT symmetries tests, and a verification of the validity of Cabibbo unitarity and lepton universality.In this paper we focus the discussion on the two most recent results on kaon physics: a CPT and Lorentz invariance test with entangled K0K 0 pairs, and the precision measurement of the branching fraction of the decay K+ → π+π−π+(γ)

  • Main background source is the kaon regeneration on the spherical beam pipe, suppressed by selecting events with both KS and KL decaying inside the beam pipe, giving at the end of the analysis chain a contamination at kaonatkloe4 ̇arxiv printed on September 25, 2021

Read more

Summary

Introduction

The KLOE experiment at DAΦNE, the Frascati φ–factory, measured all the most relevant branching ratios of KL, KS, and K± mesons, their lifetimes, the K → π form factors, and several parameters and observables allowing to perform CP, CPT symmetries tests, and a verification of the validity of Cabibbo unitarity and lepton universality (a review can be found in Ref.[1]). In this paper we focus the discussion on the two most recent results on kaon physics: a CPT and Lorentz invariance test with entangled K0K 0 pairs, and the precision measurement of the branching fraction of the decay K+ → π+π−π+(γ). (d) the direct T–symmetry test with entangled neutral kaons; The status of analysis (a) is presented in this paper, while (b), (c) and (d) are the subjects of separate contributions in this issue [2, 3, 4]

CPT and Lorentz–invariance test
20 Fit Data
The charged kaon mass
Findings
Conclusions
Full Text
Paper version not known

Talk to us

Join us for a 30 min session where you can share your feedback and ask us any queries you have

Schedule a call