Physics with the KLOE-2 experiment at the upgraded DA$\phi$NE

TL;DR

The paper discusses the capabilities of the KLOE-2 experiment at DA$oldsymbol{ extphi}$NE for advancing particle physics research, including tests of the Standard Model, CPT symmetry, meson decays, light scalar mesons, dark matter searches, and e+e- physics.

Contribution

It presents recent theoretical and experimental developments enabled by KLOE-2, highlighting new opportunities in kaon physics, meson decay measurements, and dark matter searches.

Findings

Enhanced sensitivity to CPT and Quantum Mechanics in kaon systems.

Improved measurements of non-leptonic and radiative kaon decays.

Potential discovery of narrow di-lepton resonances related to dark matter.

Abstract

Investigation at a $\phi$--factory can shed light on several debated issues in particle physics. We discuss: i) recent theoretical development and experimental progress in kaon physics relevant for the Standard Model tests in the flavor sector, ii) the sensitivity we can reach in probing CPT and Quantum Mechanics from time evolution of entangled kaon states, iii) the interest for improving on the present measurements of non-leptonic and radiative decays of kaons and eta/eta$^\prime$ mesons, iv) the contribution to understand the nature of light scalar mesons, and v) the opportunity to search for narrow di-lepton resonances suggested by recent models proposing a hidden dark-matter sector. We also report on the $e^+ e^-$ physics in the continuum with the measurements of (multi)hadronic cross sections and the study of gamma gamma processes.