Volume 390 - 40th International Conference on High Energy physics (ICHEP2020) - Parallel: Strong Interactions and Hadron Physics
Results and perspectives on hadron physics at KLOE/KLOE-2
V. De Leo* on behalf of the KLOE-2 Collaboration
*corresponding author
Full text: pdf
Pre-published on: January 11, 2021
Published on:
Abstract
The KLOE-2 data-taking at the $e^+e^-$ DA$\Phi$NE collider in Frascati has been completed by achieving an integrated luminosity of more than 5 fb$^{-1}$ at the $\phi$ peak. KLOE-2 is an updated version of the KLOE experiment with new detectors and an extended physics program, including light mesons investigations at unprecedented statistics. The KLOE/KLOE-2 data sample corresponds to more than $3\times10^8$ eta-meson events. The huge available statistics has been used to search for the P, CP violating $\eta \rightarrow \pi^+\pi^-$, obtaining the most stringent upper limit for this decay by using 1.7 fb$^{-1}$ of KLOE data. The status of the $\eta \rightarrow \pi^0 \gamma \gamma$ decay will be reported and also the progress on the investigation on the B boson, a postulated leptophobic mediator of dark forces, which uses the same five photon final state. Among the aims of the KLOE-2 experiment there is the study of the reaction $e^+e^- \rightarrow e^+e^-\gamma\gamma \rightarrow e^+e^-X$ by tagging the final state of the leptons. Data stability studies, based on very low angle Bhabha cross section measurement, and updates on $\gamma\gamma \rightarrow \pi^0$ analysis will be presented.
How to cite

Metadata are provided both in "article" format (very similar to INSPIRE) as this helps creating very compact bibliographies which can be beneficial to authors and readers, and in "proceeding" format which is more detailed and complete.

Open Access