γγ Physics and Transition Form Factors with KLOE/KLOE2.

The KLOE results on the measurement of the transition form factors of the η and π0 mesons in φ Dalitz decays are presented. Also we report in the determination of the Γ(η → γγ) in γγ collisions, for which KLOE has delivered the most precise measurement up to the date. The prospects for γγ physics of the upgraded detector KLOE-2, which is taking data aiming to collect more than 5 fb−1 by March 2018, are reviewed. [ABSTRACT FROM AUTHOR]