CIPANP 2018 - Thirteenth Conference on the Intersections of Particle and Nuclear Physics

Dispersive Analysis of Hadronic Light-by-Light Scattering and the Muon's (g-2)

30 May 2018, 14:40

20m

South Foyer | Pinon Room (Hyatt Regency Indian Wells Conference Center)

Parallel PPHI Precision Physics at High Intensities

Speaker

Prof. Marc Vanderhaeghen (Johannes Gutenberg-Universität Mainz)

Description

In my talk, I will present our recent dispersive analysis of the $\gamma \gamma^\star \to \pi\pi, \pi\eta$ processes from the threshold up to 1.4 GeV in the two photon invariant mass. These amplitudes serve as important input to constrain the hadronic piece of light-by-light scattering contribution to (g-2) and support the current experimental program at BESIII. As well, I will present an application of the light-by-light scattering sum rules to the $\gamma \gamma^\star$-production of mesons in light of the new data by the Belle Collaboration on the transition form factors.

Presentation materials

Slides

7-0-gminus2_vanderhaeghen_CIPANP2018.pdf