PHIPSI13 - International Workshop on e+e- collisions from Phi to Psi 2013

Session

Gamma-gamma Physics

Sep 9, 2013, 2:05 PM

Aula Amaldi (Dip. di Fisica - "Sapienza" Universita' di Roma - G. Marconi building)

51. Gamma-gamma physics at KLOE/KLOE-2

Danilo Babusci (LNF)

9/9/13, 2:05 PM

52. Gamma-gamma physics at BELLE

Dr Sadaharu Uehara

9/9/13, 2:25 PM

We report a high-statistics measurement of the differential cross section of the process gamma gamma --> Ks Ks with the Belle detector. We study spectroscopy of light-quark resonances and charmonia and test QCD models using the data. We summarize our systematic measurements of different processes of gamma gamma --> meson pair production based on the parameterization of the cross...

23. The anomalous process gamma pi --> pi pi and its impact on the pi^0 transition form factor

Prof. Bastian Kubis (University of Bonn)

9/9/13, 3:05 PM

The process gamma pi --> pi pi, in the limit of vanishing photon and pion energies, is determined by the chiral anomaly. This reaction can be investigated experimentally using Primakoff reactions, as currently done at COMPASS. We derive a dispersive representation that allows to extract the chiral anomaly from cross-section measurements up to 1 GeV, where effects of the rho resonance are...

54. Eta and eta_prime transition form factors from rational approximants

Rafel Escribano (Universitat Autònoma de Barcelona)

9/9/13, 3:25 PM