Speaker
Dr
Stefano Laporta
(University of Padova)
Description
I this talk I will show the result of the 1100-digits calculation of the 4-loop QED contribution to the first derivative of the Dirac form factor at zero momentum transfer. An analytical fit has been obtained, and I will describe its structure. I will discuss also the contribution of this result to the Lamb shift of hydrogen.
Primary author
Dr
Stefano Laporta
(University of Padova)
