Alladi Ramakrishnan Hall

Three loop QCD corrections to massive form factors and its asymptotic behaviour

Narayan Rana

INFN Milan

The heavy quark form factors are among the most important ingredients in top quark physics.
In the first part of this talk, we present the computational method to obtain the three loop QCD
corrections to the heavy quark form factors. We use a novel technique based on differential
equations, to obtain the master integrals. In the second part of the talk, we study the high energy
behaviour of these form factors. We present the corresponding renormalization group equation
which not only governs the structure of infrared divergences, but also controls the Sudakov logarithms.