Nuclear Physics & RIKEN Theory Seminar
"Radiative pT-broadening of high energy quarks and gluons in QCD matter"
Presented by Zhe Liu, Columbia University
Friday, November 15, 2013, 2 pm
Small Seminar Room, Bldg. 510
Hosted by: Bjoern Schenke
High energy quarks and gluons passing through hot and cold nuclear matter have their transverse momentum distribution broadened due to multiple scatterings with the constituents of the nuclear matter. The transeverse momentum broadening of the energetic partons play an important role in the study of the QCD medium, especially the quark-gluon plasma. We perform an analytic calculation of the radiative correction to the momentum broadening of high energy quarks and gluons traversing a QCD matter, using a dipole scattering analysis and a slight extension of a formalism developed by B. Zakharov for studying energy loss. We calculate the double and single logarithmic contribution exactly, and find that the radiative correction is a rather large contribution.