Speaker
Arindam Bhattacharya
(Harvard University)
Description
Glauber modes associated with fermion exchange lead to large logarithmic enhancements in backward scattering processes in QED and QCD. We discuss the full one-loop matching of backward scattering limit of QCD to SCET augmented with Glauber quark operators, and demonstrate that no one-loop Wilson coefficients are needed, thereby providing an analogous result to earlier work on Glauber gluons. While power-suppressed relative to Glauber gluons, we demonstrate that Glauber quarks have an abelian nature and are responsible for large and novel enhancements in total cross sections in QED.
Primary author
Arindam Bhattacharya
(Harvard University)
