Speaker
Description
We study the angle between i) the standard jet axis, ii) the axis of a jet
which has been groomed using soft drop, with reduced sensitivity to soft radiation, iii) the
jet axis obtained with the winner-take-all recombination scheme, which is insensitive to
soft radiation at leading power. We calculate the distributions for these angles at next-to-leading logarithmic accuracy, including non-global logarithms. The angle between the
standard and groomed jet axis directly probes soft wide-angle radiation, leading to a novel
factorization formula. This angle is also very sensitive to nonperturbative physics, which is
directly connected to nonperturbative contribution to the rapidity anomalous dimension for
transverse momentum distributions. Comparing our predictions to Pythia we find good
agreement, and we foresee applications to jet substructure in proton-proton and heavy ion collisions. In addition, the new observables are ideally suited for low energy jets at the future Electron-Ion Collider as hadronization corrections are well understood.
