NT/RIKEN Seminar

"Solving the medium-induced gluon radiation spectrum for an arbitrary number of scatterings"

Presented by Carlota Andres Casas

Friday, February 14, 2020, 2:00 pm — Building 510, CFNS Seminar Room 2-38

New measurements of jet quenching observables at RHIC and at the LHC, such as jet substructure observables, demand an increased precision in the theory calculations describing medium-induced radiation of gluons. Closed expressions for the gluon spectrum including an arbitrary number of multiple scatterings have been known for the past 20 years, but analytical calculations have failed to evaluate this spectrum using realistic models for parton-medium interactions. We show a flexible method which allows us to write the analytical expressions for the full in-medium spectrum, including the resummation of all multiple scatterings, in a form where the numerical evaluation can be easily performed without the need of the usually employed harmonic or first opacity approximation. We present the transverse momentum and energy-dependent medium-induced gluon emission distributions for known realistic interaction models to illustrate how our framework can be applied beyond the limited kinematic regions of previous calculations.

Hosted by: Nikhil Karthik

15442  |  INT/EXT  |  Events Calendar