Event calendar file
13-16 September 2023
University of Warsaw, Faculty of Physics
Europe/Warsaw timezone
Thermal regularization of t-channel singularities of scattering processes
Presented by Mr. Michał IGLICKI
on
15 Sep 2023
from
16:30
to
16:45
Session:
Parallel Session 5
Content
In this talk, I will discuss the so-called t-channel singularities that may occur when a given t-channel scattering process is mediated by a massive, stable particle on its mass shell.
After providing conditions for the singularity to occur and presenting several examples of SM and BSM processes afflicted by the issue, I will describe a regularization method based on thermal field theory.
Taking into account interactions between the t-channel mediator and the surrounding gas of particles allows to assign an effective decay width to the mediator. Consequently, the singularity can be regularized using a resummed propagator.
Place
Location: University of Warsaw, Faculty of Physics
Address: Pasteura 5 Street, 02-093 Warsaw, Poland
Room: 0.03a
