Top-mass measurements: renormalons and NLO+PS effects

Particle Physics Theory seminar

Top-mass measurements: renormalons and NLO+PS effects

  • Event time: 2:00pm
  • Event date: 4th September 2019
  • Speaker: Silvia Ferrario-Ravasio (Durham University - IPPP)
  • Location: Higgs Centre Seminar Room, Room 4305,

Event details

In this talk I will present some theoretical subtleties of the
top-quark mass determination, issue which persists in being highly
controversial.  In the first part, I will discuss the presence of
linear renormalons in observables that can be used to determine the
top mass.  The second part of the talk is instead devoted to the
comparison of several NLO generators for top-pair production,
implemented in the POWHEG BOX framework, that differ by the level of
accuracy employed to describe the top decay. The impact of the shower
Monte Carlo programs that can complete the NLO events generated by
POWHEG BOX, Pythia 8.2 and Herwig 7.1, is also studied.

About Particle Physics Theory seminars

The Particle Physics Theory seminar is a weekly series of talks reflecting the diverse interests of the group. Topics include analytic and numerical calculations based on the Standard Model of elementary particle physics, theories exploring new physics, as well as more formal developments in gauge theories and gravity..

Find out more about Particle Physics Theory seminars.