Speaker: Vicent Mateu (MPI)

Schedule: 08-07-2009 a  las 14.30, aula 8A


Title:

"Global Fit for Thrust at N3LL with Power Corrections: Precision Determination of alphas(mZ)"

Abstract:

"We present a global analysis of the thrust distribution in e+ e- to jets.
The theory divides itself into three regions: peak region, tail region,
and far tail region. Using the soft-collinear efective theory we present
a formalism that allows us to consistently and simultaneously treat all
three regions. We include the 3-loop fixed order results, a resummation
with NNNLL accuracy, and non-perturbative corrections. Our global
fit to the data incorporates a complete basis to model the soft function,
and a non-perturbative running gap to ensure stability of this model
to perturbative corrections; features that go beyond the capabilities of
current Monte Carlo generators."