Conveners
WG 1 - Precision: Session 1
- Adrian Irles (IFIC CSIC/UV)
WG 1 - Precision: Session 2
- Paolo Azzurri
Description
Physics potential: precision
One of the challenges for future e+e- colliders is adequate control of
the center-of-mass energy, and the associated luminosity spectrum.
For linear colliders at all energies and for circular colliders
at center-of-mass energies above 200 GeV one can not rely on resonant
beam depolarization and must use collision data driven methods.
The contribution will focus on progress related to...
In this talk three-loop QCD corrections to heavy quark form factors
are presented. They constitute the virtual corrections for various
processes as, e.g., top quark production in $e^+ e^-$ annihilation or
Higgs decay into heavy quarks. A semi-numerical method is discussed,
which is based on expansions around singular and regular kinematical
points. They are matched at intermediate values...
Jet substructure is an important tool in analyses at the currently running LHC
experiments. These observables, and likewise related event shapes, can be
expected to play an important role at future colliders, both in the study of QCD
effects as well as in the tagging of jet properties to identify signal enhanced
phase space regions in various analyses. In this talk I will present...
I will present recent developments on accurate (QCD) parton showers at the NLL level and I will outline new approaches based on amplitude level evolution which have led to improved algorithms, links to hadronization models, and touch further aspects such as electroweak evolution.
Photo-production is a non-negligible contribution to cross-sections at lepton—proton and lepton—lepton colliders, amounting to in fact over half of the QCD cross section. In this talk I will discuss the framework in the Sherpa event generator that allows the calculations of both unresolved and resolved photon contributions. I will show comparisons of simulated events at MC@NLO accuracy with...
