Dr
Theodoros Diakonidis
(DESY,Zeuthen)
25/02/2010, 14:00
Methodology of Computations in Theoretical Physics
Parallel Talk
Processes with more than 5 legs are added to experimentalists' wish list for a long time
now. This study is targeted to the NLO qcd corrections of such processes in the LHC.
Many Feynman diagrams are contributing, including those with five- and
six-point functions.
A Fortran code for the numerical calculation of one-loop corrections for the process
$gg\rightarrow t \bar{t}+gg$ is...
Dr
Rikkert Frederix
(University Zurich)
25/02/2010, 14:30
Methodology of Computations in Theoretical Physics
Parallel Talk
There has been made tremendous progress in the automation of one-loop (or virtual) contributions to next-to-leading order (NLO) calculations in QCD, using both the conventional Feynman diagram approach as well as unitarity-based techniques. To have rates and distributions for observables at particle colliders at NLO accuracy also the real emission and subtraction terms have to be included in...
Thomas Hahn
(MPI Munich)
25/02/2010, 15:30
Methodology of Computations in Theoretical Physics
Parallel Talk
The talk describes the recent additions in the automated Feynman diagram computation system FeynArts, FormCalc, and LoopTools
Dr
James Monk
(MCnet/Cedar)
25/02/2010, 16:00
Methodology of Computations in Theoretical Physics
Parallel Talk
Data analyses in hadron collider physics depend on background simulations
performed by Monte Carlo (MC) event generators. However, calculational
limitations and non-perturbative effects require approximate models with
adjustable parameters. In fact, we need to simultaneously tune many
phenomenological parameters in a high-dimensional parameter-space
in order to make the MC generator...
