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ACAT 2010

22–27 Feb 2010
Jaipur, India
Europe/Zurich timezone

Session

Thursday, 25 February - Methodology of Computations in Theoretical Physics

25 Feb 2010, 14:00
Jaipur, India

Jaipur, India

Jaipur, India

Presentation materials

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  1. 68. Calculating one loop multileg processes. A program for the case of $gg\rightarrow t \bar{t}+gg$
    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...
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  2. 145. The automation of subtraction schemes for next-to-leading order calculations in QCD
    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...
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  3. 97. The FeynSystem: FeynArts, FormCalc, LoopTools
    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
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  4. 146. New developments in event generator tuning techniques
    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...
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