Giulia Zanderighi
(CERN)
06/09/2006, 11:00
Giampiero Passarino
(Torino)
06/09/2006, 11:25
Even disregarding the intrinsic necessity of some new
algorithm for numerical evaluation of one-loop diagrams, and
even in case it has no intrinsic necessity at all, a
probable decision about its goodness is possible inductively
by studying its success. Success here means fruitfulness in
consequences, in particular in verifiable consequences,
i.e., consequences demonstrable without the...
Ansgar Denner
(PSI Zurich)
06/09/2006, 11:50
The decay of the Standard Model Higgs boson into four
fermions via a virtual W-boson or Z-boson pair is one of the
most important
decay modes in the Higgs-boson search at the LHC. We present
a calculation of the first order radiative corrections to
these processes, including higher order improvements. The
intermediate W- and Z-boson resonances are consistently
described using the...
Stefan Weinzierl
(Mainz)
06/09/2006, 14:25
I will discuss various technical aspects related to automated
QCD calculations at NLO:
- the recursive calculation of amplitudes,
- the organization of the colour structures,
- the automated generation of subtraction terms,
- the numerical tensor reduction of loop integrals.
William Kilgore
(Brookhaven)
06/09/2006, 16:00
I describe a parton-level Monte Carlo calculation of Drell-Yan
production at next-to-next-to-leading order. The calculation is
performed with a subtraction scheme in which the subtraction term is
the squared matrix element itself.
Carlo Oleari
(Bicocca, Milano)
06/09/2006, 18:00
Guenther Dissertori
(ETH Zurich)
07/09/2006, 09:00
After a very brief report on the status of the LHC preparations
(machine and detectors) I will try to summarize the current
understanding of how well specific hard scattering processes
can be measured at the LHC, and what the relevance of these
measurements is. Examples are the Drell-Yan process,
top production, W/Z + jet as well as inclusive jet production.
Giuseppe Marchesini
(Bicocca, Milano)
07/09/2006, 11:25
Stefan Dittmaier
(MPI, Munich)
07/09/2006, 14:00
In the calculation of NLO corrections to multi-leg processes serious numerical
problems arise in the commonly used Passarino-Veltman reduction of tensor to
scalar integrals in exceptional phase-space configurations.
In this talk two alternative methods are discussed solving this problem.
One of the methods relies on a seminumerical approach, in which a specific
tensor coefficient is...
Costas Papadopoulos
(Demokritos Athens)
07/09/2006, 14:50
Daniel de Florian
(Buenos Aires)
07/09/2006, 16:00
We perform the all-order resummation of large logarithmic(NLL)
QCD corrections for the process pp ->H+ X when the Higgs boson H is
produced at high transverse momentum.
Thomas Binoth
(Edinburgh)
07/09/2006, 16:25
In this talk I review the status of our GOLEM project. The acronym stands
for "General One-Loop Evaluator of Matrix-elements". This tool is designed
to allow for an efficient and numerically stable evaluation of multi-particle
one-loop amplitudes which are needed for the precise description of
numerous processes relevant for the upcoming LHC. First applications are presented.
Massimiliano Grazzini
(INFN, Firenze)
07/09/2006, 17:10
Tilman Plehn
(Edinburgh)
07/09/2006, 17:35
Madgraph and Madevent are a well established tool to evaluate tree-level
amplitudes and create unweighted events for processes with a large number
of external particles at the LHC. For the Madgraph collaboration I review
the status, some physics complications and recent calculations of
Madgraph/Madevent for physics beyond the Standard Model.
Walter Giele
(Fermilab)
08/09/2006, 09:40
Stefano Catani
(INFN, Firenze)
08/09/2006, 10:05
Nigel Glover
(Durham)
08/09/2006, 11:00
We discuss how the twistor inspired methods can be used to derive compact
expressions for multi-parton amplitudes involving Higgs bosons (in the
limit that the top quark mass is heavy producing an effective Higgs-gluon
interaction).
Darren Forde
(Saclay)
08/09/2006, 14:00
I will discuss the construction of amplitudes at one-loop in QCD using
the unitarity bootstrap approach. I will detail the techniques needed to
build the rational contributions to these amplitudes as well as
highlighting not only their application to fixed-multiplicity amplitudes
but also to all-multiplicity amplitudes.
Alexander Mitov
(DESY Zeuthen)
08/09/2006, 14:50
Vittorio del Duca
(INFN, Torino)
08/09/2006, 15:35
David Dunbar
(Swansea)
08/09/2006, 16:25
The recent progress for calculating gauge theory amplitudes may
also be applied to gravity calculations. We find surprising
similarities between the perturbative expansions of maximally
supersymmetric Yang-Mills and gravity theories. We discuss possible
implications of these results for the UV behaviour of supergravity in D=4.
