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A standard file format is proposed to store process and event information, primarily output from parton-level event generators for further use by general-purpose ones. The information content is identical with what was already defined by the Les Houches Accord five years ago, but then in terms of Fortran commonblocks. This information is embedded in a… (More)

We introduce a new color decomposition for multi-parton amplitudes in QCD, free of fundamental-representation matrices and structure constants. This decomposition has a physical interpretation in terms of the flow of color, which makes it ideal for merging with shower Monte-Carlo programs. The color-flow decomposition allows for very efficient evaluation of… (More)

- J. Alwall, S. Höche, F. Krauss, N. Lavesson, L. Lönnblad, F. Maltoni +8 others
- 2007

We compare different procedures for combining fixed-order tree-level matrix-element generators with parton showers. We use the case of W-production at the Tevatron and the LHC to compare different implementations of the so-called CKKW and MLM schemes using different matrix-element generators and different parton cascades. We find that although similar… (More)

We study the signal and background for the process t ¯ th, h → W + W − at the LHC and a 100 TeV VLHC. Signals are studied in two-, three-, and four-lepton final states. We find a statistical uncertainty in the top-quark Yukawa coupling at the LHC of 16%, 8%, 12% for m h = 130, 160, 190 GeV, respectively. The statistical uncertainty at the VLHC is likely to… (More)

Many highly developed Monte Carlo tools for the evaluation of cross sections based on tree matrix elements exist and are used by experimental collaborations in high energy physics. As the evaluation of one-loop matrix elements has recently been undergoing enormous progress, the combination of one-loop matrix elements with existing Monte Carlo tools is on… (More)

- F. del Aguila, J. A. Aguilar–Saavedra, A. Bartl, M. Beccaria, S. Béjar, L. Benucci +62 others
- 2008

This chapter of the report of the " Flavour in ther era of LHC " workshop discusses flavour related issues in the production and decays of heavy states at LHC, both from the experimental side and from the theoretical side. We review top quark physics and discuss flavour aspects of several extensions of the Standard Model, such as supersymmetry, little Higgs… (More)

We calculate the production of a W boson and a single b jet to next-to-leading order in QCD at the Fermilab Tevatron and the CERN Large Hadron Collider. Both exclusive and inclusive cross sections are presented. We separately consider the cross section for jets containing a single b quark and jets containing a b ¯ b pair. There are a wide variety of… (More)

- S. Forte, A. Nisati, G. Passarino, R. Tenchini, C. M. Carloni Calame, M. Chiesa +13 others
- 2015

This review summarizes the results of the activities which have taken place in 2014 within the Standard Model Working Group of the " What Next " Workshop organized by INFN, Italy. We present a framework, general questions , and some indications of possible answers on the main issue for Standard Model physics in the LHC era and in view of possible future… (More)

- S. Alioli, Simon Badger, J. Bellm, Benedikt Biedermann, F. Boudjema, G. Cullen +41 others
- Computer Physics Communications
- 2014

We present an update of the Binoth Les Houches Accord (BLHA) to standardise the interface between Monte Carlo programs and codes providing one-loop matrix elements.

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