Publications (28)
Stable One-Dimensional Integral Representations of One-Loop N-Point Functions in the General Massive Case: I - Three Point Functions
J. Ph. Guillet, E. Pilon, M. Rodgers +1
In this article we provide representations for the one-loop three point functions in 4 and 6 dimensions in the general case with complex masses. The latter are part of the GOLEM li…
A full Next to Leading Order study of direct photon pair production in hadronic collisions
T. Binoth, J. Ph. Guillet, E. Pilon +1
We discuss the production of photon pairs in hadronic collisions, from fixed target to LHC energies. The study which follows is based on a QCD calculation at full next-to-leading o…
The QCD/SM Working Group: Summary Report
S. Alekhin, C. Balazs, R. Ball +57
This Report documents the results obtained by the Working Group on Quantum ChromoDynamics and the Standard Model for the Workshop ``Physics at TeV Colliders'', Les Houches, France,…
The SM and NLO Multileg and SM MC Working Groups: Summary Report
J. Alcaraz Maestre, S. Alioli, J. R. Andersen +79
The 2011 Les Houches workshop was the first to confront LHC data. In the two years since the previous workshop there have been significant advances in both soft and hard QCD, parti…
Photon - Jet Correlations and Constraints on Fragmentation Functions
Z. Belghobsi, M. Fontannaz, J. -Ph. Guillet +3
We study the production of a large-pT photon in association with a jet in proton-proton collisions. We examine the sensitivity of the jet rapidity distribution to the gluon distrib…
The QCD and Standard Model Working Group: Summary Report from Les Houches
P. Aurenche, C. Balazs, R. D. Ball +27
The Les Houches Workshop on Physics at TeV Colliders took place from June 8-18, 1999. One of the three working groups at Les Houches concentrated on QCD issues, both at the Tevatro…
The SM and NLO multileg working group: Summary report
T. Binoth, G. Dissertori, J. Huston +88
This report summarizes the activities of the SM and NLO Multileg Working Group of the Workshop "Physics at TeV Colliders", Les Houches, France 8-26 June, 2009.
Cross section of isolated prompt photons in hadron-hadron collisions
S. Catani, M. Fontannaz, J. Ph. Guillet +1
We consider the production of isolated prompt photons in hadronic collisions. We present a general discussion in QCD perturbation theory of the isolation criterion used by hadron c…
Higher dimensional abelian Chern-Simons theories and their link invariants
L. Gallot, E. Pilon, F. Thuillier
The role played by Deligne-Beilinson cohomology in establishing the relation between Chern-Simons theory and link invariants in dimensions higher than three is investigated. Delign…
A critical phenomenological study of inclusive photon production in hadronic collisions
P. Aurenche, M. Fontannaz, J. Ph. Guillet +3
We discuss fixed target and ISR inclusive photon production and attempt a comparison between theory and experiments. The dependence of the theoretical predictions on the structure…
Les Houches Physics at TeV Colliders 2005, Standard Model and Higgs working group: Summary report
C. Buttar, S. Dittmaier, V. Drollinger +118
This Report summarises the activities of the "SM and Higgs" working group for the Workshop "Physics at TeV Colliders", Les Houches, France, 2-20 May, 2005. On the one hand, we perf…
A next-to-leading order study of pion-pair production and comparison with E706 data
T. Binoth, J. P. Guillet, E. Pilon +1
We discuss the production of pion pairs with a large invariant mass in hadronic collisions. We present a study based on a perturbative QCD calculation at full next-to-leading order…
Golem95C: A library for one-loop integrals with complex masses
G. Cullen, J. -Ph. Guillet, G. Heinrich +4
We present a program for the numerical evaluation of scalar integrals and tensor form factors entering the calculation of one-loop amplitudes which supports the use of complex mass…
Golem95: a numerical program to calculate one-loop tensor integrals with up to six external legs
T. Binoth, J. -Ph. Guillet, G. Heinrich +2
We present a program for the numerical evaluation of form factors entering the calculation of one-loop amplitudes with up to six external legs. The program is written in Fortran95…
Beyond leading order effects in photon pair production at the Tevatron
T. Binoth, J. Ph. Guillet, E. Pilon +1
We discuss effects induced by beyond leading order contributions to photon pair production. We point out that next to leading order contributions to the fragmentation component of…
A novel approach to the computation of one-loop three- and four-point functions. III - The infrared divergent case
J. Ph. Guillet, E. Pilon, Y. Shimizu +1
This article is the third and last of a series presenting an alternative method to compute the one-loop scalar integrals. It extends the results of first two articles to the infrar…
A next-to-leading order study of photon-pion and pion pair hadro-production in the light of the Higgs boson search at the LHC
T. Binoth, J. P. Guillet, E. Pilon +1
We discuss the production of photon-pion and pion pairs with a large invariant mass at collider energies. We present a study based on a perturbative QCD calculation at full next-to…
Is factorization for isolated photon cross sections broken?
P. Aurenche, M. Fontannaz, J. Ph. Guillet +2
Recently the factorization property has been claimed to be broken in the cross section for the production of isolated prompt photons emitted in the final state of hadronic $e^ + e^…
QCD
S. Catani, M. Dittmar, D. Soper +61
We discuss issues of QCD at the LHC including parton distributions, Monte Carlo event generators, the available next-to-leading order calculations, resummation, photon production,…
An algebraic/numerical formalism for one-loop multi-leg amplitudes
T. Binoth, J. Ph. Guillet, G. Heinrich +2
We present a formalism for the calculation of multi-particle one-loop amplitudes, valid for an arbitrary number N of external legs, and for massive as well as massless particles. A…
Factorization and soft-gluon divergences in isolated-photon cross sections
S. Catani, M. Fontannaz, E. Pilon
We study the production of isolated photons in annihilation and give the proof of the all-order factorization of the collinear singularities. These singularities are absor…
A novel approach to the computation of one-loop three- and four-point functions. I -- The real mass case
J. Ph. Guillet, E. Pilon, Y. Shimizu +1
This article is the first of a series of three presenting an alternative method to compute the one-loop scalar integrals. This novel method enjoys a couple of interesting features…
The NLO multileg working group: summary report
Z. Bern, S. Dittmaier, L. Dixon +44
This report summarizes the activities of the NLM working group of the Workshop "Physics at TeV Colliders", Les Houches, France, 11-29 June, 2007.
A novel approach to the computation of one-loop three- and four-point functions. II - The complex mass case
J. Ph. Guillet, E. Pilon, Y. Shimizu +1
This article is the second of a series of three presenting an alternative method to compute the one-loop scalar integrals. It extends the results of the first article to general co…
Framework for a novel mixed analytical/numerical approach for the computation of two-loop -point Feynman diagrams
J. Ph. Guillet, E. Pilon, Y. Shimizu +1
A framework to represent and compute two-loop -point Feynman diagrams as double-integrals is discussed. The integrands are 'generalised one-loop type" multi-point functions mult…
The heavy fermion damping rate puzzle
S. Peigne, E. Pilon, D. Schiff
: We examine again the problem of the damping rate of a moving heavy fermion in a hot plasma within the resummed perturbative theory of Pisarski and Braaten. The ansatz for its eva…
Two-loop scalar functions with internal lines,
J. Ph. Guillet, E. Pilon, Y. Shimizu +1
This article displays a proof of concept of the mixed analytical/numerical method, presented in previous publications, to compute two-loop functions with up to five massive propaga…
Handbook of LHC Higgs Cross Sections: 2. Differential Distributions
LHC Higgs Cross Section Working Group, S. Dittmaier, C. Mariotti +118
This Report summarises the results of the second year's activities of the LHC Higgs Cross Section Working Group. The main goal of the working group was to present the state of the…