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We present a novel event generation framework for the efficient simulation of vector boson plus multi-jet backgrounds at the high-luminosity LHC and at possible future hadron colliders. MPI parallelization of parton-level and particle-level…

High Energy Physics - Phenomenology · Physics 2019-07-31 Stefan Höche , Stefan Prestel , Holger Schulz

We compute the cross section and differential distributions for the production of a Standard Model Higgs boson in association with a hadronic jet to next-to-next-to-leading order in quantum chromodynamics (QCD). In Higgs boson studies at…

High Energy Physics - Phenomenology · Physics 2015-06-22 X. Chen , T. Gehrmann , E. W. N. Glover , M. Jaquier

We present an algorithm to evaluate the exact, tree-level matrix elements for multi-parton processes in QCD. We tested this technique, based on the recursive evaluation of the S-matrix, on processes such as gg -> n gluons and q qbar -> n…

High Energy Physics - Phenomenology · Physics 2009-07-09 F. Caravaglios , M. L. Mangano , M. Moretti , R. Pittau

The abundant amount of data to be collected by the ATLAS and CMS collaborations in future runs of the Large Hadron Collider at CERN opens up a new era of precision physics. Some of the most prominent precision observables are related to…

High Energy Physics - Phenomenology · Physics 2021-12-24 João Pires

Comparisons of higher-order predictions within the Standard Model of Particle Physics (SM) to data are central to high-energy collider experiments like the Large Hadron Collider (LHC). Processes with multiple kinematic scales, such as…

High Energy Physics - Phenomenology · Physics 2024-05-03 Rene Poncelet

The advent of high-energy hadron colliders necessitates efficient and accurate computation of multi-jet production processes, both as QCD processes in their own right and as backgrounds for other physics. The algorithm that performs these…

High Energy Physics - Phenomenology · Physics 2011-09-13 Petros D. Draggiotis , Ronald H. P. Kleiss , Costas G. Papadopoulos

A novel method is proposed here to precisely model the multi-dimensional features of QCD multi-jet events in hadron collisions. The method relies on the schematization of high-pT QCD processes as 2->2 reactions made complex by sub-leading…

High Energy Physics - Experiment · Physics 2017-12-08 P. De Castro Manzano , M. Dall'Osso , T. Dorigo , L. Finos , G. Kotkowski , G. Menardi , B. Scarpa

We present a calculation of pseudoscalar Higgs production in association with a jet at Next-to-Next-to Leading Order (NNLO) accuracy in QCD. We work in an effective field theory in which $m_t \rightarrow \infty$ resulting in effective…

High Energy Physics - Phenomenology · Physics 2024-05-06 Youngjin Kim , Ciaran Williams

Physics beyond the Standard Model (BSM) may be unveiled by studying events with a high number of outgoing jets, produced at the LHC with energies above the TeV scale (energetic multi-jet events). Such events are dominated by QCD processes,…

High Energy Physics - Phenomenology · Physics 2021-02-03 Daniel Turgeman , Michael Pitt , Itamar Roth , Ehud Duchovni

We present a next-to-leading order QCD calculation for the single-inclusive production of collimated jets at hadron colliders, when the jet is defined by maximizing a suitable jet function that depends on the momenta of final-state…

High Energy Physics - Phenomenology · Physics 2015-03-05 Tom Kaufmann , Asmita Mukherjee , Werner Vogelsang

Final states with a vector boson and a hadronic jet allow one to infer the Born-level kinematics of the underlying hard scattering process, thereby probing the partonic structure of the colliding protons. At forward rapidities, the parton…

High Energy Physics - Phenomenology · Physics 2019-06-26 A. Gehrmann-De Ridder , T. Gehrmann , E. W. N. Glover , A. Huss , D. M. Walker

In this talk we discuss the implementation of the full next-to-leading order QCD corrections to electroweak Higgs boson plus three jet production at the LHC within the Matchbox framework of the Herwig++ event generator. We also present…

High Energy Physics - Phenomenology · Physics 2014-07-29 Francisco Campanario , Terrance M. Figy , Simon Plätzer , Malin Sjodahl

We review recent results in precision multiboson+jet phenomenology at the LHC. We discuss strategies how to compute these processes at NLO QCD and examine the impact of the perturbative corrections on the expected phenomenology, especially…

High Energy Physics - Phenomenology · Physics 2011-12-30 Francisco Campanario , Christoph Englert , Michael Rauch , Michael Spannowsky , Dieter Zeppenfeld

The implementation of the full next-to-leading order (NLO) QCD corrections to electroweak Higgs boson plus three jet production at hadron colliders such as the LHC within the Matchbox NLO framework of the Herwig++ event generator is…

High Energy Physics - Phenomenology · Physics 2013-11-22 Francisco Campanario , Terrance M. Figy , Simon Plätzer , Malin Sjödahl

Several important processes and analyses at the LHC are sensitive to higher-order perturbative corrections beyond what can currently be calculated at fixed order. One important class of logarithmic corrections are those which appear when…

High Energy Physics - Phenomenology · Physics 2022-02-04 Emmet P. Byrne

Achieving a precise description of multi-parton final states is crucial for many analyses at LHC. In this contribution we review the main features of the HELAC-NLO system for NLO QCD calculations. As a case study, NLO QCD corrections for tt…

High Energy Physics - Phenomenology · Physics 2010-12-13 G. Bevilacqua , M. Czakon , M. V. Garzelli , A. van Hameren , Y. Malamos , C. G. Papadopoulos , R. Pittau , M. Worek

We describe a general method of calculating the fully differential cross section for the production of jets at next-to-leading order in a hadron collider. This method is based on a `crossing' of next-to-leading order calculations with all…

High Energy Physics - Phenomenology · Physics 2008-11-26 Walter T. Giele , E. W. Nigel Glover , David A. Kosower

We present precise predictions for Higgs boson production in association with a jet. Our calculation is accurate to next-to-next-to-leading order (NNLO) QCD in the Higgs Effective Field Theory and constitutes the first complete NNLO…

High Energy Physics - Phenomenology · Physics 2015-08-26 Radja Boughezal , Fabrizio Caola , Kirill Melnikov , Frank Petriello , Markus Schulze

At the Large Hadron Collider (LHC), the most abundant processes which take place in proton-proton collisions are the generation of multijet events. These final states rely heavily on phenomenological models and perturbative corrections…

High Energy Physics - Experiment · Physics 2019-01-25 Stefan von Buddenbrock

The rapid deployment of computing hardware different from the traditional CPU+RAM model in data centers around the world mandates a change in the design of event generators for the Large Hadron Collider, in order to provide economically and…

High Energy Physics - Phenomenology · Physics 2024-09-18 Enrico Bothmann , Taylor Childers , Walter Giele , Stefan Höche , Joshua Isaacson , Max Knobbe
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