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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…

高能物理 - 唯象学 · 物理学 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…

高能物理 - 唯象学 · 物理学 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…

高能物理 - 唯象学 · 物理学 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…

高能物理 - 唯象学 · 物理学 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…

高能物理 - 唯象学 · 物理学 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…

高能物理 - 唯象学 · 物理学 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…

高能物理 - 实验 · 物理学 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…

高能物理 - 唯象学 · 物理学 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,…

高能物理 - 唯象学 · 物理学 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…

高能物理 - 唯象学 · 物理学 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…

高能物理 - 唯象学 · 物理学 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…

高能物理 - 唯象学 · 物理学 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…

高能物理 - 唯象学 · 物理学 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…

高能物理 - 唯象学 · 物理学 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…

高能物理 - 唯象学 · 物理学 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…

高能物理 - 唯象学 · 物理学 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…

高能物理 - 唯象学 · 物理学 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…

高能物理 - 唯象学 · 物理学 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…

高能物理 - 实验 · 物理学 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…

高能物理 - 唯象学 · 物理学 2024-09-18 Enrico Bothmann , Taylor Childers , Walter Giele , Stefan Höche , Joshua Isaacson , Max Knobbe
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