A5036802529- Particle physics theoretical and experimental studies
- High-Energy Particle Collisions Research
- Quantum Chromodynamics and Particle Interactions
- Particle Detector Development and Performance
- Distributed and Parallel Computing Systems
- Superconducting Materials and Applications
- Particle Accelerators and Free-Electron Lasers
- Optimal Experimental Design Methods
- Scientific Computing and Data Management
- Electromagnetic Scattering and Analysis
- Advanced Data Storage Technologies
- Agricultural Innovations and Practices
- Computational Physics and Python Applications
- Drug Solubulity and Delivery Systems
- Mathematical Approximation and Integration
- Black Holes and Theoretical Physics
- Dark Matter and Cosmic Phenomena
- Online and Blended Learning
- Advanced Statistical Methods and Models
- Interconnection Networks and Systems
- Cosmology and Gravitation Theories
- Hops Chemistry and Applications
- Innovative Teaching and Learning Methods
- Parallel Computing and Optimization Techniques
- Product Development and Customization
Durham University
2021-2025
European Organization for Nuclear Research
1996-2021
University of Hong Kong
2021
Max Planck Society
2019
Max Planck Institute for Physics
2015-2019
Paul Scherrer Institute
2019
University of Zurich
2016-2019
Iowa State University
1985-2018
Michigan State University
2018
UCLouvain
2018
The discovery of the Higgs boson in 2012, by ATLAS and CMS experiments, was a success achieved with only percent entire dataset foreseen for LHC. It opened landscape possibilities study properties, Electroweak Symmetry breaking Standard Model general, as well new avenues probing physics beyond Model. Six years after discovery, conspicuously larger collected during LHC Run 2 at 13 TeV centre-of-mass energy, theory experimental particle communities have started meticulous exploration potential...
We present the calculation of cross section and invariant mass distribution for Higgs boson pair production in gluon fusion at next-to-leading order (NLO) QCD. Top-quark masses are fully taken into account throughout calculation. The virtual two-loop amplitude has been generated using an extension program GoSam supplemented with interface to Reduze integral reduction. occurring integrals have calculated numerically SecDec. Our results, including full top-quark dependence first time, allow us...
First-principle simulations are at the heart of high-energy physics research program. They link vast data output multi-purpose detectors with fundamental theory predictions and interpretation. This review illustrates a wide range applications modern machine learning to event generation simulation-based inference, including conceptional developments driven by specific requirements particle physics. New ideas tools developed interface will improve speed precision forward simulations, handle...
This report presents a short summary of the activities "Standard Model" working group for "Physics at TeV Colliders" workshop (Les Houches, France, 12-30 June, 2023).
We provide an overview of the status Monte-Carlo event generators for high-energy particle physics. Guided by experimental needs and requirements, we highlight areas active development, opportunities future improvements. Particular emphasis is given to physics models algorithms that are employed across a variety experiments. These common themes in generator development lead more comprehensive understanding at highest energies intensities, allow be tested against wealth data have been...
Inclusive Higgs boson production at large transverse momentum is induced by different channels. We focus on the leading through gluon fusion, and perform a consistent combination of state art calculations obtained in infinite-top-mass effective theory next-to-next-to-leading order (NNLO) full Standard Model (SM) next-to-leading (NLO). thus present approximate QCD predictions for this process NNLO, study corresponding perturbative uncertainties. This calculation then compared with those...
Genichi Taguchi has emphasized the use of designed experiments in several novel and important applications. In this paper we focus on statistical experimental designs designingproducts to be robust environmental conditions. The engineering concept product design is very because it frequently impossible or prohibitively expensive control eliminate variation resulting from Robust enablesthe experimenter discover how modify minimize effect dueto sources. kind, Taguchi's total arrangement...
We study the effects of exact top quark mass-dependent two-loop corrections to Higgs boson pair production by gluon fusion at LHC and a 100 TeV hadron collider. perform detailed comparison full next-to-leading order result various approximations level differential distributions also analyse non-standard self-coupling scenarios. find that different differ from up 50 percent in relevant distributions. This clearly stresses importance NLO result.
We present the next-to-leading order QCD corrections to production of a Higgs boson in association with one jet at LHC including full top-quark mass dependence. The bottom quark is neglected. two-loop integrals appearing virtual contribution are calculated numerically using method Sector Decomposition. study transverse momentum distribution, focusing on high $p_{t,\mathrm{H}}$ region, where loop resolved. find that large but ratio leading result similar obtained by computing limit mass.
The purely numerical evaluation of multi-loop integrals and amplitudes can be a viable alternative to analytic approaches, in particular the presence several mass scales, provided sufficient accuracy achieved an acceptable amount time. For many integrals, fraction time required perform integration is significant it therefore beneficial have efficient well-implemented methods. With this goal mind, we present new stand-alone integrator based on use (quasi-Monte Carlo) rank-1 shifted lattice...
We present the first combination of NLO QCD matrix elements for di-Higgs production, retaining full top quark mass dependence, with a parton shower. Results are provided within both POWHEG-BOX and MadGraph5_aMC@NLO Monte Carlo frameworks. assess in detail theoretical uncertainties provide differential results. find that, as expected, shower effects relatively large observables like transverse momentum Higgs boson pair, which sensitive to extra radiation. However, these still much smaller...
A bstract We consider QCD radiative corrections to Higgs boson pair production through gluon fusion in proton collisions. combine the exact next-to-leading order (NLO) contribution, which features two-loop virtual amplitudes with full dependence on top quark mass M t , next-to-next-to-leading (NNLO) computed large- approximation. The latter are improved different reweighting techniques account for finite- effects beyond NLO. Our reference NNLO result is obtained by combining one-loop...
We provide an overview of the status Monte-Carlo event generators for high-energy particle physics. Guided by experimental needs and requirements, we highlight areas active development, opportunities future improvements. Particular emphasis is given to physics models algorithms that are employed across a variety experiments. These common themes in generator development lead more comprehensive understanding at highest energies intensities, allow be tested against wealth data have been...
Numerical evaluations of Feynman integrals often proceed via a deformation the integration contour into complex plane. While valid contours are easy to construct, numerical precision for multi-loop integral can depend critically on chosen contour. We present methods optimize this using combination optimized, global shifts and normalizing flow. They lead significant gain in precision.
Les Houches activities in 2021 were truncated due to the lack of an in-person component. However, given rapid progress field, and restart LHC, we wanted continue bi-yearly tradition updating standard model precision wishlist. If nothing else, this will keep us from having even more work do at 2023.
Professor Genichi Taguchi has emphasized the use of designed experiments in several novel and important applications. In this paper, we focus on statistical experimental designs designing products to be robust environmental conditions. The engineering concept product design is very since it frequently impossible or prohibitively expensive control eliminate sources variation due Robust enables experimenter discover how modify minimize effect from sources. kind, Taguchi's total arrangement...
We study exclusive vector meson photoproduction, with or ϒ, at next-to-leading order (NLO) in collinear factorisation, to examine what may be learnt about the gluon distribution very low x. factorisation scale dependence of predictions. argue that, using knowledge NLO corrections, terms enhanced by a large can reabsorbed LO part choice scale. (In these processes ξ takes role Bjorken-x.) Then, coming from remaining contributions has no enhancements. As result, we find that predictions for...