A5004781164- 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
- Computational Physics and Python Applications
- Reservoir Engineering and Simulation Methods
- Particle Accelerators and Free-Electron Lasers
- Superconducting Materials and Applications
- Scientific Computing and Data Management
- Dark Matter and Cosmic Phenomena
- Black Holes and Theoretical Physics
- Cosmology and Gravitation Theories
- Advanced Data Storage Technologies
- Radiation Detection and Scintillator Technologies
- Aerodynamics and Acoustics in Jet Flows
- Fluid Dynamics and Turbulent Flows
- Algorithms and Data Compression
- Combustion and flame dynamics
- Simulation Techniques and Applications
- Computational Fluid Dynamics and Aerodynamics
- Particle accelerators and beam dynamics
- Cold Atom Physics and Bose-Einstein Condensates
- Advanced Mathematical Physics Problems
- Gas Dynamics and Kinetic Theory
University of Oxford
2019-2025
New College
2018-2025
Centre for Policy Studies
2022-2025
Clarendon College
2025
Sorbonne Université
2007-2020
Université Paris Cité
2002-2020
Laboratoire de Physique Théorique et Hautes Energies
2009-2020
European Organization for Nuclear Research
2001-2020
Centre National de la Recherche Scientifique
2008-2018
Princeton University
2011-2013
FastJet is a C++ package that provides broad range of jet finding and analysis tools. It includes efficient native implementations all widely used 2-to-1 sequential recombination algorithms for pp e+e- collisions, as well access to 3rd party through plugin mechanism, including currently cone algorithms. also means facilitate the manipulation substructure, some common boosted heavy-object taggers, tools estimation pileup underlying-event noise levels, determination areas subtraction or...
At high-energy colliders, jets of hadrons are the observable counterparts perturbative concepts quarks and gluons. Good procedures for identifying central to experimental analyses comparisons with theory. The Kt family successive recombination jet finders has been widely advocated because its conceptual simplicity flexibility unique ability approximately reconstruct partonic branching sequence in an event. Until now however, it had believed that ensemble N particles algorithmic complexity...
It is widely considered that, for Higgs boson searches at the CERN Large Hadron Colider, WH and ZH production where decays to bb are poor search channels due large backgrounds. We show that high transverse momenta, employing state-of-the-art jet reconstruction decomposition techniques, these processes can be recovered as promising standard model around 120 GeV in mass.
These proceedings discuss a possible new search strategy for light Higgs boson at the LHC, in high‐pt WH and ZH production where decays to single collimated bb̄ jet. Material is included that complementary what was shown original article, arXiv:0802.2470.
We show how generalized energy correlation functions can be used as a powerful probe of jet substructure. These are based on the energies and pair-wise angles particles within jet, with (N+1)-point correlators sensitive to N-prong Unlike many previous substructure methods, these do not require explicit identification subjet regions. In addition, better probes certain soft collinear features that masked by other methods. present three Monte Carlo case studies illustrate utility observables:...
We present the report of hadronic working group BOOST2010 workshop held at University Oxford in June 2010. The first part contains a review potential decays highly boosted particles as an aid for discovery LHC and discussion status tools developed to meet challenge reconstructing isolating these topologies. In second part, we new results comparing performance jet grooming techniques top tagging algorithms on common set benchmark channels. also study sensitivity substructure observables...
At the LHC associated top quark and Higgs boson production with a decay to bottom quarks has long been heavily disputed search channel. Recently, it found not be viable. We show how can observed by tagging massive bosons jets. For this purpose we construct boosted taggers for standard-model processes in complex QCD environment.
A bstract We present first analytic, resummed calculations of the rates at which wide-spread jet substructure tools tag QCD jets. As well as considering trimming, pruning and mass-drop tagger, we introduce modified with improved analytical phenomenological behaviours. Most taggers have double logarithmic structures. The tagger is special in that it involves only single logarithms, free from a complex class terms known non-global logarithms. modification brings an ability to discriminate...
It has become apparent in recent years that it is important, notably for a range of physics studies at the Large Hadron Collider, to have accurate knowledge on distribution photons proton. We show how photon parton function (PDF) can be determined model-independent manner, using electron-proton (ep) scattering data, effect viewing ep→e+X process as an electron off field To this end, we consider imaginary, beyond Standard Model with flavor changing photon-lepton vertex. write its cross...
In this paper, we review recent theoretical progress and the latest experimental results in jet substructure from Tevatron LHC. We status of outlook for calculation simulation tools studying substructure. Following up on report Boost 2010 workshop, present a new set benchmark comparisons techniques, focusing variables grooming methods that are collectively known as 'top taggers'. To facilitate further exploration, have attempted to collect, harmonize publish software implementations these techniques.
We calculate the fully differential next-to-next-to-leading-order (NNLO) corrections to vector-boson fusion (VBF) Higgs boson production at proton colliders, in limit which there is no cross talk between hadronic systems associated with two protons. achieve this using a new "projection-to-Born" method that combines an inclusive NNLO calculation structure-function approach and suitably factorized next-to-leading-order VBF plus three-jet calculation, appropriate two-parton counterevents. An...
HERAFitter is an open-source package that provides a framework for the determination of parton distribution functions (PDFs) proton and many different kinds analyses in Quantum Chromodynamics (QCD). It encodes results from wide range experimental measurements lepton–proton deep inelastic scattering proton–proton (proton–antiproton) collisions at hadron colliders. These are complemented with variety theoretical options calculating PDF-dependent cross section predictions corresponding to...
This report of the BOOST2012 workshop presents results four working groups that studied key aspects jet substructure. We discuss potential first-principle QCD calculations to yield a precise description substructure jets and study accuracy state-of-the-art Monte Carlo tools. Limitations experiments' ability resolve are evaluated, with focus on impact additional (pile-up) proton collisions performance in future LHC operating scenarios. A final section summarizes lessons learnt from analyses...
A bstract Lund diagrams, a theoretical representation of the phase space within jets, have long been used in discussing parton showers and resummations. We point out that they can be created for individual jets through repeated Cambridge/Aachen declustering, providing powerful visual radiation any given jet. Concentrating here on primary plane, we outline some its analytical properties, highlight scope constraining Monte Carlo simulations comment relation with existing observables such as z...
Parton showers are among the most widely used tools in collider physics. Despite their key importance, none so far have been able to demonstrate accuracy beyond a basic level known as leading logarithmic order, with ensuing limitations across broad spectrum of physics applications. In this Letter, we propose criteria for be considered next-to-leading accurate. We then introduce new classes shower, final-state radiation, that satisfy main elements these large-N_{C} limit. As proof concept,...
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...
We report on a major milestone in the construction of logarithmically accurate final-state parton showers, achieving next-to-next-to-leading-logarithmic (NNLL) accuracy for wide class observables known as event shapes. The key to this advance lies identification relation between critical NNLL analytic resummation ingredients and their parton-shower counterparts. Our discussion is supplemented with numerical tests logarithmic three shower variants more than dozen distinct event-shape <a:math...