A5060266051- Particle physics theoretical and experimental studies
- Quantum Chromodynamics and Particle Interactions
- High-Energy Particle Collisions Research
- Dark Matter and Cosmic Phenomena
- Cosmology and Gravitation Theories
- Distributed and Parallel Computing Systems
- Particle Accelerators and Free-Electron Lasers
- Black Holes and Theoretical Physics
- Particle Detector Development and Performance
- Astrophysics and Cosmic Phenomena
- Computational Physics and Python Applications
- Superconducting Materials and Applications
- Neutrino Physics Research
- Scientific Research and Discoveries
- Magnetic confinement fusion research
- Scientific Computing and Data Management
- Advanced Electrical Measurement Techniques
- Atomic and Subatomic Physics Research
- Parallel Computing and Optimization Techniques
- Simulation Techniques and Applications
- Geophysical and Geoelectrical Methods
- Matrix Theory and Algorithms
- Advanced NMR Techniques and Applications
- Advancements in Photolithography Techniques
- Cryospheric studies and observations
UCLouvain
2011-2024
Durham University
2014-2022
Universidade Estadual Paulista (Unesp)
2019
Sorbonne Université
2018
Laboratoire de Physique Théorique et Hautes Energies
2018
Laboratoire de Physique Subatomique et de Cosmologie
2018
Université Grenoble Alpes
2018
Institut National de Physique Nucléaire et de Physique des Particules
2018
Centre National de la Recherche Scientifique
2018
University of Sussex
2018
We present the automation of one-loop computations in standard-model effective field theory at dimension six. Our general implementation, dubbed SMEFT@NLO, covers all types operators: bosonic, two- and four-fermion ones. Included ultraviolet rational counterterms presently allow for fully differential predictions, possibly matched to parton shower, up level strong coupling or four-quark operator coefficients. Exact flavor symmetries are imposed among light quark generations an initial focus...
Abstract We present an update of the Universal FeynRules Output model format, commonly known as UFO that is used by several automated matrix-element generators and high-energy physics software. detail different features have been proposed extensions initial format during last ten years, collect them in current second version we coin Feynman format. Following philosophy UFO, they consist flexible modular additions to address particle decays, custom propagators, form factors, renormalisation...
We describe a framework to develop, implement and validate any perturbative Lagrangian-based particle physics model for further theoretical, phenomenological experimental studies. The starting point is FeynRules, Mathematica package that allows generate Feynman rules Lagrangian then, through dedicated interfaces, automatically pass the corresponding relevant information supported Monte Carlo event generator. prove power, robustness flexibility of this approach by presenting few examples new...
Motivated by TeV-scale neutrino mass models, we propose a systematic treatment of heavy $(N)$ production at hadron colliders. Our simple and efficient modeling the vector boson fusion (VBF) $W^\pm\gamma\rightarrow N\ell^\pm$ $N\ell^\pm+nj$ signal definitions resolve collinear soft divergences that have plagued past studies, is applicable to other color-singlet processes, e.g., associated Higgs $(W^\pm h)$, sparticle $(\tilde{\ell}^\pm\tilde{\nu_\ell})$, charged $(h^{\pm\pm}h^{\mp})$...
We use top quark pair production as a probe of top-philic non-resonant new physics. Following low energy effective field theory approach, we calculate several key observables in at hadron colliders (e.g., total cross section, $ t\bar{t} invariant mass distribution, forward-backward asymmetry, spin correlations) including the interference Standard Model with dimension-six operators. determine LHC reach probing physics after having taken into account Tevatron constraints. In particular, show...
Four independent dimension-eight operators give rise to anomalous neutral triple gauge boson interactions, one CP-even and three CP-odd. Only the operator interferes with Standard Model for production of a pair on-shell bosons. However, effects are found be tiny due mainly mismatch Z polarization between productions from SM new operator.
This note proposes common standards and prescriptions for the effective-field-theory interpretation of top-quark measurements at LHC.
A bstract We for the first time identify all dimension-8 (dim-8) SMEFT operators that can have an interference with SM E 4 /Λ enhancement in high energy limit processes $$ q\overline{q}\to WW/ WZ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mi>q</mml:mi><mml:mover><mml:mi>q</mml:mi><mml:mo>¯</mml:mo></mml:mover><mml:mo>→</mml:mo><mml:mi>WW</mml:mi><mml:mo>/</mml:mo><mml:mi>WZ</mml:mi></mml:math> . Our results therefore explicitly show non-interference observed dimension-six...
This report summarizes the work of Energy Frontier Top Quark working group 2013 Community Summer Study (Snowmass).
A bstract Effective interactions involving both the top quark and Higgs field are among least constrained of all possible (gauge invariant) dimension-six operators in Standard Model. Such a handful operators, particular chromomagnetic dipole moment, might encapsulate signs new physics responsible for electroweak symmetry breaking. In this work, we compute contributions these to inclusive $ t\overline t h productions. We argue that: i) rather strong constraints on overall size can already be...
A bstract At the LHC, top quarks can be produced singly with a sizeable rate via electroweak interactions. This process probes limited set of top-quark couplings, i.e., same entering decay, yet at higher scales and different sensitivity. Requiring production Z or H boson in association single-top significantly extends sensitivity this to new physics, opening up unique possibility testing top-Higgs, top-gauge, triple gauge, gauge-Higgs interactions without being dominated by QCD We consider...
Modern global analyses of the structure proton include collider measurements which probe energies well above electroweak scale. While these provide powerful constraints on parton distribution functions (PDFs), they are also sensitive to beyond standard model (BSM) dynamics if affect fitted distributions. Here we present a first simultaneous determination PDFs and BSM effects from deep-inelastic function data by means NNPDF framework. We consider representative four-fermion operators SM...
Computations at next-to-leading order in the Standard Model offer new technical challenges presence of higher dimensional operators. We introduce a framework that, starting from top-quark effective field theory dimension six, allows one to make predictions for cross sections as well distributions fully automatic way. As an application, we present first complete results QCD flavor-changing neutral interactions including parton shower effects, $tZ$, $th$, $t\ensuremath{\gamma}$ associated...
In this paper we study the production of a heavy charged Higgs boson in association with quarks at LHC two-Higgs-doublet model. We present for first time fully-differential results obtained four-flavour scheme NLO accuracy, both fixed order and including matching parton showers. Relevant differential distributions are studied two values mass thorough comparison is performed between predictions four- five-flavour schemes. show that agreement schemes improved by NLO(+PS) corrections...
With the discovery of Higgs boson, spectrum particles in Standard Model (SM) is complete. It more important than ever to perform precision measurements and test for deviations from SM predictions electroweak sector. In this report, we investigate two themes arena measurements: observables (EWPOs) that particle content couplings minimal supersymmetric SM, involving multiple gauge bosons final state which provide unique probes basic tenets symmetry breaking. Among EWPOs focus our discussion on...
A bstract We perform a global fit within the pseudo-Nambu-Goldstone Dark Matter (DM) model emerging from an additional complex scalar singlet with softly broken U (1) symmetry. Leading to momentum-suppressed DM-nucleon cross section at tree level, provides natural explanation for null results direct detection experiments. Our combines constraints perturbative unitarity, DM relic abundance, Higgs invisible decay, electroweak precision observables and latest searches colliders. The are...
We present predictions for the total cross section production of a charged Higgs boson in intermediate-mass range ($m_{H^{\pm}}\sim m_t$) at LHC, focusing on type-II two-Higgs-doublet model. Results are obtained next-to-leading order (NLO) accuracy QCD perturbation theory, by studying full process $pp\to H^\pm W^\mp b \bar b$ complex-(top)-mass scheme with massive bottom quarks. Compared to lowest-order predictions, NLO corrections have sizeable impact: they increase roughly 50\% and reduce...