A5068584333- Particle physics theoretical and experimental studies
- Quantum Chromodynamics and Particle Interactions
- Black Holes and Theoretical Physics
- High-Energy Particle Collisions Research
- Cosmology and Gravitation Theories
- Dark Matter and Cosmic Phenomena
- Particle Detector Development and Performance
- Neutrino Physics Research
- Computational Physics and Python Applications
- Distributed and Parallel Computing Systems
- Noncommutative and Quantum Gravity Theories
- Particle Accelerators and Free-Electron Lasers
- Atomic and Subatomic Physics Research
- Nuclear physics research studies
- Physics of Superconductivity and Magnetism
- Astrophysics and Cosmic Phenomena
- International Science and Diplomacy
- Pulsars and Gravitational Waves Research
- Scientific Computing and Data Management
- Theoretical and Computational Physics
- Quantum chaos and dynamical systems
- Geophysics and Gravity Measurements
- Superconducting Materials and Applications
- Advanced Operator Algebra Research
- Radioactive Decay and Measurement Techniques
Institute of Nuclear Physics of Lyon
2014-2025
Institut de Physique des 2 Infinis de Lyon
2019-2025
Université Claude Bernard Lyon 1
2015-2024
Centre National de la Recherche Scientifique
2015-2024
Institut National de Physique Nucléaire et de Physique des Particules
2014-2024
Institut de Physique
2002-2024
University of Johannesburg
2023-2024
Centre de Calcul de l’Institut National de Physique Nucléaire et de Physique des Particules
2015-2022
Institut National des Sciences Appliquées de Lyon
2021-2022
Institut Universitaire de France
2015-2018
This chapter of the report "Flavor in era LHC" Workshop discusses theoretical, phenomenological and experimental issues related to flavor phenomena charged lepton sector conserving CP-violating processes. We review current limits main theoretical models for structure fundamental particles. analyze consequences available data, setting constraints on explicit beyond standard model, presenting benchmarks discovery potential forthcoming measurements both at LHC low energy, exploring options...
This document is the final report of ATLAS-CMS Dark Matter Forum, a forum organized by ATLAS and CMS collaborations with participation experts on theories Matter, to select minimal basis set dark matter simplified models that should support design early LHC Run-2 searches. A prioritized, compact benchmark proposed, accompanied studies parameter space these repository generator implementations. also addresses how apply Effective Field Theory formalism for collider searches present results...
Using the recent joint results from ATLAS and CMS collaborations on Higgs boson, we determine current status of composite electroweak dynamics models based expected scalar sector. Our analysis can be used as a minimal template for wider class between two limiting cases Goldstone Technicolor-like ones. This is possible due to existence unified description, both at effective fundamental Lagrangian levels, where boson itself emerge, depending way symmetry embedded, either pseudo-Goldstone or...
We consider the phenomenology at Large Hadron Collider of new heavy vector-like quarks which couple mainly to third generation via Yukawa interactions, with special emphasis on non-standard doublet representations are less constrained from present data. also discuss in detail flavour limits tree level and loop implications a generalised CKM mixing matrix these cases.
We present a phenomenological theory of scalar particles that transform as sextet and an octet QCD interactions. These may arise light bound states fundamental dynamics giving rise to composite Higgs boson partial compositeness for the top. As concrete example, we discuss explicit UV completion based on SU(4)/Sp(4) coset, where colour is carried by additional fermions charged under confining gauge group. Top partners, well potentially even lighter coloured scalars, fermions. study production...
We present the activities of "New Physics" working group for "Physics at TeV Colliders" workshop (Les Houches, France, 3--21 June, 2013). Our report includes new computational tool developments, studies implications Higgs boson discovery on physics, important signatures searches natural physics LHC, flavour aspects and assessments interplay between direct dark matter LHC.
We propose simulation strategies for single production of third generation vector-like quarks at the LHC, implementing next-to-leading-order corrections in QCD and studying detail their effect on cross sections differential distributions. also investigate differences relative incertitudes induced by use Four-Flavour Number Scheme ${\it versus}$ Five-Flavour Scheme. As a phenomenological illustration, we concentrate coupling to Standard Model association with jet assuming standard couplings...
We study the phenomenology of new heavy vector-like fermions that couple to third generation quarks via Yukawa interactions, covering all allowed representations under standard model gauge groups. first review tree and loop level bounds on these states. then discuss decays loop-induced photon or gluon plus top. The main at are W b and/or Z Higgs top couplings. radiative turn out be quite close naive estimate: in cases, perturbative parameter space, branching ratios mildly sensitive couplings...
A bstract We consider the Higgs boson decay processes and its production, provide a parameterisation tailored for testing models of new physics beyond Standard Model. also compare our formalism to other existing parameterisations based on scaling factors in front couplings effective Lagrangian approaches. Different formalisms allow best address different aspects physics. The choice particular depends non-obvious balance quantity quality available experimental data, envisaged purpose degree...
A bstract We consider a realisation of composite Higgs models in the context SU(6) / SO(6) symmetry, which features custodial bi-triplet, two doublets and dark matter candidates. This model can arise from an underlying gauge-fermion theory. The general vacuum structure is explored using top partial compositeness to generate special characterised by single angle aligned with first doublet. present CP Dark Matter ℤ 2 parity different pNGB bases analyse spectra absence tadpoles tachyons. For...
A bstract We provide a comprehensive discussion, together with complete setup for simulations, relevant the production of single vector-like quark at hadron colliders. Our predictions include finite width effects, signal-background interference effects and next-to-leading order QCD corrections. explicitly apply framework to study T charge 2/3, but same procedure can be used analyse quarks − 4 / 3, 1 2/3 5/3, when interacts Standard Model electroweak bosons. Moreover, this straightforwardly...
We study the unique 6 dimensional orbifold with chiral fermions where a stable dark matter candidate is present due to Lorentz invariance on orbifold, no additional discrete symmetries imposed by hand. propose model of Universal Extra Dimensions scalar photon few hundred GeV good for matter. The spectrum characteristic geometry, and it has clear distinctive features compared previous models Kaluza-Klein 5 limit this minimal natural Notwithstanding low mass range preferred cosmology, will be...
After the discovery of a scalar resonance, resembling Higgs boson, its couplings have been extensively studied via measurement various production and decay channels on invariant mass peak. Recently, it has suggested possibility to use off-shell measurements: in particular, CMS published results based high- cross section process $gg \to ZZ$, which contains contribution Higgs. While this interpreted as constraint width after very specific assumptions are taken couplings, letter we show that...
Abstract We show that the presence of a lightish scalar resonance, $$\sigma $$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mi>σ</mml:mi></mml:math> , mixes with composite Goldstone–Higgs boson can relax typical bounds found in this class models. This mechanism, inbred models walking dynamics above condensation scale, allows for low compositeness scale $$f \gtrsim 400$$...
We describe the effective heavy meson lagrangian for S- and P-wave heavy-light mesons in terms of a model based on meson-quark interactions, where mesonic transition amplitudes are represented by diagrams with attached to loops containing light constituent quarks. The is relativistic incorporates quark symmetries. universal form factors calculated together their slopes compared existing data limits. As further applications model, strong radiative decays D* B* considered. agreement...
We discuss possible symmetries of effective theories describing spinless and spin-1 bosons, mainly to concentrate on an intriguing phenomenological possibility: that a hardly noticeable strong electroweak sector at relatively low energies. Specifically, model with both vector axial interacting bosons may possess discrete symmetry imposing degeneracy the two sets (degenerate BESS model). In such case its effects energies become almost invisible easily passes all energy precision tests. The...