P. Verdier
A5106315239- Particle physics theoretical and experimental studies
- High-Energy Particle Collisions Research
- Quantum Chromodynamics and Particle Interactions
- Particle Detector Development and Performance
- Dark Matter and Cosmic Phenomena
- Cosmology and Gravitation Theories
- Computational Physics and Python Applications
- Neutrino Physics Research
- Black Holes and Theoretical Physics
- Astrophysics and Cosmic Phenomena
- Pulsars and Gravitational Waves Research
- Particle Accelerators and Free-Electron Lasers
- Gamma-ray bursts and supernovae
- Medical Imaging Techniques and Applications
- Atomic and Subatomic Physics Research
- Distributed and Parallel Computing Systems
- Nuclear reactor physics and engineering
- Astrophysical Phenomena and Observations
- Particle accelerators and beam dynamics
- International Science and Diplomacy
- High-pressure geophysics and materials
- Nuclear physics research studies
- Radiation Therapy and Dosimetry
- Geophysics and Gravity Measurements
- Scientific Measurement and Uncertainty Evaluation
Institute of Nuclear Physics of Lyon
2014-2025
Institut de Physique des 2 Infinis de Lyon
2022-2025
Université Claude Bernard Lyon 1
2013-2024
Centre National de la Recherche Scientifique
2013-2024
A. Alikhanyan National Laboratory
2024
Institut National de Physique Nucléaire et de Physique des Particules
2012-2024
University of Antwerp
2024
Institute of High Energy Physics
2012-2024
Institut de Physique
2023-2024
RWTH Aachen University
2012-2023
We study the sensitivity of LHC, with 20 inverse-fb data, to lepton flavour violating Higgs boson decays h -> tau+ mu- (and e-). consider large population Higgses produced in gluon fusion, combined leptonic tau, and estimate that LHC could set a 95 % confidence level bound BR(h tau mu) < 4.5 \times 10^{-3}. This correponds coupling order Cheng-Sher ansatz y_{tau mu} = sqrt{m_tau m_mu/v^2}.
The discovery of gravitational waves, first observed in September 2015 following the merger a binary black hole system, has already revolutionised our understanding Universe. This was further enhanced August 2017, when coalescence neutron star system both with waves and variety electromagnetic counterparts; this joint observation marked beginning multimessenger astronomy. Einstein Telescope, proposed next-generation ground-based gravitational-wave observatory, will dramatically increase...
Little Higgs models with $T$ Parity contain new vectorlike fermions, the $T$-odd quarks or ``TOQ's'', which can be produced at hadron colliders a QCD-strength cross section. Events two acoplanar jets and large missing transverse energy provide simple signature of TOQ production. We show that searches for this Tevatron Run II data probe significant part model parameter space not accessible to previous experiments, exploring masses up about 400 GeV. This reach covers parts where lightest...
A bstract We estimate that the LHC could set bounds BR ( Z → μ ± e ∓ ) < 4 . 1 × 10 −7 and τ 3 5 −6 (at 95% C.L.) with 20 fb −1 of data at 8 TeV. similar sensitivity can be anticipated for , because we consider leptonic decays such + invisible. These limits compared to LEP1 order −5 Such collider searches are sensitive a flavour-changing effective coupling which is energy dependent, so complementary obtained from $ \tau \to \ell \overline \mu e\overline
We study the sensitivity of Tevatron and 7 TeV LHC to a leptoquark $S$ coupling top quark charged lepton $L$ ($=e$, $\ensuremath{\mu}$, or $\ensuremath{\tau}$). For Tevatron, we focus on case ${m}_{S}<{m}_{t}$, where pair production cross section is large, decay three-body: $S\ensuremath{\rightarrow}Wb{L}^{\ifmmode\pm\else\textpm\fi{}}$. argue that existing observations could exclude ${m}_{S}\ensuremath{\lesssim}160\text{ }\text{ }\mathrm{GeV}$. ${m}_{S}>{m}_{t}$, show experiments with...
The degradation of signal in silicon sensors is studied under conditions expected at the CERN High-Luminosity LHC. 200 μm thick n-type are irradiated with protons different energies to fluences up 3 · 1015 neq/cm2. Pulsed red laser light a wavelength 672 nm used generate electron-hole pairs sensors. induced signals determine charge collection efficiencies separately for electrons and holes drifting through sensor. effective trapping rates extracted by comparing results simulation. electric...
The hierarchy of scales which would allow dimension-six contact interactions to parametrize new physics may not be verified at colliders. Instead, we explore the feasibility and usefulness parametrizing high-energy tail distributions LHC using form factors. We focus on process $pp\ensuremath{\rightarrow}\ensuremath{\ell}\overline{\ensuremath{\ell}}$ in presence $t$- (or $s$)-channel physics, guess a factor from partonic cross section, attempt use data constrain its coefficients, coefficients...
A search for massive resonances decaying to a Z boson and photon is performed in events with hadronically candidate, separately light-quark b quark decay modes, identified using jet substructure advanced tagging techniques. Results are based on samples of proton-proton collisions collected the CMS detector at LHC center-of-mass energies 8 13 TeV, corresponding integrated luminosities 19.7 2.7 inverse femtobarns, respectively. The results combined those similar leptonic modes boson, same data...
The discovery of gravitational waves, first observed in September 2015 following the merger a binary black hole system, has already revolutionised our understanding Universe. This was further enhanced August 2017, when coalescence neutron star system both with waves and variety electromagnetic counterparts; this joint observation marked beginning multimessenger astronomy. Einstein Telescope, proposed next-generation ground-based gravitational-wave observatory, will dramatically increase...