A5073571364- Neutrino Physics Research
- Particle physics theoretical and experimental studies
- Nuclear physics research studies
- Nuclear Physics and Applications
- Quantum Chromodynamics and Particle Interactions
- Astrophysics and Cosmic Phenomena
- Nuclear reactor physics and engineering
- Particle accelerators and beam dynamics
- Atomic and Molecular Physics
- Particle Accelerators and Free-Electron Lasers
- Quantum, superfluid, helium dynamics
- Superconducting Materials and Applications
- Atomic and Subatomic Physics Research
- Advanced Chemical Physics Studies
- Astronomical and nuclear sciences
- Dark Matter and Cosmic Phenomena
- Muon and positron interactions and applications
- Nuclear Materials and Properties
- Advanced NMR Techniques and Applications
- High-Energy Particle Collisions Research
- Urological Disorders and Treatments
- Radiation Detection and Scintillator Technologies
- Particle Detector Development and Performance
- Ureteral procedures and complications
- Spectroscopy and Quantum Chemical Studies
Sorbonne Université
2021-2025
Centre National de la Recherche Scientifique
2006-2025
Laboratoire de Physique Nucléaire et de Hautes Énergies
2021-2025
Institut Polytechnique des Sciences Avancées
2019-2025
Institut National de Physique Nucléaire et de Physique des Particules
2008-2025
Délégation Paris 7
2023-2024
Université Paris Cité
2016-2024
European Organization for Nuclear Research
2007-2023
Commissariat à l'Énergie Atomique et aux Énergies Alternatives
2010-2019
CEA Paris-Saclay
2016-2019
We present a theory of neutrino interactions with nuclei aimed at the description partial cross-sections, namely quasi-elastic and multi-nucleon emission, coherent incoherent single pion production. For this purpose, we use nuclear responses treated in random phase approximation, which allows unified these channels. It is particularly suited for production where collective effects are important whereas they moderate other also study evolution cross-sections mass number from carbon to...
We investigate the interaction of neutrinos and antineutrinos with nuclei. explore, in particular, role played by multinucleon excitations, which can contaminate quasielastic cross section. For term produces a sizable increase Part effect arises from tensor correlations. this influence is smaller, owing to axial-vector interference, increases relative importance terms that are not affected these excitations.
We investigate the double differential neutrino-carbon quasielastic cross sections as measured by MiniBooNE experiment. Our present treatment incorporates relativistic corrections in nuclear response functions and includes multinucleon component. confirm our previous conclusion that it is possible to account for all data without any modification of axial mass. also introduce Q^2 distribution charged neutral current. The point at a sizable component beside genuine peak. They are indicative...
Neutrino oscillations physics is entered in the precision era.In this context accelerator-based neutrino experiments need a reduction of systematic errors to level few percent.Today one most important sources are neutrinonucleus cross sections which hundreds-MeV few-GeV energy region known with not exceeding 20%.In article we review present experimental and theoretical knowledge neutrino-nucleus interaction physics.After introducing oscillation experiments, overview general aspects sections,...
We discuss the accuracy of usual procedure for neutrino energy reconstruction which is based on quasielastic kinematics. Our results are described in terms a probability distribution real value. Several factors responsible deviations from reconstructed The main one multinucleon component interaction case Cherenkov detectors enters as cross section, increasing mean can differ appreciably As an application we derive, excess electron events attributed to conversion muon neutrinos, true...
Valuable theoretical predictions of nuclear dipole excitations in the whole chart are great interest for different applications, including particular astrophysics. Here we present large-scale calculations $E1\phantom{\rule{4pt}{0ex}}\ensuremath{\gamma}$-ray strength function obtained framework axially symmetric deformed quasiparticle random-phase approximation based on finite-range Gogny force. This approach is applied to even-even nuclei, odd nuclei being derived by interpolation. The...
Photoneutron cross sections were measured for ${}^{94}$Mo, ${}^{95}$Mo, ${}^{96}$Mo, ${}^{97}$Mo, ${}^{98}$Mo, and ${}^{100}$Mo near the neutron threshold with quasi-monochromatic laser-Compton scattering $\ensuremath{\gamma}$ rays. The photoneutron data analyzed Skyrme Hartree-Fock-Bogoliubov (HFB) plus quasiparticle random phase approximation (QRPA) model axially symmetric-deformed Gogny HFB QRPA of $E1$ $\ensuremath{\gamma}$-ray strength. Combining strength function constrained by present...
We present a detailed study of continuum random-phase approximation approach to quasielastic electron-nucleus and neutrino-nucleus scattering. compare the $(e,e\ensuremath{'})$ cross-section predictions with electron scattering data for nuclear targets $^{12}\mathrm{C}$, $^{16}\mathrm{O}$, $^{40}\mathrm{Ca}$, in kinematic region where is expected dominate. examine longitudinal transverse contributions $^{12}\mathrm{C}(e,e\ensuremath{'})$ them available data. find an overall satisfactory...
Data on neutrino oscillation often involve reconstructed energies while the analysis implies real energy. The corrections corresponding to transformation from energy are discussed in case of Cherenkov detectors where multinucleon events appear as quasielastic ones. These show up a tendency for escape region high flux, with clear preference low side. This is an effect component cross section. We have applied our T2K and MiniBooNE data electron appearance or...
We investigate the MiniBooNE recent data on antineutrino-nucleus interaction, using same theoretical description with parameters as in our previous work neutrino interactions. The double differential quasielastic cross section, which is free from energy reconstruction problem, well reproduced by model once multinucleon excitations are incorporated. A similar agreement achieved for ${Q}^{2}$ distribution.
The Brussels-Montreal Skyrme functionals have been successful in describing properties of both finite nuclei and infinite homogeneous nuclear matter. In their latest version, these equipped with two extra density-dependent terms order to reproduce simultaneously ground state matter while avoiding at the same time arising ferromagnetic instabilities. present article, we extend our previous results linear response theory include such zero temperature pure neutron resulting formalism is then...
We analyze charged-current electron-neutrino cross sections on Carbon. consider two different theoretical approaches, one hand the Continuum Random Phase Approximation (CRPA) which allows a description of giant resonances and quasielastic excitations, other RPA-based calculations are able to describe multinucleon emission coherent incoherent pion production as well excitations. compare approaches in genuine channel, find satisfactory agreement between them at large energies while low...
Fully consistent axially-symmetric deformed quasiparticle random-phase approximation (QRPA) calculations have been performed, using the same Gogny D1S effective force for both Hartree-Fock-Bogolyubov mean field and QRPA matrix. New implementation of this approach leads to applicability heavy nuclei. Giant resonances low-energy collective states monopole, dipole, quadrupole, octupole modes are predicted nucleus $^{238}\mathrm{U}$ compared with experimental data.
The charge-exchange excitations in nuclei are studied within the fully self-consistent proton-neutron quasiparticle random-phase approximation using finite-range Gogny interaction. No additional parameters beyond those included effective nuclear force included. Axially symmetric deformations consistently taken into account, both description of ground states and spin-isospin excitations. We focus on isobaric analog Gamow-Teller resonances. A comparison predicted strength distributions to...
[Background] Meticulous modeling of neutrino-nucleus interactions is essential to achieve the unprecedented precision goals present and future accelerator-based neutrino-oscillation experiments. [Purpose] Confront our calculations charged-current quasielastic cross section with measurements MiniBooNE T2K, quantitatively investigate role nuclear-structure effects, in particular, low-energy nuclear excitations forward muon scattering. [Method] The model takes mean-field (MF) approach as...
Valuable theoretical predictions of nuclear dipole excitations in the whole chart are great interest for different applications, including particular astrophysics. Here we extend our large-scale calculations $E1 \ensuremath{\gamma}$-ray strength function, obtained framework axially- symmetric-deformed quasiparticle random phase approximation (QRPA) based on finite-range D1M Gogny force, to calculation $M1$ function. We compare QRPA prediction with available experimental data and show that a...
Background: Nuclear short-range correlations (SRCs) are corrections to mean-field wave functions connected with the short-distance behavior of nucleon-nucleon interaction. These SRCs provide lepton-nucleus cross sections as computed in impulse approximation (IA).Purpose: We want investigate influence on one-nucleon ($1N$) and two-nucleon ($2N$) knockout channels for muon-neutrino induced processes a $^{12}\mathrm{C}$ target at energies relevant contemporary measurements.Method: The model...
Photoneutron cross sections were measured for the seven stable samarium isotopes ${}^{144,147,148,149,150,152,154}\mathrm{Sm}$ near neutron threshold with quasi-monochromatic laser-Compton scattering $\ensuremath{\gamma}\phantom{\rule{0.28em}{0ex}}\mathrm{rays}$. Our photoneutron are found to be low by 20%--37% relative existing data. The data analyzed talys reaction code considering Skyrme Hartree-Fock-Bogoliubov (HFB) plus quasiparticle random phase approximation (QRPA) model and axially...
The most challenging and impactful uncertainties that future accelerator-based measurements of neutrino oscillations must overcome stem from our limited ability to model few-GeV neutrino-nucleus interactions. In particular, it is crucial better understand the nuclear effects which can alter final state topology kinematics interactions, inducing possible biases in energy reconstruction. upgraded ND280 near detector T2K experiment will directly confront interaction using a new suite detectors...
We present a theoretical framework allowing to make an explicit connection between the phenomenology of QCD, namely properties gluon correlator and Wilson loops, particular relativistic model for description nuclear matter neutron stars, chiral confining model. Starting with Field Correlator Method, which incorporates explicitly simultaneously confinement symmetry breaking, we describe how obtain response composite nucleon scalar field, relative role breaking in in-medium mass evolution,...
Abstract Maximizing the discovery potential of increasingly precise neutrino experiments will require an improved theoretical understanding neutrino-nucleus cross sections over a wide range energies. Low-energy interactions are needed to reconstruct energies astrophysical neutrinos from supernovae bursts and search for new physics using measurement coherent elastic scattering. Higher-energy involve variety reaction mechanisms including quasi-elastic scattering, resonance production, deep...
We present a theoretical framework that allows one to make an explicit connection between the phenomenology of QCD, namely properties gluon correlator and Wilson loops, particular relativistic model for description nuclear matter neutron stars: chiral confining model. Starting with field method, which explicitly simultaneously incorporates confinement symmetry breaking, we describe how obtain response composite nucleon scalar field, as well relative role breaking in in-medium mass evolution,...
Low-energy dipole excitations in neon isotopes and $N=16$ isotones are calculated with a fully consistent axially-symmetric-deformed quasiparticle random phase approximation (QRPA) approach based on Hartree-Fock-Bogolyubov (HFB) states. The same Gogny D1S effective force has been used both HFB QRPA calculations. microscopical structure of these low-lying resonances, as well the behavior proton neutron transition densities, investigated order to determine isoscalar or isovector nature...