A5101956731- Astrophysics and Cosmic Phenomena
- Neutrino Physics Research
- Dark Matter and Cosmic Phenomena
- Particle physics theoretical and experimental studies
- Gamma-ray bursts and supernovae
- Radio Astronomy Observations and Technology
- Pulsars and Gravitational Waves Research
- Nuclear physics research studies
- Particle Detector Development and Performance
- Atmospheric Ozone and Climate
- Quantum Chromodynamics and Particle Interactions
- Atomic and Molecular Physics
- Nuclear Physics and Applications
- Advanced Chemical Physics Studies
- Atomic and Subatomic Physics Research
- Cosmology and Gravitation Theories
- Methane Hydrates and Related Phenomena
- Radiation Detection and Scintillator Technologies
- Astrophysical Phenomena and Observations
- Computational Physics and Python Applications
- Tropical and Extratropical Cyclones Research
- Astronomical and nuclear sciences
- Nuclear reactor physics and engineering
- Black Holes and Theoretical Physics
- Earth Systems and Cosmic Evolution
Université Paris Cité
2016-2025
Centre National de la Recherche Scientifique
2016-2025
Institut Universitaire de France
2016-2025
Laboratoire AstroParticule et Cosmologie
2016-2025
Universitat Politècnica de València
2021-2023
Université Claude Bernard Lyon 1
2023
Institut de physique du globe de Paris
2021-2023
Laboratoire de Géologie de Lyon : Terre, Planètes et Environnement
2023
Parc Científic de la Universitat de València
2021-2023
Cidete (Spain)
2023
Many of the astrophysical sources and violent phenomena observed in our Universe are potential emitters gravitational waves high-energy cosmic radiation, including photons, hadrons, presumably also neutrinos. Both (GW) neutrinos (HEN) messengers that may escape much denser media than photons. They travel unaffected over cosmological distances, carrying information from inner regions engines which they emitted (and photons charged rays cannot reach us). For same reasons, such could reveal...
The $(d,{}^{2}\mathrm{He})$ charge-exchange reaction on $^{76}\mathrm{Se}$ was studied at an incident energy of 183 MeV. outgoing two protons in the ${}^{1}{S}_{0}$ state, referred to as $^{2}\mathrm{He}$, were both momentum analyzed and detected by same spectrometer detector. experiment performed KVI, Groningen, using magnetic BBS three angular positions: ${0}^{\ifmmode^\circ\else\textdegree\fi{}},2.{5}^{\ifmmode^\circ\else\textdegree\fi{}}$, ${5}^{\ifmmode^\circ\else\textdegree\fi{}}$....
Differential cross sections for transitions of known weak strength were measured with the (3He, t) reaction at 420 MeV on targets 12C, 13C, 18O, 26Mg, 58Ni, 60Ni, 90Zr, 118Sn, 120Sn, and 208Pb. Using these data, it is shown that proportionalities between strengths this probe follow simple trends as a function mass number. These can be used to confidently determine Gamow-Teller distributions in nuclei which proportionality cannot calibrated via β-decay strengths. Although theoretical...
Abstract The Protvino accelerator facility located in the Moscow region, Russia, is a good position to offer rich experimental research program field of neutrino physics. Of particular interest possibility direct beam from towards KM3NeT/ORCA detector, which currently under construction Mediterranean Sea 40 km offshore Toulon, France. This proposal known as P2O. Thanks its baseline 2595 km, this experiment would yield an unparalleled sensitivity matter effects Earth, allowing for...
Neutrino oscillation tomography is potentially a method for probing the properties of Earth's deep interior, complementing classical geophysical and geochemical methods. It relies on detection neutrinos, subatomic particles that interact weakly with matter can traverse Earth’s interior essentially unimpeded. Neutrinos exist in three types, called "flavors": electron, muon, tau. As they propagate, change from one flavor to another, phenomenon known as neutrino oscillation....
The ${}^{96}\mathrm{Mo}(d,{}^{2}\mathrm{He}){}^{96}\mathrm{Nb}$ charge-exchange reaction was investigated at an incident energy of ${E}_{d}=183.5$ MeV. An excitation-energy resolution 110 keV achieved. experiment performed KVI, Groningen, using the magnetic spectrometer BBS three angular positions: ${0}^{\ifmmode^\circ\else\textdegree\fi{}},2.{5}^{\ifmmode^\circ\else\textdegree\fi{}}$, and ${6}^{\ifmmode^\circ\else\textdegree\fi{}}$. We found that below 6 MeV almost entire Gamow-Teller...
We present the baseline multimessenger analysis method for joint observations of gravitational waves (GW) and high-energy neutrinos (HEN), together with a detailed expected science reach search. The combines data from GW HEN detectors, uses blue-luminosity-weighted distribution galaxies. derive GW+HEN source rate upper limits wide range parameters covering several emission models. Using published sensitivities externally triggered searches, we limit estimates both ongoing initial LIGO-Virgo...
A bstract Large mass ice/water Cherenkov experiments, optimized to detect low energy (1–20 GeV) atmospheric neutrinos, have the potential discriminate between normal and inverted neutrino hierarchies. The sensitivity depends on several model detector parameters, such as flux profile normalization, Earth density profile, oscillation parameter uncertainties, effective resolution. proper evaluation of hierarchy discrimination power requires a robust statistical approach. In this work, Toy Monte...
In the last 70 years, geophysics has established that Earth's outer core is an FeNi alloy containing a few percent of light elements, whose nature and amount remain controversial today. Besides classical combinations silicon oxygen, hydrogen been advocated as only element could account alone for both density velocity profiles core. Here we show how this question can be addressed from independant viewpoint, by exploiting tomographic information provided atmospheric neutrinos,...
A new experimental approach to the famous problem of anomalously slow Gamow-Teller (GT) transitions in β decay A=14 multiplet is presented. The GT strength distributions excited states 14C and 14O were studied high-resolution (d,2He) (3He,t) charge-exchange reactions on 14N. No-core shell-model calculations capable reproducing suppression decays predict a selective excitation Jπ=2+ states. confirmation represents validation assumptions about underlying structure 14N ground state wave...
A recoil coincidence technique has been applied to measure the alpha-decay branching ratios of near-threshold states in 19Ne. Populating these using (p,t) reaction inverse kinematics, we detected recoils and their decay products with 100% geometric efficiency a magnetic spectrometer. Combining our ratio measurements independent determinations radiative widths states, calculate astrophysical rate 15O(alpha,gamma)19Ne. Using this rate, perform hydrodynamic calculations nova outbursts conclude...
Angular distributions of differential cross sections for elastic and inelastic deuteron scattering from $^{6}\mathrm{Li}$, $^{16}\mathrm{O}$, $^{32}\mathrm{S}$, $^{50,51}\mathrm{V}$, $^{70,72}\mathrm{Ge}$ at an incident energy $171\phantom{\rule{0.3em}{0ex}}\mathrm{MeV}$ $^{90}\mathrm{Zr}$ $^{116}\mathrm{Sn}$ $183\phantom{\rule{0.3em}{0ex}}\mathrm{MeV}$ are presented. Phenomenological optical-model parameters extracted the data compared to existing deuteron-nucleus global optical potentials.
Many of the astrophysical sources and violent phenomena observed in our Universe are potential emitters gravitational waves (GWs) high-energy neutrinos (HENs). A network GW detectors such as LIGO Virgo can determine direction/time bursts while IceCube ANTARES neutrino telescopes also provide accurate directional information for HEN events. Requiring consistency between both, totally independent, detection channels shall enable new searches cosmic events arriving from common sources, which...
KM3NeT-ORCA is a water-Cherenkov neutrino detector designed for studying the oscillations of atmospheric neutrinos, with primary objective measuring mass ordering. Atmospheric neutrinos crossing Earth undergo matter effects, modifying pattern their flavour oscillations. The study angular and energy distribution events in ORCA can therefore provide tomographic information on Earth's interior an independent technique, complementary to standard geophysics methods. Preliminary estimations based...
The detection of Earth-skimming tau neutrinos has turned into a very promising strategy for the observation ultra-high-energy cosmic neutrinos. sensitivity this channel crucially depends on parameters propagation through terrestrial crust, which governs flux emerging leptons that can be detected. One characteristics is possibility regeneration multiple ${\ensuremath{\nu}}_{\ensuremath{\tau}}\ensuremath{\leftrightarrow}\ensuremath{\tau}$ conversions, are often neglected in standard picture....
Angular distributions for elastic and inelastic deuteron scattering on ${}^{12}\mathrm{C},$ ${}^{24}\mathrm{Mg},$ ${}^{58}\mathrm{Ni}$ have been measured at a bombarding energy of 170 MeV. The data are analyzed in terms the optical model. extracted model parameters compared to existing global potentials.
We study flavour neutrinos confined to our 4-dimensional world coupled one "bulk" state, i.e. a Kaluza-Klein tower. discuss the spatial development of neutrino disappearance, possibility resurgence and effective transitions induced in this mechanism. show that even simple model can produce an energy-independent suppression at large distances, relate experimental data.
Cross sections for the charge-exchange reaction $(d,^{2}\mathrm{He})$ on $^{50}\mathrm{V}$, only odd-odd stable nucleus in $pf$ shell, have been measured at an incident energy of 171 MeV. The two correlated protons unbound $^{2}\mathrm{He}$ system were both momentum analyzed and detected by same spectrometer detector. Measurements carried out forward center-of-mass angles up to 6\ifmmode^\circ\else\textdegree\fi{}. $\mathrm{GT}{}^{+}$ strength distribution has extracted about 12 MeV...
We have used the 43 MeV/nucleon primary tritium beam of AGOR facility with an intensity $4\ifmmode\times\else\texttimes\fi{}{10}^{7}$ pps and BBS experimental setup to study (t,$^{3}\mathrm{He}$) reaction between ${0}^{\ifmmode^\circ\else\textdegree\fi{}}$ ${5}^{\ifmmode^\circ\else\textdegree\fi{}}$ lab angles on $^{12}\mathrm{C}$, $^{48}\mathrm{Ca}$, $^{58}\mathrm{Ni}$ targets. The standard ray-tracing procedure has allowed us obtain excitation-energy spectra up 30 MeV in six angular bins...
We study the energy losses of tau lepton in matter through electromagnetic processes at ultrahigh energy. use both a stochastic and continuous framework to treat these interactions compare flux leptons propagated after some amount matter. discuss accuracy approximation by studying propagation standard rock taus with monoenergetic power-law injection spectra. Despite fluctuations introduced nature radiative processes, we show that leads same results for
The study of atmospheric neutrinos crossing the Earth can provide tomographic information on Earth’s interior, complementary to standard geophysics methods. This contribution presents an updated potential KM3NeT-ORCA detector for neutrino oscillation tomography Earth, showing that after ten years operation it measure electron density in both lower mantle and outer core with a precision few percents case normal mass hierarchy.
The ${}^{15}\mathrm{O}(\ensuremath{\alpha},\ensuremath{\gamma}{)}^{19}\mathrm{Ne}$ reaction is one of two routes for breakout from the hot CNO cycles into $\mathrm{rp}$ process in accreting neutron stars. Its astrophysical rate depends critically on decay properties excited states ${}^{19}\mathrm{Ne}$ lying just above ${}^{15}\mathrm{O}+\ensuremath{\alpha}$ threshold. We have measured $\ensuremath{\alpha}$-decay branching ratios these using ${p(}^{21}\mathrm{Ne}{,t)}^{19}\mathrm{Ne}$ at 43...