A5030992353- 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
- Astrophysics and Cosmic Phenomena
- Black Holes and Theoretical Physics
- Medical Imaging Techniques and Applications
- Particle Accelerators and Free-Electron Lasers
- Radiation Detection and Scintillator Technologies
- Gamma-ray bursts and supernovae
- Distributed and Parallel Computing Systems
- Nuclear reactor physics and engineering
- Superconducting Materials and Applications
- International Science and Diplomacy
- Nuclear physics research studies
- Atomic and Subatomic Physics Research
- Radiation Therapy and Dosimetry
- Big Data Technologies and Applications
- Scientific Computing and Data Management
- Cold Atom Physics and Bose-Einstein Condensates
- CCD and CMOS Imaging Sensors
Institute of Nuclear Physics of Lyon
2016-2025
Institut de Physique des 2 Infinis de Lyon
2021-2025
Université Claude Bernard Lyon 1
2011-2023
Institut National de Physique Nucléaire et de Physique des Particules
2008-2023
Centre National de la Recherche Scientifique
2010-2023
Georgian Technical University
2023
European Organization for Nuclear Research
2005-2022
Institute of High Energy Physics
2011-2021
Institut de Physique
2020
Centre de Gestion Scientifique
2015-2019
The discovery by the ATLAS and CMS experiments of a new boson with mass around 125 GeV measured properties compatible those Standard-Model Higgs boson, coupled absence discoveries phenomena beyond Standard Model at TeV scale, has triggered interest in ideas for future factories. A circular e+e- collider hosted 80 to 100 km tunnel, TLEP, is among most attractive solutions proposed so far. It clean experimental environment, produces high luminosity top-quark, W Z studies, accommodates multiple...
First measurements of the Collins and Sivers asymmetries charged hadrons produced in deep-inelastic scattering muons on a transversely polarized 6-LiD target are presented. The data were taken 2002 with COMPASS spectrometer using muon beam CERN SPS at 160 GeV/c. asymmetry turns out to be compatible zero, as does measured within present statistical errors.
We report the first measurement using a solid polarized target of neutron electric form factor G(n)(E) via d-->(e-->,e(')n)p. was determined from beam-target asymmetry in scattering longitudinally electrons deuterated ammonia ( 15ND3). The performed Hall C at Thomas Jefferson National Accelerator Facility quasifree kinematics with polarization perpendicular to momentum transfer. were detected magnetic spectrometer coincidence neutrons large angle segmented detector. find =...
We present a determination of the gluon polarization Delta G/G in nucleon, based on helicity asymmetry quasi-real photoproduction events, Q^2<1(GeV/c)^2, with pair large transverse-momentum hadrons final state. The data were obtained by COMPASS experiment at CERN using 160 GeV polarized muon beam scattered 6-LiD target. for selected events is = 0.002 +- 0.019(stat.) 0.003(syst.). From this value, we obtain leading-order QCD analysis G/G=0.024 0.089(stat.) 0.057(syst.) x_g 0.095 and mu^2...
The semi-inclusive difference asymmetry A^{h^{+}-h^{-}} for hadrons of opposite charge has been measured by the COMPASS experiment at CERN. data were collected in years 2002-2004 using a 160 GeV polarised muon beam scattered off large ^6LiD target and cover range 0.006 < x 0.7 1 Q^2 100 (GeV/c)^2. In leading order QCD (LO) A_d^{h^{+}-h^{-}} measures valence quark polarisation provides an evaluation first moment Delta u_v + d_v which is found to be equal 0.40 +- 0.07 (stat.) 0.05 (syst.)...
We present a precise measurement of the deuteron longitudinal spin asymmetry A1d and spin-dependent structure function g1d at Q2<1(GeV/c)2 4×10−5<x<2.5×10−2 based on data collected by COMPASS experiment CERN during years 2002 2003. The statistical precision is tenfold better than that previous in this region. measured are found to be consistent with zero whole range x.
Calibration of the relative response individual channels barrel electromagnetic calorimeter CMS detector was accomplished, before installation, with cosmic ray muons and test beams. One fourth exposed to a beam high energy electrons calibration channels, intercalibration, found be reproducible precision about 0.3%. Additionally, data were collected rays for entire ECAL during commissioning phase. By comparing intercalibration constants obtained electron those from data, it is demonstrated...
The response of the CMS barrel calorimeter (electromagnetic plus hadronic) to hadrons, electrons and muons over a wide momentum range from 2 350 GeV/c has been measured. To our knowledge, this is widest momenta in which any system studied. These tests, carried out at H2 beam-line CERN, provide wealth information, especially low energies. analysis differences charged pions, kaons, protons antiprotons detailed discussion underlying phenomena are presented. We also show techniques that apply...
Ensuring the radiation hardness of PbWO4 crystals was one main priorities during construction electromagnetic calorimeter CMS experiment at CERN. The production on an industrial scale hard and their certification over a period several years represented difficult challenge both for crystal suppliers. present article reviews related scientific technological problems encountered.
On July 4, 2012, the discovery of a new boson, with mass around 125 GeV/c2 and properties compatible those standard-model Higgs was announced at CERN. In this context, high-luminosity electron-positron collider ring, operating in LHC tunnel centre-of-mass energy 240 GeV called LEP3, becomes an attractive opportunity both from financial scientific point views. The performance suitability CMS detector are evaluated, emphasis on accurate measurement boson properties. precision expected for...
We present the first measurement of gluon polarisation in nucleon based on photon-gluon fusion process tagged by charmed meson production and decay to charged K pi. The data were collected polarised muon scattering off a deuteron target COMPASS collaboration at CERN during 2002-2004. result this LO analysis is _x = -0.47 +- 0.44 (stat) 0.15 (syst) ~= 0.11 scale mu^2 ~ 13 (GeV/c)^2.
Between 2002 and 2006, the COMPASS high-rate experiment at CERN has been successful using Micromegas technique to reach high performances in particle detection. The twelve 40 cm times planes, largest gaseous micro-pattern detectors ever used date a energy experiment, provide an excellent tracking device hottest part of spectrometer, even with use hadron beams. see total flux 30 MHz, rates reaching 5 kHz/mm <sup xmlns:mml="http://www.w3.org/1998/Math/MathML"...