particle physics

Les neutrinos et leur importance en astrophysique

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Les neutrinos et leur importance en astrophysique

EN BREF Les neutrinos sont des particules subatomiques presque sans masse. Ils n’ont pas de charge électrique, rendant leur identification complexe. Ils agissent comme messagers des phénomènes cosmiques. Les neutrinos proviennent d’événements énergétiques tels que les supernovae. Ils permettent une meilleure compréhension des phénomènes astrophysiques. Ces particules sont plus abondantes que la matière noire. L’astronomie … Read more

Antimatter: myth or reality?

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L'antimatière : mythe ou réalité ?

IN BRIEF Existence of antimatter: tiny quantities in the universe Particles and antiparticles: fundamental symmetry Question of matter-antimatter imbalance after the Big Bang Absence of antimatter: one of the greatest enigmas of the universe Production of antimatter in the laboratory, notably at CERN Exorbitant cost of antimatter: a precious and rare substance Properties of antimatter: … Read more

The physics behind particle accelerators

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La physique derrière les accélérateurs de particules

IN BRIEF Particle accelerators: essential devices for exploring nuclear physics and particle physics. CERN: houses the largest circular accelerator in the world. Use in various fields: fundamental research and science outreach. Current limitations: high cost, insufficient power, and fragility of existing accelerators. Past and ongoing experiments: exploring elementary particles. Operation: acceleration of particle beams for … Read more

Major discoveries of CERN and their significance

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Les découvertes majeures du CERN et leur signification

IN SHORT 70 years of discoveries at CERN Discovery of W and Z bosons in 1983 Revolution in particle detection with the multi-wire proportional chamber in 1968 Significant impact on electroweak theory The LHC as a fundamental exploration tool Advances in particle physics and their societal application Celebrations and new research projects in 2024 The … Read more

Current approaches to detect dark matter

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Les approches actuelles pour détecter la matière noire

IN BRIEF Detection of dark matter: innovative approach based on Josephson junctions. Exploration of gravitational waves to identify dark matter. Search for axions, potential dark matter candidates, through their conversion into photons. Clear strategies: make, watch become undone, or look for its tremors. Study of neutron stars, potential keys in detecting this invisible matter. Analysis … Read more

Elementary particles: quarks, leptons, and bosons

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Les particules élémentaires : quarks, leptons et bosons

IN BRIEF Elementary particles: fundamental units of matter. Quarks: components of protons and neutrons, grouped into hadrons. Leptons: particles such as electrons, with no color charge. Standard model: theoretical framework encompassing particles and their interactions. Bosons: mediators of fundamental forces (e.g., the Higgs boson). Classification of particles into fermions (quarks and leptons) and bosons. Particle … Read more