La physique des particules explore les briques élémentaires de la matière et leurs interactions, qui déterminent la structure et les propriétés de la matière dans l'univers. Le portail web rend ces recherches fascinantes compréhensibles pour un public intéressé.en plus

Image : ESO, R. Fosburyen plus
Collision proton-proton (LHC, CERN)

La physique moderne repose sur un élégant « Modèle Standard de la physique des particules », une théorie quantique des champs basée sur trois symétries et une brisure de symétrie. Cette théorie décrit et explique magnifiquement tous les résultats expérimentaux obtenus jusqu'à présent. Avec la découverte de la particule de Higgs en 2012 au "Large Hadron Collider" du CERN, la dernière pièce manquante du Modèle Standard a été confirmée expérimentalement. Les expériences au CERN et dans d'autres laboratoires internationaux continuent maintenant à sonder la validité et les limites du Modèle Standard dans des domaines toujours plus vaste. Cependant, pour une compréhension globale des lois de la nature une théorie au-delà du Modèle Standard est nécessaire, qui devrait inclure la gravitation et expliquer la présence de la matière noire et de l'énergie sombre dans l'univers.

Événements, Annonces, Publications

Louise Harra à Cap Canaveral en Floride
Notre étoile en ligne de mire

"J'ai une passion pour le soleil". C'est avec cette devise que Louise Harra intitule son compte Twitter. Effectivement, cette native d'Irlande du Nord a jusqu'à présent entièrement consacré sa vie

Image : Privat
Atmosphäre der Erde
Atmospheric Chemistry and Physics ACP Award 2021

At the occasion of the virtual Swiss Geoscience meeting in Geneva in November 2021, the ACP Award for Atmospheric Research was presented to Kristýna Kantnerová for her PhD thesis “Analysis

Image : NASA
Alexander Groos / Enrico Mattea
Au sommet de la recherche de haute altitude: deux jeunes chercheurs reçoivent le Prix de Quervain 2021

Découverte du plus ancien village de haute montagne connu, situé à près de 3 500 mètres d’altitude, et fonte des neiges et glaciers au Mont Rose : les jeunes chercheurs

Nobel Prize
Der Beitrag der Nobelpreisträger für Physik

Der Nobelpreis für Physik 2021 wurde zur Hälfte an die beiden Klimawissenschaftler Syukuro Manabe und Klaus Hasselmann verliehen, «für das physikalische Modellieren des Klimas der Erde, die quantitative Analyse von

Dr Anne Verhamme, professeur adjoint d'astronomie à l'Université de Genève. La photo montre Anne Verhamme devant le superordinateur de l'Université de Genève, qu'elle utilise pour calculer ses prédictions.
Une carrière universitaire près de chez soi

Anne Verhamme enseigne en tant que professeure assistante d'astronomie à l'Université de Genève et étudie comment les galaxies libèrent de l'énergie dans l'univers. La Française de 42 ans est également

Born in Catania, Sicily, Gabriel Cuomo went to Trieste for his master's degree, to Lausanne as a doctoral student, and finally to New York as a postdoc. The picture shows Cuomo during a visit to Switzerland.
Gabriel Cuomo receives the CHIPP Prize 2021

Last year, Gabriel Cuomo successfully defended his PhD thesis in theoretical particle physics at École Polytechnique Fédérale de Lausanne (EPFL). For this academic achievement, the Sicilian-born physicist, who now lives

Equipe de suisse aux olympiades internationales de physique 2021
Les Suisses ont su se démarquer dans le cadre des Olympiades internationales de physique 2021

Lors des Olympiades internationales de physique (IPhO), qui se sont déroulées du 17 au 24 juillet, des jeunes de plus de 70 pays ont résolu des épreuves portant sur les

XENON
Leading Xenon Researchers unite to build next-generation Dark Matter Detector

The XENON/DARWIN and LUX-ZEPLIN collaborations have now joined forces to work together on the design, construction, and operation of a new, single, multi-tonne scale xenon observatory to explore dark matter.

Prof. Laura Baudis (Uni. of Zurich) at the TEDxCERN event 2016
Rendre l'invisible visible

La recherche de la matière noire est l'un des "sujets brûlants" actuels de la physique des particules élémentaires. Récemment, de puissants détecteurs ont été mis au point, qui pourraient permettre

Prof. Martin Hoferichter has held a professorship at the University of Bern since 2020, funded by the Eccellenza programme of the Swiss National Science Foundation.
Various results shake up the Standard Model

At the beginning of April, the US research laboratory Fermilab published a new result for the magnetic dipole moment of the muon. The result caused a broad media response because

Prof. Ilaria Zardo enseigne la physique avec passion
«Prof de sport ?» – «Non, physicienne !»

En Italie, les collégiennes terminant la maturité gymnasiale choisissent d'étudier la physique beaucoup plus naturellement que ce n'est actuellement le cas en Suisse. Ilaria Zardo fait partie de ces jeunes

The FASER detector at CERN, in a tunnel 80 metres below the Earth's surface. The detector is aligned in such a way that it detects those particles that are created in proton-proton collisions in the ATLAS experiment and fly straight on from there without deflection.
FASER - the 'ForwArd Search ExpeRiment' at the CERN particle accelerator

When people talk about CERN, they inevitably think of the large-scale experiments at the Large Hadron Collider (LHC). But the European Laboratory for Particle Physics has even more to offer:

Comparison between RK measurements. The measurements by the BaBar and Belle collaborations combine B+→K+ℓ+ℓ− and B0→KS0ℓ+ℓ− decays, where ℓ is a lepton. The previous LHCb measurements and the new result [4], which supersedes them, are also shown.
Exciting news from CERN experiment with Swiss participation

Almost ten years ago, the European Laboratory for Particle Physics (CERN) made headlines with the discovery of the Higgs particle. These days, the LHCb experiment at CERN has published results

Martin Pohl: Particles, Fields, Space-Time. From Thomson’s Electron to Higgs’ Boson. CRC Press 2021.
Martin Pohl packs a century of particle physics between two book covers.

Until his retirement in 2017, Martin Pohl was a physics professor at the University of Geneva and worked on particle physics research projects for almost half a century. Drawing on

Photon Science Roadmap for Research Infrastructures 2025–2028 by the Swiss Photon Community
Photon Science Roadmap

This community roadmap summarizes a survey of the Swiss large-scale infrastructure requirements in the broad field of photon science for the years 2025–2028, drawing from the current situation both in

Neutron Science Roadmap for Research Infrastructures 2025–2028 by the Swiss Neutron Science Community
Neutron Science Roadmap

This community roadmap presents a broad overview of the current status of neutron science in Switzerland and derives a set of recommendations for future developments. It is the result of

This device was used at the Paul Scherrer Institute to produce pionic helium atoms for research purposes
Particle physicists create artificial atoms for research purposes

In the laboratories of modern physics the elementary components of matter are studied. To do this, scientists sometimes build artificial atoms to help them understand the laws of matter. A

Claudia Merlassino, CHIPP Prize 2020
Claudia Merlassino wins the CHIPP Prize 2020

Claudia Merlassino was born in Genoa, studied physics in Milan and completed her doctorate at the University of Bern in October 2019, since then she has been doing research at

Prof. Rainer Wallny (ETHZ)
CHIPP President Prof. Rainer Wallny on the updated "European Strategy for Particle Physics

On June 19th CERN Council adopted the update of the "European Strategy for Particle Physics 2020". This document updates an earlier strategy paper that was adopted by the Council in

Beamline for schools
Geneva school wins “Beamline for Schools” 2020 competition

The delta+ is a type of baryon, the family of sub-atomic particles to which the more well-known proton and neutron belong. A team of physics enthusiasts at the International School

Claudia Merlassino, CHIPP Prize 2020
Claudia Merlassino wins the CHIPP Prize 2020

Claudia Merlassino was born in Genoa, studied physics in Milan and completed her doctorate at the University of Bern in October 2019, since then she has been doing research at

PET image of brains without (top) and with (bottom) amyloid deposits. The deposits can be recognized by the red colouring, even with reduced spatial resolution (centre and right).
The start-up Positrigo uses findings from particle physics for the early diagnosis of Alzheimer's disease

Positron emission tomography (PET) helps medical doctors to detect cancer and many other diseases. A team of researchers led by ETH Professor Günther Dissertori is working on a new generation

CHART logo
Swiss research initiative CHART works on particle accelerators of the future

FCC - these three letters stand for the vision of a new ring accelerator that could be built at the European particle physics laboratory CERN in Geneva. With this long-term

Physicist Dr. Marina Battaglia is a senior researcher at the FHNW Institute for Data Science and works on the STIX project.
University of Applied Sciences Northwestern Switzerland researches astroparticles of the Sun

Scientists at the University of Applied Sciences and Arts Northwestern Switzerland (FHNW) have spent around ten years building the Spectrometer / Telescope for Imaging X-rays (STIX). Since 10 February, the

Artistic representation of a proton decay. Illustration: Hyper-Kamiokande Collaboration
Visiting the Japanese Super-Kamiokande detector (part 2)

In deep underground tunnels of former mines near the Japanese Alps, teams of scientists with Swiss participation are researching various types of elementary particles. Over the next few years, powerful

A 1.7 km long tunnel leads to the neutrino detector Super-Kamiokande. Photo: B. Vogel
Visiting the Japanese Super-Kamiokande detector (part 1)

Hardly any elementary particle occurs more frequently in the universe than the elusive neutrino. The investigation of the almost massless tiny particle is a focus of current elementary particle physics.

Fernerkundung, geophysikalische Prospektion und Ausgrabungen am Sirkeli Höyük
Fernerkundung, geophysikalische Prospektion und Ausgrabungen am Sirkeli Höyük (TR)

Graben oder nicht graben? Das ist oft die Frage! Die Entscheidung müssen Archäologen aber nicht dem Zufall überlassen. Geophysikalische Prospektionen und die Fernerkundung erlauben sehr weit gehende Einsichten in den

Matteo Fadel: Prix Schläfli 2019 Physik
Matteo Fadel – Des enchevêtrements paradoxaux

Un labyrinthe de miroirs, un pot brillant, d’innombrables câbles et écrans numériques. Si vous rendez visite à Matteo Fadel sur son lieu de travail à l’Université de Bâle, il vous

Pokale Prix Schläfli
La SCNAT récompense les quatre meilleures thèses de doctorat en sciences naturelles

Le contrôle de la quantité de phosphate dans les cellules, les processus impliqués dans les catalyseurs, l'utilisation des sols à Madagascar, ou encore un paradoxe de la physique quantique –

XENON1T installation in the underground hall of Laboratori Nazionali del Gran Sasso. The three storey building houses various auxiliary systems. The cryostat containing the LXeTPC is located inside the large water tank next to the building.
The XENON1T experiment in the Italian Gran Sasso Laboratory has measured the most protracted radioactive decay ever

Radioactive waste from nuclear power plants can take a long time to decay. For plutonium-239 the half-life - that is the time until half of the atoms of a sample