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

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

Image : SNF
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

Image : G. Cuomo
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

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

At the Physics Institute at the University of Bern, Armin Fehr and his colleagues have built the future 'Inner Tracker' of the ATLAS detector on a 1 to 1 scale. In the tube on the left, the proton-proton collisions take place. The dark red box shows one of the regions where the Optoboards will be located.
Every second fifty terabits of data

From 2026, the performance of the large-scale experiments at the European particle physics laboratory, CERN, in Geneva will be significantly increased. The preliminary work for the upgrade of the large

In November 2018, a jury included the Geneva-based company Securaxis in the funding program of the "Business Incubation Centre of CERN Technologies" in PARK INNOVAARE in Villigen (AG). Photo (from left to right): Glenn Meleder (CEO Securaxis), Benno Rechsteiner (CEO PARK INNOVAARE), and Aurélie Pezous (Knowledge Transfer Officer at CERN).
The Innovation Park “PARK INNOVAARE” in Villigen (AG) supports start-up companies in the field of accelerator technology.

CERN in Geneva is the leading particle physics laboratory worldwide. Large particle accelerators based on the most innovative technologies are used there for fundamental research. One year ago, the innovation

Jürg Pfister, Secrétaire général de la SCNAT
De quels grands équipements la recherche suisse a-t-elle besoin?

La Confédération a chargé les Académies suisses des sciences d'établir des feuilles de route pour les infrastructures de recherche dans les différents domaines scientifiques. Ces feuilles de route servent à

Anna Soter and her experiment at PSI. Photo: private
Anna Soter Wants to use Exotic Atoms for a Subtle Experiment

Gravity accompanies us in our everyday lives—from early morning, when we get out of bed, to late evening, when we drop tiredly onto the mattress. Although no other force of

Logo of the IYPT 2019 - International Year of Periodic Table of the Chemical Elements
IYPT 2019 - Année internationale du tableau périodique des éléments chimiques

Le tableau périodique des éléments chimiques est l'une des réalisations les plus importantes de la science, qui rend compte non seulement de l'essence de la chimie, mais aussi de la

L'observatoire du Sphinx, Station de recherche de haute montagne du Jungfraujoch
Top of Europe: les honneurs pour un site de recherche d'exception perché à 3450 mètres d'altitude

À une époque où beaucoup de pays d'Europe se refermaient sur eux-mêmes, la Suisse ouvrait une station de recherche à vocation internationale au Jungfraujoch. Plusieurs prix Nobel y ont travaillé.

Vue aérienne de la vallée de Frick dans le canton d'Argovie
La SCNAT crée le plus grand réseau de connaissances sur le paysage

Etalement urbain, déclin de la diversité des paysages et de la biodiversité, paysages de montagne marqués par le changement climatique: afin de mieux protéger les paysages suisses avec l’implication de

Günther Dissertori is Professor for Particle Physics at the Swiss Federal Institute of Technology in Zurich.
The FCC provides science for almost a century

In spring 2020 the European particle physics community will decide on a new European Strategy highlighting the strategic long-term goals in this important field of fundamental research. In December 2018

APPEC Contribution to the European Particle Physics Strategy
APPEC Contribution to the European Particle Physics Strategy

APPEC strongly supports and encourages the prospects of an even stronger synergy between Astroparticle Physics and Cosmology with Particle Physics. Areas of synergy between the above domains are identified: dark

Dr. James Sinclair observes on four computer screens at the University of Bern, whether the 7000 km away MicroBooNE experiment on Fermilab runs smoothly.
James Sinclair designs a novel neutrino detector at the University of Bern

Neutrinos are electrically neutral and very light elementary particles, which interact only weakly with other matter and are therefore difficult to observe. From 2025, a new neutrino experiment in the