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Fundamentals of Nature

Researchers at the Paul Scherrer Institute PSI are looking for answers to essential questions concerning the underlying structures of matter and the fundamental principles of nature. They study the composition and properties of elementary particles – the smallest building blocks of matter – or investigate the structure of biological molecules and how they perform their function. The knowledge gathered in this way opens up new approaches to finding solutions in science, medicine and technology.

Find out more at Overview Fundamentals of Nature

23 November 2011
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Erkenntnis aus dem Nichts

Media Releases Particle physics Research with muons Fundamentals of Nature

Zwei Experimente mit massgeblicher Beteiligung von Forschern des Paul Scherrer Instituts PSI liefern wichtige Ergebnisse bei der Suche nach der richtigen Beschreibung der Welt der kleinsten Teilchen. In den Experimenten haben die Physiker nach sehr seltenen Teilchenzerfällen gesucht. In beiden Fällen konnte der gesuchte Zerfall nicht beobachtet werden wodurch bestimmte Modelle der Teilchenphysik ausgeschlossen werden konnten.This news release is only available in German.

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This is a text from the PSI media archive. The contents may be out-of-date.
25 January 2011
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How strong is the weak force?

Media Releases Particle physics Research with muons Fundamentals of Nature

A new measurement of the muon lifetime à the most precise determination of any lifetime à provides a high-accuracy value for a crucial parameter determining the strength of weak nuclear force. The experiments were performed by an international research team at the accelerator facility of the Paul Scherrer Institute.

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This is a text from the PSI media archive. The contents may be out-of-date.
8 July 2010
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Protons - smaller than we thought

Media Releases Particle physics Research with muons Fundamentals of Nature

The proton à one of the smallest building-blocks of all matter à is even smaller than had previously been assumed. This discovery is the result of experiments carried out at the Paul Scherrer Institute (PSI) in Villigen, Switzerland, by an international research team.

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This is a text from the PSI media archive. The contents may be out-of-date.
3 March 2010

Technology from the Paul Scherrer Institute detects proton collisions at unprecedented levels of energy

Media Releases Particle physics Fundamentals of Nature

CERN has been able to take the first measurements of collisions between the highest-energy particles ever generated. These collisions were performed at CERN's new LHC accelerator and recorded with the CMS Experiment, which involved a key component (the barrel pixel detector) contributed by the Paul Scherrer Institute in collaboration with Swiss Universities. The first LHC operation in Dezember 2009 has now resulted in a first particle physics publications of the CMS experiment. This is after a remarkable short time , given the compexity and the size of this gigantic experiment with over 3000 physicists and engineers from close to 40 countries.

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This is a text from the PSI media archive. The contents may be out-of-date.
1 December 2009

Service to the scientific community

Research Using Synchrotron Light Large Research Facilities Research Using Neutrons Particle physics Research with muons Fundamentals of Nature

Neutrons, synchrotron light and muons are very useful for researchers in a variety of disciplines. Using these probes, we can determine the structure of crystals, they help us understand magnetic processes, or they can reveal the structures of biological materials. However, producing these probes is so difficult that most research groups will not have a neutron, muon or synchrotron light at their own scientific centre.

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01/2023

5232 — The magazine of the Paul Scherrer Institute

01/2023
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