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Paul Scherrer Institut PSI OVGA 405 5232 Villigen PSI, Switzerland http://www.psi.ch
Contact Mr Dr. Malte Hildebrandt +41 56 310 21 45
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Paul Scherrer Institut PSI

Die schwache Seite des Protons

Myonenexperimente am Paul Scherrer Institut bestätigen Voraussagen des Standardmodells der Elementarteilchen

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Ein internationales Forschungsteam hat mit grosser Genauigkeit bestimmt, wie das Proton an der schwachen Wechselwirkung – eine der vier fundamentalen Kräfte der Natur – teilhat. Die Ergebnisse bestätigen die theoretischen Voraussagen des Standardmodells der Teilchenphysik. In dem Experiment wurde beobachtet, mit welcher Wahrscheinlichkeit Myonen von Protonen eingefangen werden – ein Prozess, der von der schwachen Wechselwirkung bestimmt wird. Das Experiment wurde am Paul Scherrer Institut PSI durchgeführt, dem einzigen Ort weltweit, an dem genügend Myonen erzeugt werden, damit es in einer realistischen Zeit durchgeführt werden kann. Die Forscher haben darauf geachtet, nicht nur die zahlreichen technischen Fehlerquellen auszuschliessen, sondern auch
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