"This could be an indication of physics beyond the Standard Model," Seng clarifies.īut it is not completely certain. However, if this is done for different decay paths of kaons, different results are obtained for Vus. Its value can be extracted mathematically from measurement data of experiments. Small discrepancy between measurement and theoryĪ parameter of the Standard Model called Vus describes this decay. They are not stable, but decay on average after a few billionths of a second. These particles are a component of cosmic rays emanating from stars and galaxies. An increasing number of experimental findings also point in this direction, for example those concerning the decay of the so-called kaons. Many researchers therefore assume that the Standard Model is not yet the ultimate answer, but must be supplemented or even fundamentally changed. But the existence of these mysterious components cannot be deduced from the Standard Model." "For example, most researchers assume that 95 percent of our universe is made up of dark matter and dark energy, which we cannot detect directly with our measuring instruments. ![]() Chien-Yeah Seng, a postdoctoral researcher at the Helmholtz Institute for Radiation and Nuclear Physics at the University of Bonn. "However, there are also questions that this theory cannot answer," explains Dr. The Model also explains what forces act between these elementary particles, and allows us to understand many physical phenomena. The Standard Model of particle physics describes the building blocks that make up the world-us humans, the grains of sand on the beach, the ocean water in which we cool ourselves, but also the sun that burns down on us.
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