Germany: physicists have discovered a new species pentaquark




Employees of German physics research center DESY claim they have proved experimentally the existence of another kind of pentaquark. Is the title of a short-lived elementary particle formed of five quarks. Russian theorists have predicted its existence 8 years ago, but this prediction was confirmed by experiments of Japanese nuclear physicists only in 2002

The first experimentally discovered pentaquark contained four ordinary quarks, such as those that are part of the protons and neutrons, and one strange quark. New pentaquark was found in a study of particles in collisions occurred in the circular accelerator accelerated protons and electrons. This particle contains one charmed quark and four ordinary.

Battery News, 22.03.2004 14:48
Source: CNews

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