Particle Discovered At Cern

Add a comment April 30th, 2012  
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Particle Discovered At Cern, Physicists from the University of Zurich have discovered a previously unknown particle composed of three quarks in the Large Hadron Collider (LHC) particle accelerator.

A new baryon could thus be detected for the first time at the LHC. The baryon known as Xi_b^* confirms fundamental assumptions of physics regarding the binding of quarks.

In particle physics, the baryon family refers to particles that are made up of three quarks.

Quarks form a group of six particles that differ in their masses and charges. The two lightest quarks, the so-called “up” and “down” quarks, form the two atomic components, protons and neutrons.

All baryons that are composed of the three lightest quarks (“up,” “down” and “strange” quarks) are known.

Only very few baryons with heavy quarks have been observed to date. They can only be generated artificially in particle accelerators as they are heavy and very unstable.

In the course of proton collisions in the LHC at CERN, physicists Claude Amsler, Vincenzo Chiochia and Ernest Aguil? from the University of Zurich’s Physics Institute managed to detect a baryon with one light and two heavy quarks.

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