Jiansen Lu
A new particle is discovered by LHC
December 28th 2011 19:22
ATLAS experiment at the Large Hadron Collider discovered a new particle called Chi_b(3P). Chi_b(3P) is a bottom-antibottom quark bound state with orbital angular momentum L=1, total spin S=1 and radial quantum number n=3, while those with radial quantum number n=1 and n=2 are already discovered. Chi_b(3P) is predicted by theorists many years ago, but was not observed before. The discovery of Chi_b(3P) is a great way to test theoretical calculation.
Standard Model of Matter
We can not see a single quark. We can only study quarks via their bound states and combination. Through studying Chi_b(3P), we will have a better understanding of strong force, which binds quarks together. Will Higgs boson be discovered after the discovery of Chi_b(3P)? Let us wait and let time tell us.
Video: CERN: The Standard Model Of Particle Physics
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