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Saturday, February 11, 2012

Better understanding of why meson particles disappear

The PHENIX detector at the Relativistic Heavy Ion Collider.
Credit: 2012 Brookhaven National Laboratory
(PhysOrg) - For several years, physicists at the Relativistic Heavy Ion Collider (RHIC) at Brookhaven National Laboratory (BNL), USA, have studied an unusual state of matter called the quark–gluon plasma, which they believe mimics the hot, dense particle soup that existed immediately after the big bang. Now, the PHENIX collaboration at RHIC reports findings about a particle called the J/ψ meson that will help physicists distinguish the properties of the quark–gluon plasma (QGP) from those of normal matter. 
in PhysOrg

Watch the table of mesons here,
and video from CERN (Measurement of Bs mixing parameters from Bs → J/&psi φ decays at CDF and D∅).
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