Article from the website iflscience.com.
For almost five decades, scientists have theorized that a significant particle may exist beyond the realms of our current knowledge of subatomic physics, but proving this has been difficult.
This is no longer the case, as scientists now say that they have found the much sought-after pentaquark, first predicted to exist in the 1960s. After 50 years of searching, the particle has turned up at the LHCb experiment at CERN’s Large Hadron Collider.
Most significantly of all, the discovery indicates that there may be a new type of matter – albeit one that lives for one billion trillion trillionth of a second before it decays.
Click on this link to read more http://www.iflscience.com/physics/new-particle-discovery-lhc-could-reveal-what-we-are-made.