#Cern experts discover new particle pentaquark Scientists at Cern's Large hadron collider on Tuesday announced the discovery of a new class of exotic subatomic particles called the pentaquarks. Pentaquark was predicted first to exist in the 1960s but, much like the Higgs boson particle before it, the particle eluded science for decades until its detection at the LHC.""The pentaquark is not just any new particle, "said LHCB spokesperson Guy Wilkinson.""It represents a way to aggregate quarks, namely the fundamental constituents of ordinary protons and neutrons, in a pattern that has never been observed before in over 50 years of experiments, "said Wilkinson.""Studying its pro8p8erties may allow us to unde8r8stand better how ordinary matter, the protons and neutrons from which we're all made, is constituted,"he said. Understanding of the structure of matter was revolutionized in 1964 when United states physicist Murray Gell-Mann proposed that a category of particles known as baryons, which includes protons and neutrons, are comprised of three fractionally charged objects called quarks, and that another category, mesons, are formed of quark-antiquark pairs. Gell-Mann was awarded the Nobel prize in physics for this work in 1969. This quark model also allows the existence of other quark composite states such as pentaquarks composed of four quarks and an antiquark k
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