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An unexpected new subatomic particle has been discovered in Illinois's Fermilab atom smasher, scientists announced this week.The new particle may break all known rules for creating matter, say the researchers who created the oddity.Y(4140)—as the new particle has been dubbed—couldn't have formed through either of the two known models for matter creation. Researchers aren't even sure what Y(4140) is made of.It's long been accepted that six different "flavors" of particles called quarks combine to form larger subatomic particles.In one method, a quark pairs with one of its opposites, an antiquark, to create a type of matter called a meson. In the second method, three quarks gather to form baryons, such as protons and neutrons.(Related: "Bulk of Missing 'Normal' Matter Found in Cosmic Web.")"The surprise about this new particle that we found is that it's not predicted by any of these rules," said Jacobo Konigsberg of the University of Florida."From what we know, if you tried to put a set of quarks or antiquarks together you couldn't build these particles."
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