IPFS News Link • Science, Medicine and Technology
Newly Discovered 'Tetraquark' Fuels Quantum Feud
• http://www.wired.com, By Natalie WolchoverMost believed tetraquarks were a new kind of miniature molecule — essentially, two orbiting mesons, each made of one regular quark and one antimatter quark, or antiquark — while a smaller contingent saw them as stand-alone particles in which the two quarks and two antiquarks overlapped in the same small volume of space.