#Researchers discover first ‘open-charm’ tetraquark
“#Researchers discover first ‘open-charm’ tetraquark” The band associated with the new tetraquark transforming into a D− and a K at a mass of 2.9 GeVc2. Credit: HCb Collaboration/CERN The LHCb experiment at CERN has developed a penchant for finding exotic combinations of quarks, the elementary particles that come together to give us composite particles such…