LHCb detects two new mesons
DOI: 10.1063/PT.5.028327
New Scientist : In 2006, the BaBar experiment at the SLAC National Accelerator Laboratory found an energy peak in particle collision data but was unable to determine the cause. Now, the LHCb experiment at CERN has determined that the peak was caused by the creation of two new mesons —particles formed from a quark and an antiquark held together by the strong force . The two particles, named DS3*(2860)– and DS1*(2860)–, are both formed by the combination of a charm antiquark and a strange quark. Significantly, DS3*(2860)– is the first particle that includes a charm quark that has a spin of 3. This unique property gives a clear picture of the meson’s configuration, which could provide a new source of information about the strong force.
