D+(s0)(2317)-D-0(2308) mass difference as evidence for tetraquarks
We argue that the anomalously small mass difference between the D-s0(+)(2317) and the recently observed D-0(2308) (Belle) state is the first smoking gun experimental evidence of their tetraquark [cq((qq) over bar)] structure. The recently reported D-sJ(+)(2632) (SELEX) state completes the low-lying nonexotic tetraquark spectrum, as predicted by t Hoofts instanton-induced effective quark interaction.
Извор:Physical Review Letters, 2005, 94, 16
ISSN: 0031-9007 (print)