Abstract
We search for the and light tetraquark states with masses up to in and decays with data samples of million and million events, respectively, collected with the Belle detector. No significant signals are observed in any of the studied production modes, and 90% credibility level (C.L.) upper limits on their branching fractions in and decays are obtained. The inclusive branching fractions of the and decays into final states with are measured to be and . The measured branching fraction is measured to be , and 90% C.L. upper limits for the branching fractions are found to be and , respectively. For , the branching fraction is measured to be . All results reported here are the first measurements for these modes.
8 More- Received 5 November 2017
DOI:https://doi.org/10.1103/PhysRevD.96.112002
© 2017 American Physical Society