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hep-ex2026
Observation of the decays and
Belle, Belle II Collaborations, : +403
We report the first observation of the decays and , with significances of $6.4\,…
hep-ex2026
Improved measurement of Born cross sections for and ( = 0, 1, 2) at Belle and Belle II
Belle, Belle II Collaborations, : +424
We study the processes and ( = 0, 1, 2) at center-of-mass energies from 10.73 to 11.02 GeV using a $142.5\,\mathr…