4 papers
hep-ex2026
Study of at Belle II
Belle II Collaboration, M. Abumusabh, I. Adachi +404
The bottomonium spectrum, consisting of bound states of a quark and an anti- quark, provides an excellent laboratory for probing quantum chromodynamics in the non-perturbati…
hep-ex2026
A search for feebly-interacting particles in decays with missing energy at Belle
Belle, Belle II Collaborations, : +406
We present a search for an invisible hidden-sector particle , produced in and decays, where , $…
hep-ex2025
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\,\mathrm{fb}^{…
hep-ex2025
First measurements of the branching fractions for the decay modes and and search for the decay using Belle and Belle II data
Belle, Belle II Collaborations, : +321
Using data samples of 988.4 fb and 427.9 fb collected with the Belle and Belle II detectors, we present a study of the singly Cabibbo-suppressed decays $Ξ_c^{0} \to Λ…