15 papers
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…
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 , $…
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}^{…
Search for ( = 0, 1, 2) near GeV at Belle II
Belle II Collaboration, M. Abumusabh, I. Adachi +399
We search for the ( = 0, 1, 2) processes at center-of-mass energies = 10.653, 10.701, 10.746, and 10.804 GeV. These data were collected with the…
Charged-hadron identification at Belle II
Belle II Collaboration, I. Adachi, H. Ahmed +408
The Belle II experiment's ability to identify particles critically affects the sensitivity of its measurements. We describe Belle II's algorithms for identifying charged particles…
Search for a Dark Higgs Boson Produced in Association with Inelastic Dark Matter at the Belle II Experiment
Belle II Collaboration, I. Adachi, L. Aggarwal +437
Inelastic dark matter models that have two dark matter particles and a massive dark photon can reproduce the observed relic dark matter density without violating cosmological limit…