Kavli Affiliate: T. Higuchi
| First 5 Authors: Belle II Collaboration, Belle II Collaboration, , ,
| Summary:
We search for the $e^+ e^- to gamma chi_bJ$ ($J$ = 0, 1, 2) processes at
center-of-mass energies $sqrts$ = 10.653, 10.701, 10.746, and 10.804 GeV.
These data were collected with the Belle II detector at the SuperKEKB collider
and correspond to 3.5, 1.6, 9.8, and 4.7 fb$^-1$ of integrated luminosity,
respectively. We set upper limits at the 90% confidence level on the Born
cross sections for $e^+ e^- to gamma chi_bJ$ at each center-of-mass energy
$sqrts$ near 10.746 GeV. The upper limits at 90% confidence level on the
Born cross sections for $e^+ e^- to gamma chi_b1$ are significantly
smaller than the corresponding measured values for $e^+e^-toomegachi_b1$
and $e^+e^-topi^+pi^-Upsilon(2S)$ at $sqrts$ = 10.746 GeV.
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