Published January 1, 2024
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Search for the <i>e</i><SUP>+</SUP> <i>e</i><SUP>-</SUP> → η<i><sub>b</sub></i> (1<i>S</i>)ω and <i>e</i><SUP>+</SUP> <i>e</i><SUP>-</SUP> → χ<sub><i>b</i>0</sub>(1<i>P</i>)ω processes at √<i>s</i>=10.745 GeV
Description
We search for the e(+) e(-) -> eta(b)(1S)omega and e(+) e(-) -> chi(b0)(1P)omega processes at a center-of-mass energy of 10.745 GeV, which is close to the peak of the Upsilon(10753) state. We use data collected by the Belle II experiment during a special run, corresponding to an integrated luminosity of 9.8 fb(-1). We reconstruct omega -> pi(+) pi(-) pi(0) decays and use the. meson's recoil mass to search for the signals. We do not find evidence for either process, and set upper limits on the corresponding Born-level cross sections of 2.5 pb and 7.8 pb, respectively, at the 90% confidence level. The chi(b0)(1P)omega limit is the result of a combination of this analysis and a previous search using full reconstruction.
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