We search for the eþe− → ηbð1SÞω and eþe− → χb0ð1PÞω processes at a center-of-mass energy of 10.745 GeV, which is close to the peak of the ϒð10753Þ 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 ω → πþπ−π0 decays and use the ω 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 χb0ð1PÞω limit is the result of a combination of this analysis and a previous search using full reconstruction.
Search for the e+e- →ηb (1S)ω and e+e- →χb0 (1P)ω processes at s =10.745 GeV
F. Bianchi;S. Das;M. Destefanis;M. Maggiora;S. Marcello;G. Pinna Angioni;S. Spataro;
2024-01-01
Abstract
We search for the eþe− → ηbð1SÞω and eþe− → χb0ð1PÞω processes at a center-of-mass energy of 10.745 GeV, which is close to the peak of the ϒð10753Þ 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 ω → πþπ−π0 decays and use the ω 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 χb0ð1PÞω limit is the result of a combination of this analysis and a previous search using full reconstruction.| File | Dimensione | Formato | |
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PhysRevD.109.072013.pdf
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