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.
2024
109
7
072013-1
072013-9
https://journals.aps.org/prd/pdf/10.1103/PhysRevD.109.072013
quarkonium, spectroscopy, electron-positron collider
I. Adachi , L. Aggarwal , H. Ahmed , H. Aihara , N. Akopov , A. Aloisio , N. Anh Ky , D. M. Asner , H. Atmacan , T. Aushev , V. Aushev , M. Aversano ...espandi
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2318/2070799
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