Search for the $e^+ e^{\mathstrut -} \to \eta_b(1S)\omega$ and $e^+ e^{\mathstrut -} \to \chi_{b0}(1P)\omega$ processes at $\sqrt{s} = 10.745$ GeV

Abstract We search for the $e^+e^-\to\eta_b(1S)\omega$ and $e^+e^-\to\chi_{b0}(1P)\omega$ 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 $9.8\,\mathrm{fb}^{-1}$. We reconstruct $\omega\to\pi^+\pi^-\pi^0$ decays and use the $\omega$ 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.
Tags
Working group Quarkonium
Principal authors @  Roman Mizuk, Pavel Oskin
Reference Phys.Rev.D 109, 072013 (2024), DOI: 10.1103/PhysRevD.109.072013
Document BELLE2-PUB-PH-2023-014
Links arXiv:2312.13043, Inspire, PRD
Bibtex 
@article{Belle-II:2023twj,
    author = "Adachi, I. and others",
    collaboration = "Belle-II",
    title = "{Search for the e+e-{\textrightarrow}{\ensuremath{\eta}}b(1S){\ensuremath{\omega}} and e+e-{\textrightarrow}{\ensuremath{\chi}}b0(1P){\ensuremath{\omega}} processes at s=10.745{\,}{\,}GeV}",
    eprint = "2312.13043",
    archivePrefix = "arXiv",
    primaryClass = "hep-ex",
    reportNumber = "Belle II Preprint 2023-018, KEK Preprint 2023-36",
    doi = "10.1103/PhysRevD.109.072013",
    journal = "Phys. Rev. D",
    volume = "109",
    number = "7",
    pages = "072013",
    year = "2024"
}