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Measurements of the ϒ(10860) and ϒ(11020) resonances via σ(e+eϒ(nS)π+π)

D. Santel et al. (Belle Collaboration)
Phys. Rev. D 93, 011101(R) – Published 14 January 2016
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Abstract

We report new measurements of the total cross sections for e+eϒ(nS)π+π (n=1, 2, 3) and e+ebb¯ from a high-luminosity fine scan of the region s=10.6311.05  GeV with the Belle detector. We observe that the ϒ(nS)π+π spectra have little or no nonresonant component and extract from them the masses and widths of ϒ(10860) and ϒ(11020) and their relative phase. We find M10860=(10891.1±3.21.7+0.6)MeV/c2 and Γ10860=(53.75.65.4+7.1+1.3)MeV and report first measurements M11020=(10987.52.52.1+6.4+9.0)MeV/c2, Γ11020=(611920+9+2)MeV, and ϕ11020ϕ10860=(1.0±0.40.1+1.4)rad.

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  • Received 5 January 2015

DOI:https://doi.org/10.1103/PhysRevD.93.011101

© 2016 American Physical Society

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  1. Physical Systems
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Vol. 93, Iss. 1 — 1 January 2016

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