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Observation of two charged bottomonium-like resonances

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arxiv 1105.4583 v3 pith:5TKYOMNZ submitted 2011-05-23 hep-ex

Belle Collaboration: I.Adachi , et al. This is my paper · ORCID
classification hep-ex
keywords upsilonchargedgammaobservationstatesstructuresanalysisassociation
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We report the observation of two narrow structures at 10610MeV/c^2 and 10650MeV/c^2 in the pi^{\pm}Upsilon(nS) (n=1,2,3) and pi^{\pm}h_b(mP) (m=1,2) mass spectra that are produced in association with a single charged pion in Upsilon(5S) decays. The measured masses and widths of the two structures averaged over the five final states are M_1=10608.4\pm2.0MeV/c^2, Gamma_1=15.6\pm2.5MeV and M_2=10653.2\pm1.5MeV/c^2, Gamma_2=14.4\pm3.2MeV. Analysis favors quantum numbers of I^G(J^P)=1^+(1^+) for both states. The results are obtained with a 121.4fb^{-1} data sample collected with the Belle detector near the Upsilon(5S) resonance, at the KEKB asymmetric-energy e+e- collider.

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  1. Two-pion exchange for coupled-channel scattering of two heavy mesons

    hep-ph 2024-11 accept novelty 7.0 of 10

    The authors derive the next-to-leading-order two-pion-exchange potentials for heavy meson and heavy antimeson scattering and show the results are close to simple momentum-dependent contact terms.

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