Study of e+e- => B(*) B(*)-bar pi+- at sqrt(s)=10.866 GeV

Abstract

We report the analysis of the three-body e+e- => B B-bar pi, B B*-bar pi, and B* B*-bar pi processes, including the first observation of the Zb+-(10610) =>[B B*-bar+c.c.]+- and Zb+-(10650) => [B*B*-bar]+- transitions. We measure visible cross sections for the three-body production of sigma_vis(e+e- => [B B*-bar+c.c.]+-pi-+=(11.2+-1.0(stat.)+-1.2(syst.)) pb and sigma_vis(e+e- => [B*B*-bar]+-pi-+)=(5.61+-0.73(stat.)+-0.66(syst.)) pb and set a 90% C.L. upper limit of sigma_vis(e+e- => [BB-bar]+-pi-+)<2.1 pb. The results are based on a 121.4 1/fb data sample collected with the Belle detector at a center-of-mass energy near the Y(5S) peak.

8 pages, 2 figures

References in corpus (11)

• Observation of two charged bottomonium-like resonances in Y(5S) decays
• Quest for precision in hadronic cross sections at low energy: Monte Carlo tools vs. experimental data
• Heavy quark spin structure in Z_b resonances
• Born-Oppenheimer Approximation for the XYZ Mesons
• Tetraquark Interpretation of the Charged Bottomonium-like states Z_b^+-(10610) and Z_b^+-(10650) and Implications
• $Z_b(10610)$ and $Z_b(10650)$ structures produced by the initial single pion emission in the ${\rm Y}(5S)$ decays
• Amplitude analysis of e+e- => Y(nS)pi+pi- at sqrt(s)=10.865 GeV
• Hadron interaction with heavy quarkonia
• Exotic mesons with hidden bottom near thresholds
• Study of B -> D** l nu with full reconstruction tagging
• Measurement of Y(5S) decays to B^0 and B^+ mesons

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• 50 Years of Quantum Chromodynamics
• Diquark Correlations in Hadron Physics: Origin, Impact and Evidence
• Explaining the Many Threshold Structures in the Heavy-Quark Hadron Spectrum
• The XYZ states revisited
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• Some decay properties of hidden-charm pentaquarks as baryon-meson molecules
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• Two-pion exchange for coupled-channel scattering of two heavy mesons
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• $D$ wave bottomonia production from $Z_b^{(\prime )}$ decay
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