Strong decays and dipion transitions of Upsilon(5S)

Abstract

Dipion transitions of ${\rm Y}(nS)$ with $n=5,n^{\prime }=1,2,3$ are studied using the Field Correlator Method, applied previously to dipion transitions with $n=2,3,4$ The only two parameters of effective Lagrangian were fixed in that earlier study, and total widths ${\Gamma }_{\pi \pi }(5,n^{\prime })$ as well as pionless decay widths ${\Gamma }_{BB}(5S),{\Gamma }_{B{B}^{\ast }}(5S),{\Gamma }_{B^{\ast }{B}^{\ast }}(5S)$ and ${\Gamma }_{KK}(5,n^{\prime })$ were calculated and are in a reasonable agreement with experiment. The experimental $\pi \pi$ spectra for $(5,1)$ and (5,2) transitions are well reproduced taking into account FSI in the $\pi \pi$.

16 pages, 6 figures

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• The Hadronic Transitions $Upsilon(2S)\to Upsilon(1S)$
• Υ(5S) decays into BB and BBπ
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• The nature of the 'knee' in the cosmic ray energy spectrum
• Relation between Scattering and Production Amplitudes - concerning sigma Particle in pi pi System -
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• Charged bottomonium-like states $Z_b(10610)$ and $Z_b(10650)$ and the ${\rm Y}(5S)\to {\rm Y}(2S){\pi }^{+}{\pi }^{-}$ decay
• Study of the Dependence of Direct Soft Photon Production on the Jet Characteristics in Hadronic Z^0 Decays
• Dipion invariant mass distribution of the anomalous ${\rm Y}(1S){\pi }^{+}{\pi }^{-}$ and ${\rm Y}(2S){\pi }^{+}{\pi }^{-}$ production near the peak of ${\rm Y}(10860)$
• Computation of the quarkonium and meson-meson composition of the ${\rm Y}(nS)$ states and of the new ${\rm Y}(10753)$ Belle resonance from lattice QCD static potentials
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• Bottomonium-like states: physics case for energy scan above the $B\bar{B}$ threshold at Belle-II
• Measurement of Y(5S) decays to B^0 and B^+ mesons
• Anomalous Soft Photons in Hadron Production
• Relativistic theory of string breaking in QCD
• Hadron physics potential of future high-luminosity B-factories at the Upsilon(5S) and above
• Study of $I=0$ bottomonium bound states and resonances in $S$, $P$, $D$ and $F$ waves with lattice QCD static-static-light-light potentials
• Single eta production in heavy quarkonia: breakdown of multipole expansion
• Microscopic study of the string breaking in QCD
• $B^{(\ast )}{\bar{B}}^{(\ast )}$ intermediate state contribution to ${\rm Y}(4S,5S)\to {\eta }_b+\gamma$ radiative decay
• On the question of quark confinement in the Abelian U(1) QED gauge interaction
• Measurement of the $e^{+}{e}^{-}\to B_s^0{\bar{B}}_s^{0}X$ cross section in the energy range from $10.63$ to $11.02$ GeV using inclusive $D_s^{\pm }$ and $D^0$ production
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• Recent Results on Charmonia- and Bottomonia-like Particles at Belle
• Exotic hadrons associated with $b$-quark