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

References in corpus (6)

• Observation of anomalous Upsilon(1S)pi+pi- and Upsilon(2S)pi+pi- production near the Upsilon(5S) resonance
• Decay constants of the heavy-light mesons from the field correlator method
• Bottomonium dipion transitions
• Di-Pion Decays of Heavy Quarkonium in the Field Correlator Method
• Υ(5S) decays into BB and BBπ
• Higher ${\eta }_c(nS)$ and ${\eta }_b(nS)$ mesons

Cited by in corpus (4)

• Higher Charmonia and X,Y,Z states with Screened Potential
• Bottomonium dipion transitions
• Single eta production in heavy quarkonia: breakdown of multipole expansion
• Single eta production in heavy quarkonia transitions