Observation of $e^+e^-\to\pi^+\pi^-\pi^0\chi_{b1,2}(1P)$ and search for $e^+e^-\to\phi\chi_{b1,2}(1P)$ at $\sqrt{s}=$ 10.96—11.05 GeV - INSPIRE

DataBETA

Observation of $e^+e^-\to\pi^+\pi^-\pi^0\chi_{b1,2}(1P)$ and search for $e^+e^-\to\phi\chi_{b1,2}(1P)$ at $\sqrt{s}=$ 10.96—11.05 GeV

Belle

Collaboration

Jun 16, 2018

9 pages

Published in:

Phys.Rev.D 98 (2018) 9, 091102

Published: Nov 16, 2018

e-Print:

1806.06203 [hep-ex]

DOI:

10.1103/PhysRevD.98.091102

PDG:

{{\mathit \Upsilon}{(10860)}}

\rightarrow

{{\mathit \chi}_{{{bJ}}}{(1P)}}{{\mathit \pi}^{+}}{{\mathit \pi}^{-}}{{\mathit \pi}^{0}}

Experiments:

KEK-BF-BELLE

View in:

reference search10 citations

Citations per year

Abstract: (APS)

We report searches for the processes e+e-→π+π-π0χbJ and e+e-→ϕχbJ (J=1, 2) based on data samples collected by the Belle experiment at the KEKB collider. We report the first observation of the process e+e-→(π+π-π0)non-ωχb1 and first evidence for e+e-→ωχbJ in the vicinity of the ϒ(11020) resonance, with center-of-mass energies from 10.96 to 11.05 GeV. The significances for (π+π-π0)non-ωχb1 and ωχbJ are greater than 5.3σ and 4.0σ, respectively. We also investigate the energy dependence of the e+e-→π+π-π0χbJ cross section, but we cannot determine whether the contributions are from the ϒ(10860) and ϒ(11020) resonances or nonresonant continuum processes. The signals for e+e-→ϕχbJ are not significant, and the upper limits of the Born cross sections at the 90% confidence level are 0.7 and 1.0 pb for e+e-→ϕχb1 and ϕχb2, respectively, for center-of-mass energies from 10.96 to 11.05 GeV.

Note:

8pages, 3 figures

electron positron: annihilation
electron positron: colliding beams
error: statistical
Upsilon(10870): electroproduction
Upsilon(11020): electroproduction
chi mesons: electroproduction
Upsilon(11020): branching ratio: measured
energy dependence
BELLE
KEK-B

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Figures(6)

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