Inclusive study of bottomonium production in association with an $\eta $ meson in $e^+e^-$ annihilations near $\varUpsilon (5S)$

Tamponi, U.; Guido, E.; Mussa, R.; Adachi, I.; Aihara, H.; Al Said, S.; Asner, D.M.; Atmacan, H.; Aulchenko, V.; Aushev, T.

doi:10.1140/epjc/s10052-018-6086-4

Inclusive study of bottomonium production in association with an $\eta$ meson in $e^+e^-$ annihilations near $\varUpsilon (5S)$

Belle

Collaboration

•

U. Tamponi
(
- INFN, Turin
)

Mar 8, 2018

10 pages

Published in:

Eur.Phys.J.C 78 (2018) 8, 633

Published: Aug 9, 2018

e-Print:

1803.03225 [hep-ex]

DOI:

10.1140/epjc/s10052-018-6086-4

PDG:

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

\rightarrow

{{\mathit \eta}}{{\mathit \Upsilon}_{{{J}}}{(1D)}}

Report number:

BELLE-PREPRINT-2018-01,
KEK-PREPRINT-2017-60

Experiments:

KEK-BF-BELLE

View in:

ADS Abstract Service

reference search20 citations

Citations per year

Abstract: (Springer)

We study bottomonium production in association with an

\eta

meson in

e^+e^-

annihilations near the

\varUpsilon (5S)

, at a centre-of-mass energy of

\sqrt{s}=10.866

GeV. The results are based on the 121.4 fb

^{-1}

data sample collected by the Belle experiment at the asymmetric-energy KEKB collider. Only the

\eta

meson is reconstructed and the missing-mass spectrum of

\eta

candidates is investigated. We observe the

e^+e^-\rightarrow \eta \varUpsilon _J(1D)

process and find evidence for the

e^+e^-\rightarrow \eta \varUpsilon (2S)

process, while no significant signals of

\varUpsilon (1S)

,

h_b(1P)

, nor

h_b(2P)

are found. Cross sections for the studied processes are reported.

Note:

Submitted to EPJ-C

bottomonium: production
inclusive reaction
spin: symmetry
heavy quark: symmetry
eta: production
Iizuka-Okubo-Zweig rule
cross section: measured
electron positron: annihilation
Upsilon(10870)
Upsilon(10020)

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Inclusive study of bottomonium production in association with an η\eta η meson in e+e−e^+e^-e+e− annihilations near Υ(5S)\varUpsilon (5S)Υ(5S)

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Inclusive study of bottomonium production in association with an $\eta$ meson in $e^+e^-$ annihilations near $\varUpsilon (5S)$