Measurement of $e^+e^- \to \gamma\chi_{cJ}$ via initial state radiation at Belle - INSPIRE

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Measurement of $e^+e^- \to \gamma\chi_{cJ}$ via initial state radiation at Belle

Belle

Collaboration

•

Y.L. Han
(
- Beijing, Inst. High Energy Phys.
)

Jun 17, 2015

9 pages

Published in:

Phys.Rev.D 92 (2015) 1, 012011

Published: Jul 20, 2015

e-Print:

1506.05229 [hep-ex]

DOI:

10.1103/PhysRevD.92.012011

PDG:

{{\mathit \psi}{(4160)}}

\rightarrow

{{\mathit e}^{+}}{{\mathit e}^{-}}

Experiments:

KEK-BF-BELLE

View in:

reference search13 citations

Citations per year

Abstract: (APS)

The process e+e-→γχcJ (J=1, 2) is studied via initial state radiation using 980 fb-1 of data at and around the ϒ(nS) (n=1, 2, 3, 4, 5) resonances collected with the Belle detector at the KEKB asymmetric-energy e+e- collider. No significant signal is observed except from ψ(2S) decays. Upper limits on the cross sections between s=3.80 and 5.56 GeV are determined at the 90% credibility level, which range from a few pb to a few tens of pb. We also set upper limits on the decay rate of the vector charmonium [ψ(4040), ψ(4160), and ψ(4415)] and charmoniumlike [Y(4260), Y(4360), and Y(4660)] states to γχcJ.

Note:

Accepted by PRD

14.40.Pq
13.25.Gv
13.66.Bc
electron positron: annihilation
radiation: initial-state interaction
BELLE
decay rate
charmonium: electroproduction
psi(4160)
psi(4415)

References(26)

Figures(7)

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