Search for $XYZ$ states in $\Upsilon(1S)$ inclusive decays - INSPIRE

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Search for $XYZ$ states in $\Upsilon(1S)$ inclusive decays

Belle

Collaboration

•

C.P. Shen
(
- BeiHang U.
)

May 3, 2016

11 pages

Published in:

Phys.Rev.D 93 (2016) 11, 112013

Published: Jun 22, 2016

e-Print:

1605.00990 [hep-ex]

DOI:

10.1103/PhysRevD.93.112013

PDG:

{{\mathit \Upsilon}{(1S)}}

\rightarrow

{{\mathit J / \psi}{(1S)}}

Report number:

BELLE-PREPRINT-2016-04,
KEK-PREPRINT-2016-3,
BELLE-2016-04,
KEK-2016-3

Experiments:

KEK-BF-BELLE

View in:

reference search12 citations

Citations per year

Abstract: (APS)

The branching fractions of the ϒ(1S) inclusive decays into final states with a J/ψ or a ψ(2S) are measured with improved precision to be B(ϒ(1S)→J/ψ+anything)=(5.25±0.13(stat)±0.25(syst))×10-4 and B(ϒ(1S)→ψ(2S)+anything)=(1.23±0.17(stat)±0.11(syst))×10-4. The first search for ϒ(1S) decays into XYZ states that decay into a J/ψ or a ψ(2S) plus one or two charged tracks yields no significant signals for XYZ states in any of the examined decay modes, and upper limits on their production rates in ϒ(1S) inclusive decays are determined.

Note:

10 pages, 7 figures, 3 tables

electron positron: annihilation
electron positron: colliding beams
psi(3685)
J/psi(3100)
Upsilon(9460): branching ratio
decay modes
tracks
meson: exotic
meson: hybrid
meson: molecule

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Figures(35)

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