Structure analysis of the f(J) (1710) in the radiative decay J / psi ---> gamma K+ K- - INSPIRE

DataBETA

Structure analysis of the f(J) (1710) in the radiative decay J / psi ---> gamma K+ K-

BES

Collaboration

•

J.Z. Bai
(
- Beijing, Inst. High Energy Phys. and
- Hefei, CUST and
- Shandong U.
)

1996

4 pages

Published in:

Phys.Rev.Lett. 77 (1996) 3959-3962

DOI:

10.1103/PhysRevLett.77.3959

PDG: PRODUCED IN

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

ANNIHILATION AND PARTICLE DECAYS

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Abstract: (APS)

The data on J/ψ→γK+K− from the BES experiment at the Beijing electron-positron collider have been analyzed. We find two resonances in the 1.7 GeV region which were identified as fJ(1710): a scalar with mass 1781±8−31+10(MeV) and width 85±24−19+22(MeV), and a tensor with mass 1696±5−34+9(MeV) and width 103±18−11+30(MeV). The resulting branching ratios B(J/ψ→γfJ)B(fJ→K+K−) are ( 0.8±0.1−0.1+0.3)10−4 for J=0 and ( 2.5±0.4−0.4+0.9)10−4 for J=2, respectively.

electron positron: colliding beams
colliding beams: electron positron
electron positron: annihilation
annihilation: electron positron
J/psi(3100): electroproduction
electroproduction: J/psi(3100)
J/psi(3100): radiative decay
radiative decay: J/psi(3100)
mass spectrum: (K+ K-)
(K+ K-): mass spectrum

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