Radiative Decay of $J/\psi$ Into $\eta(1430)$ and Nearby States

Radiative decays of Jψ into K+K−π0, KS0K±π∓, ηπ+π−, and ργ have been studied in the η(1430) mass range from the 8.6×106Jψ's produced in the DM2 experiment at the Orsay e+e− storage ring (DCI). The η(1430) is observed in both KS0K±π∓ and K+K−π0 channels. A three-body decay-angular analysis of the whole signal supports a JP=0− assignment. A substantial KK*(892) dynamics is present whereas the significance of the a0(980)π contribution cannot be evaluated. The η(1430) is not observed in the ηππ channel which shows a peak in the f1(1285)η(1275) mass range and a new state at 1398 MeV/c2, ≃50 MeV/c2 wide. An a0(980)π intermediate-state contribution is present at least in the latter state. Finally, the low-statistics ργ final state gives no evidence of η(1430) production.

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)
J/psi(3100): branching ratio
eta(1440): mass

References(27)

Figures(0)

The Mass of the Glueball

Gyan Bhanot
(
- Brookhaven
)

- Phys.Lett.B 101 (1981) 95-97
•
DOI:
- 10.1016/0370-2693(81)90498-6

Low Mass Glueballs in the Meson Spectrum

John F. Donoghue
(
- Massachusetts U., Amherst and
- MIT, LNS
)
,
K. Johnson
(
- MIT, LNS
)
,
Bing An Li
(
- SLAC and
- Beijing, Inst. High Energy Phys.
)

- Phys.Lett.B 99 (1981) 416-420
•
DOI:
- 10.1016/0370-2693(81)90560-8

Glueballs: Their Spectra, Production and Decay

J.Joseph Coyne
(
- NIST, Wash., D.C.
)
,
Paul M. Fishbane
(
- Virginia U.
)
,
Sydney Meshkov
(
- NIST, Wash., D.C.
)

- Phys.Lett.B 91 (1980) 259,
- Orbis Scientiae 1980:43
•
DOI:
- 10.1016/0370-2693(80)90445-1

Observation of the Radiative Transition psi ---> gamma E(1420)

D.L. Scharre
(
- SLAC and
- LBL, Berkeley and
- UC, Berkeley
)
,
G. Trilling
(
- SLAC and
- LBL, Berkeley and
- UC, Berkeley
)
,
G.S. Abrams
(
- SLAC and
- LBL, Berkeley and
- UC, Berkeley
)
,
M.S. Alam
(
- SLAC and
- LBL, Berkeley and
- UC, Berkeley
)
,
C.A. Blocker
(
- SLAC and
- LBL, Berkeley and
- UC, Berkeley
)

et al.

- Phys.Lett.B 97 (1980) 329-332
•
DOI:
- 10.1016/0370-2693(80)90612-7

Observation of a Pseudoscalar State at 1440-MeV in J/psi Radiative Decays

et al.

- Phys.Rev.Lett. 49 (1982) 259,
- Phys.Rev.Lett. 50 (1983) 219 (erratum)
•
DOI:
- 10.1103/PhysRevLett.50.219

Nonperturbative Potential Model for Light and Heavy Quark anti-Quark Systems

D.P. Stanley
(
- Florida State U.
)
,
D. Robson
(
- Florida State U.
)

- Phys.Rev.D 21 (1980) 3180-3196
•
DOI:
- 10.1103/PhysRevD.21.3180

Mesons in a Relativized Quark Model with Chromodynamics

S. Godfrey
(
- Toronto U.
)
,
Nathan Isgur
(
- Toronto U.
)

- Phys.Rev.D 32 (1985) 189-231,
- Phys. Rev. D32 ( 1985) 189-231
•
DOI:
- 10.1103/PhysRevD.32.189

- Nuovo Cim.A 50 393

Observation and Quantum Numbers Determination of the E(1420) Meson in pi- p Interactions at 3.95-GeV/c

CERN-College de France-Madrid-Stockholm

Collaboration

•

C. Dionisi
(
- CERN
)

et al.

- Nucl.Phys.B 169 (1980) 1-19
•
DOI:
- 10.1016/0550-3213(80)90249-7

Spin Parity Analysis of the E Meson Centrally Produced in the Reactions pi+ p ---> pi+ (K0(L) K+- K-+) p and p p ---> p (K0(L) K+- pi-+) p at 85-GeV/c

Athens-Bari-Birmingham-CERN

Collaboration

•

T.A. Armstrong
(
- CERN
)

et al.

- Phys.Lett.B 146 (1984) 273,
•
DOI:
- 10.1016/0370-2693(84)91033-5

A Possible Solution to the $e$ / Iota Puzzle

David O. Caldwell
(
- UC, Santa Barbara
)

- Mod.Phys.Lett.A 2 (1987) 771
•
DOI:
- 10.1142/S0217732387000963

Partial Wave Analysis of the $K + \bar{K}0 \pi^-$ System

et al.

- Phys.Rev.Lett. 61 (1988) 1557,
- Phys.Rev.Lett. 62 (1989) 1577 (erratum)
•
DOI:
- 10.1103/PhysRevLett.61.1557

A Spin Parity Analysis of the F(1) (1285) and F(1) (1420) Mesons Centrally Produced in the Reaction $p p \to p$ (f) ( $K^0_S K^\pm \pi^\mp$ ) at $p(s$ ) at 300-{GeV}/ $c$

WA76

Collaboration

•

T.A. Armstrong
(
- CERN
)

et al.

- Phys.Lett.B 221 (1989) 216-220
•
DOI:
- 10.1016/0370-2693(89)91501-3

The $K^0(s$ ) $K^0(s$ ) $\pi^0$ System Produced in $\pi^- p$ Interactions at 21.4-{GeV}/ $c$

et al.

- Phys.Rev.D 40 (1989) 693
•
DOI:
- 10.1103/PhysRevD.40.693

Evidence for Two Pseudoscalar Resonances of $\eta \pi^+ \pi^-$ System in the $D(1285)$ and $e$ / Iota Regions

et al.

- Phys.Rev.Lett. 57 (1986) 1296
•
DOI:
- 10.1103/PhysRevLett.57.1296

The Decay Mode of a Glueball Iota (1440)

K. Senba
(
- Ehime U.
)
,
M. Tanimoto
(
- Bielefeld U.
)

- Lett.Nuovo Cim. 35 (1982) 295-299
•
DOI:
- 10.1007/BF02754741

Electromagnetic Decay of Glueballs

John F Donoghue
(
- Massachusetts U., Amherst
)

- Phys.Rev.D 30 (1984) 114
•
DOI:
- 10.1103/PhysRevD.30.114

Branching Ratio Predictions for the Iota (1440)

William F. Palmer
(
- Ohio State U.
)
,
Stephen S. Pinsky
(
- Ohio State U.
)

- Phys.Rev.D 27 (1983) 2219
•
DOI:
- 10.1103/PhysRevD.27.2219

Production, Decay, and Mixing Models of the Iota Meson

William F. Palmer
(
- Ohio State U.
)
,
Stephen S. Pinsky
(
- Ohio State U.
)
,
Carl M. Bender
(
- Washington U., St. Louis
)

- Phys.Rev.D 30 (1984) 1002
•
DOI:
- 10.1103/PhysRevD.30.1002

Dm2: A Magnetic Detector for the Orsay Storage Ring DCI

et al.

- Phys.Scripta 23 (1981) 623-633,
- Phys. Scr. 23 ( 1981) 623-633 and Orsay Lab. Accel. Lineaire - L.A.L. 80-16 (80,REC.JUL.) 42p
•
DOI:
- 10.1088/0031-8949/23/4B/004