Study of the $J/\psi$ Decay Into Five Pions

Augustin, J.E.; Cosme, G.; Couchot, F.; Fulda, F.; Grosdidier, G.; Jean-Marie, B.; Lepeltier, V.; Mane, F.; Szklarz, G.; Bisello, D.

doi:10.1016/0550-3213(89)90208-3

Study of the $J/\psi$ Decay Into Five Pions

DM2

Collaboration

•

J.E. Augustin
(
- Orsay, LAL
)

Dec, 1988

19 pages

Published in:

Nucl.Phys.B 320 (1989) 1-19

Published: 1989

DOI:

10.1016/0550-3213(89)90208-3

PDG:

{{\mathit f}_{{{0}}}{(980)}}

MASS

Report number:

LAL-88-05

reference search109 citations

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Abstract: (Elsevier)

A high statistics study of the J/ ψ → π + π − π + π − π 0 decay is performed from the 8.6 million J/ψ's produced by the DM2 experiment at DCI. ϱ- and ω-associated production is evidenced and branching ratios for ϱa 2 (1320), inclusive ωπ + π − , ωf 2 (1270) and b 1 ± (1235) π ∓ dynamics are given. In the ωπ + π − final state a bump is observed at a low (π + π − ) mass and a possible ωf 0 (975) contribution is discussed.

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): NONLEPTONIC DECAY
NONLEPTONIC DECAY: J/PSI(3100)
J/PSI(3100): BRANCHING RATIO
RHO(770)

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