Chiral Symmetry and $\psi^{\prime} \to \psi \pi \pi$ Decay

Brown, Lowell S.; Cahn, Robert N.

doi:10.1103/PhysRevLett.35.1

Chiral Symmetry and $\psi^{\prime} \to \psi \pi \pi$ Decay

Lowell S. Brown
(
- Fermilab and
- Washington U., Seattle
)
,
Robert N. Cahn
(
- Washington U., Seattle
)

Apr, 1975

11 pages

Published in:

Phys.Rev.Lett. 35 (1975) 1

DOI:

10.1103/PhysRevLett.35.1

Report number:

FERMILAB-PUB-75-033-THY,
FERMILAB-PUB-75-033-T

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Abstract: (APS)

Unbroken chiral symmetry (with a vanishing σ term) relates the ψ′→ψππ decay amplitude to three basic parameters. Two of these parameters put strong angular correlations in the amplitude which, apparently, are not observed. Taking these two parameters to vanish, we obtain an isotropic decay which is strongly peaked in the region where the invariant mass of the ππ system is large.

PSI(3700): DECAY
PI: FINAL STATE
FINAL STATE: PI
J/psi(3100)
DECAY: WIDTH
WIDTH: DECAY
SYMMETRY: CHIRAL
SYMMETRY: BROKEN
ANGULAR CORRELATION
PI PI: MULTIPLE SCATTERING

References(7)

Figures(0)

Experimental Observation of a Heavy Particle $J$

E598

Collaboration

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)

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- Phys.Rev.Lett. 33 (1974) 1649 (erratum)
•
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Pion-Pion Scattering, Current Algebra, Unitarity, and the Width of the Rho Meson

Lowell S. Brown
(
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)
,
Robert L. Goble
(
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)

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•
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Chiral Symmetry and ψ′→ψππ\psi^{\prime} \to \psi \pi \piψ′→ψππ Decay

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