An Ambiguity in Interpretation of Data on the S* (980) Resonance for the Case of Strong Coupling of S* (980) With the $K \bar{K}$ Channel

Achasov, N.N.; Devyanin, S.A.; Shestakov, G.N.

doi:10.1016/0370-2693(81)91062-5

An Ambiguity in Interpretation of Data on the S* (980) Resonance for the Case of Strong Coupling of S* (980) With the $K \bar{K}$ Channel

1981

5 pages

Published in:

Phys.Lett.B 102 (1981) 196-200

Published: 1981

DOI:

10.1016/0370-2693(81)91062-5

View in:

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Abstract: (Elsevier)

It is shown that for the case of strong coupling of the S ∗ -resonance with the K K -channel a theoretical ambiguity in the interpretation of the S ∗ -phenomenon data appears. As a result we come to the conclusion that there are no serious grounds to give credence to the generally accepted behaviour of the I =0 S-wave phase shift for the reaction ππ → ππ above the K K - threshold .

INTERPRETATION OF EXPERIMENTS
PI PI: ELASTIC SCATTERING
ELASTIC SCATTERING: PI PI
S*(980)
PARTIAL WAVE ANALYSIS
COUPLING: K ANTI-K S*(980)
K ANTI-K S*(980): COUPLING
PI PI: INELASTIC SCATTERING
INELASTIC SCATTERING: PI PI
NUMERICAL CALCULATIONS

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