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arXiv · hep-ph/0008066

Isospin breaking exposed in f0(980)- a0(980) mixing

F. E. Close·A. Kirk
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Abstract

We suggest that mixing between the f0(980) and a0(980), due to their dynamical interaction with the nearby KKbar thresholds, can give rise to a significantly enhanced production rate of a0(980) relative to a2(1320) in pp -> ps (eta pi0) pf as xF -> 0. The peaking of the cross section as phi -> 0 should also occur. We show that such effects are seen in data and deduce that the f0(980) - a0(980) mixing intensity is 8 +/- 3 %.

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F. E. Close, A. Kirk. 2000-08-08. Isospin breaking exposed in f0(980)- a0(980) mixing. https://doi.org/10.1016/s0370-2693(00)00951-5

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