pi-pi S-Wave Interaction and 0++ Particles

1996/11/05 by B. S. Zou, Zou, B. S.
Physics and Astronomy · #FOS: Physical sciences #High Energy Physics - Phenomenology (hep-ph) #hep-ph

paper · pdf · doi:10.48550/arxiv.hep-ph/9611235

5 pages incluing 1 postscript figure

arxiv created 1996/11/05 · arxiv updated 2009/11/30

Abstract

From a re-analysis of pi+ pi- -> pi+ pi- and pi+ pi- -> K K data, we found for pi-pi S-wave interaction below 2 GeV, sigma(400), f0(980), f0(1500) and f0(1780) clearly show up. f0(1370) can be included with a very small branching ratio to pi-pi. f0(1300) and f0(1590) are not real resonances and are due to interference effects of above resonances. The sigma(400) with a width about 700 MeV is mainly produced by t-channel exchange force.

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