Evidence that the a0(980) and f0(980) are not elementary particles
Copyright policy )Evidence that the a0(980) and f0(980) are not elementary particles
We study the interesting problem of whether it is possible to distinguish composite from elementary particles. In particular we generalize a model-independent approach of S. Weinberg to the case of unstable particles. This allows us to apply our formalism to the case of the a0(980) and f0(980) resonances and to address the question whether these particles are predominantly genuine, confined quark states (of $\bar q q$ or $qq\bar q\bar q$ structure) or governed by mesonic components.
15 pages, 4 Figures
- Forschungszentrum Jülich Germany
- Helmholtz Association of German Research Centres Germany
- Institute of Theoretical and Experimental Biophysics Russian Federation
- Institute for Theoretical and Experimental Physics Russian Federation
Nuclear and High Energy Physics, a0(980): hadronic decay, quark antiquark: bound state, meson: model, K anti-K: bound state, a0(980) --> eta pi, FOS: Physical sciences, f0(980), meson: wave function, f0(980) --> 2pi, a0(980), coupled channel, f0(980): hadronic decay, renormalization, K anti-K: scattering amplitude, numerical calculations: interpretation of experiments, High Energy Physics - Phenomenology, High Energy Physics - Phenomenology (hep-ph), bound state: (2quark 2antiquark), meson: hadron spectroscopy, info:eu-repo/classification/ddc/530, pseudoscalar meson: pair production
Nuclear and High Energy Physics, a0(980): hadronic decay, quark antiquark: bound state, meson: model, K anti-K: bound state, a0(980) --> eta pi, FOS: Physical sciences, f0(980), meson: wave function, f0(980) --> 2pi, a0(980), coupled channel, f0(980): hadronic decay, renormalization, K anti-K: scattering amplitude, numerical calculations: interpretation of experiments, High Energy Physics - Phenomenology, High Energy Physics - Phenomenology (hep-ph), bound state: (2quark 2antiquark), meson: hadron spectroscopy, info:eu-repo/classification/ddc/530, pseudoscalar meson: pair production
selected citations These citations are derived from selected sources.This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).397 popularity This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.Top 1% influence This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).Top 1% impulse This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.Top 10%
Citations provided by BIP!Popularity provided by BIP!