The low lying scalar resonances in the D 0 decays intoKs0and f 0 (500), f 0 (980), a 0 (980)
نویسندگان
چکیده
منابع مشابه
f 0 ( 500 ) , f 0 ( 980 ) , and a 0 ( 980 ) production in the χ c 1 → ηπ + π − reaction
We study the χc1 → ηπ+π− decay, paying attention to the production of f0(500), f0(980), and a0(980) from the final state interaction of pairs of mesons that can lead to these three mesons in the final state, which is implemented using the chiral unitary approach. Very clean and strong signals are obtained for the a0(980) excitation in the ηπ invariant mass distribution and for the f0(500) in th...
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Meson loops in the f 0 (980) and a 0 (980) radiative decays into ρ, ω Abstract. We calculate the radiative decay widths of the a0(980) and f0(980) scalar mesons into ργ and ωγ considering the dynamically generated nature of these scalar resonances within the realm of the Chiral Unitary Approach. The main ingredient in the evaluation of the radiative width of the scalar mesons are the loops comi...
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The complementarity between Chiral Perturbation Theory and the Linear Sigma Model is exploited to study π0π0 production in φ radiative decays, where the effects of the f0(980) scalar resonance, and those of its more controversial σ(500) partner, should manifest via the φ → K+K−(γ) → π0π0γ decay chain. The recently reported data on φ → π0π0γ coming from the VEPP-2M e+e− collider in Novosibirsk a...
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Ratios of coupling constants for these decays are compared with qq̄ predictions and Jaffe’s qq̄ model. In both models, the predicted ratio g(κ→ Kπ)/g(σ → ππ) is much too small. Also, for qq̄, the predicted ratio g(κ → Kη)/g(κ → Kπ) is much larger than observed. Both models fail for g(f0 →KK)/g (a0 →KK). This ratio requires that f0 has a dominantKK component. It arises naturally because the f0 pole...
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ژورنال
عنوان ژورنال: Physics Letters B
سال: 2015
ISSN: 0370-2693
DOI: 10.1016/j.physletb.2015.02.006