a 0 (980)− f 0 (980) mixing in χ c1 → π 0 f 0 (980)→ π 0 π + π − and χ c1 → π 0 a 0 (980)→ π 0 π 0 η
نویسندگان
چکیده
منابع مشابه
Analysis on the f 0 ( 600 ) and f 0 ( 980 ) Resonances in γγ → π + π − , π 0 π 0 Processes
We estimate the di-photon coupling of f0(600), f0(980) and f2(1270) resonances in a couple channel dispersive approach. Especially we estimate the di-photon coupling of the third sheet pole located near K̄K threshold, denoted as f III 0 (980). It is argued that this third sheet pole may be originated from a couple channel Breit-Wigner description of the f0(980) resonance. The f0(600) di-photon c...
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We estimate the di-photon coupling of f0(600), f0(980) and f2(1270) resonances in a coupled channel dispersive approach. The f0(600) diphoton coupling is also reinvestigated using a single channel T matrix for ππ scattering with better analyticity property, and it is found to be significantly smaller than that of a q̄q state. Especially we also estimate the di-photon coupling of the third sheet ...
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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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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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ژورنال
عنوان ژورنال: Physics Letters B
سال: 2017
ISSN: 0370-2693
DOI: 10.1016/j.physletb.2017.10.061