The $$\pi \eta $$ interaction and $$a_0$$ resonances in photon–photon scattering

We revisit the information on the two lightest $$a_0$$ a 0 resonances and S -wave $$\pi \eta $$ π η scattering that can be extracted from photon–photon scattering experiments. For this purpose we construct a model for the S -wave photon–photon amplitudes which satisfies analyticity properties, two-c...

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Veröffentlicht in:	The European physical journal. C, Particles and fields Particles and fields, 2020-05, Vol.80 (5), Article 436
Hauptverfasser:	Lu, Junxu, Moussallam, B.
Format:	Artikel
Sprache:	eng
Schlagworte:	High Energy Physics - Phenomenology Physics
Online-Zugang:	Volltext
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