Photoproduction of scalar mesons on protons and nuclei
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We study the photoproduction of scalar mesons close to the threshold of f_0(980) and a_0(980) using a unitary chiral model. Peaks for both resonances show up in the invariant mass distributions of pairs of pseudoscalar mesons. A discussion is made on the photoproduction of these resonances in nuclei, which can shed light on their nature, a subject of continuous debate.
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Marco Rubio, Eugenio Oset Báguena, Eulogio Toki, Hiroshi 1999 Photoproduction of scalar mesons on protons and nuclei Physical Review C 60 1 015202
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