Two-photon decay of a light scalar quark-antiquark state

Details Two-photon decay of a light scalar quark-antiquark state Two-photon decay of a light scalar quark-antiquark state

2008-04-20

arxiv.org/abs/0804.3216v1

AIPConf.Proc.1030:153-158,2008

Physics

High Energy Physics

High Energy Physics - Phenomenology

Presented at the workshop SCADRON 70 "Scalar Mesons and Related Topics" February 11-16, 2008, at IST in Lisbon, Portugal. 6 pa

Scientific paper

10.1063/1.2973491

The two-photon decay of a light scalar quarkonium is evaluated in a local and
a nonlocal approaches. It is shown that the two-photon decay, driven by a
triangle quark-loop diagram, is smaller than 1 keV for a mass below 0.7 GeV.

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