Light scalar mesons in QCD
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Stephan Narison
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Article
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2009
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Elsevier Science
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English
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I present a mini-review of the masses and couplings of the bare (unmixed) light scalar mesons : qq, (qq)(qq), (qq)(qq), gg from QCD spectral sum rules (QSSR) and low-energy theorems (LET) which we compare with recent lattice calculations when available. Some unbiased comments on the different scenar