Publication: Light scalar susceptibilities and the pi(0)-eta mixing
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2011
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Torres Andrés, R.
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Amer Inst Physics
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Abstract
We have performed a thermal analysis of the light scalar susceptibilities in the context of SU(3)-Chiral Perturbation Theory to one loop taking into account the QCD source of isospin breaking (IB), i.e corrections coming from m(u) not equal m(d). We find that the value of the connected scalar susceptibility in the infrared regime and below the critical temperature is entirely dominated by the pi(0) - eta mixing, which leads to model-independent O(epsilon(0)) corrections, where epsilon similar to m(d) - m(u), in the combination chi(uu) - chi(ud) of flavour breaking susceptibilities.
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© Amer Inst Physics.
Conference on Quark Confinement and the Hadron Spectrum. (9. 2010. Madrid).
R.T.A would like to thank Cándida García Jiménez and Buenaventura Andrés López for invaluable advice. Work partially supported by the Spanish research contracts FPA2008-00592, FIS2008-01323, UCM-BSCH GR58/08 910309 and the FPI programme (BES-2009- 013672).
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