The strange quark mass from scalar sum rules updated
نویسنده
چکیده
A precise determination of the strange quark mass, being one of the fundamental parameters in the Standard Model (SM), is of paramount interest in several areas of present day particle phenomenology. Until today two main methods have been employed to achieve this task. QCD sum rules [2] have been applied to various channels containing strange quantum numbers, in particular the scalar channel that will be the subject of this talk [3–5], and more recently also lattice QCD simulations have been used to extract the strange quark mass [6,7]. The basic object which is investigated in the simplest version of QCD sum rules is the twopoint function Ψ(q) of two hadronic currents
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