4 papers · 1 filter
Pentaquark from QCD sum rules: consequences of the diquark approach
Markus Eidemuller
In this work we investigate the consequences of the Jaffe and Wilczek diquark model in the framework of QCD sum rules. An analysis of the Theta^+(1540) as (ud)^2\bar{s} state shows…
Pentaquark and diquark-diquark clustering: a QCD sum rule approach
Markus Eidemuller
In this work we study the Theta(1540) in the framework of QCD sum rules based on (ud)^2\bar{s} diquark clustering as suggested by Jaffe and Wilczek. Within errors, the mass of the…
Finite energy sum rules for the vector current: the strange quark mass
Markus Eidemuller, Matthias Jamin, Felix Schwab
We determine the strange quark mass in the framework of finite energy sum rules from the vector current channel. The theoretical contributions are calculated in contour improved pe…
Quark-hadron-duality in the charmonium and upsilon system
Markus Eidemuller
In this work we discuss the practical and conceptual issues related to quark-hadron-duality in heavy-heavy systems. Recent measurements in the charmonium region allow a direct test…