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Momentum sum rules for fragmentation functions are considered. In particular, we give a general proof of the Sch\"afer-Teryaev sum rule for the transverse momentum dependent Collins function. We also ...
Rise and Fall of Pentaquarks in the QCD Sum Rules Approach
Mass and decay Pentaquarks QCD Sum Rules
2010/10/13
We review the existing mass and decay width determinations of pentaquarks with QCD Sum Rules (QCDSR). We give special attention to the intermediate assumptions and choices which we are obliged to do i...