Positivity bounds for Sivers functions
classification
✦ hep-ph
keywords
boundsfunctionspositivityprocessessiversasymmetryconstraintderive
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We generalize a positivity constraint derived initially for parity-conserving processes to the parity-violating ones, and use it to derive non-trivial bounds on several Sivers functions, entering in the theoretical description of single spin asymmetry for various processes.
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