arXiv:1003.4913·v2·High Energy Physics — Phenomenology
Positivity bounds for Sivers functions
Zhong-Bo Kang (RIKEN BNL)🇺🇸 · Jacques Soffer (Temple U.)🇺🇸
Abstract
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.
Comments: 6 pages, version to appear in PLB