Abstract
Before discussing the “theories” it is necessary to define the subject more precisely. The best way to do so is to specify those high P 2⊥ spin effects which must be described by the relevant theories. These effects provide “test facility” for “High P 2⊥ Spin Theories”. They are listed below /1/:
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rapid increase and large value of analyzing power A observed in large angle pp-scattering at p L = 28GeV/c (BNL);
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rapid increase of spin-spin correlation parameter A nn(up to 60%) when energy grows from 6 to 12 GeV; there is an indication for oscillations with energy (ANL);
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single spin asymmetry increase with p ⊥ up to (20–40)% in inclusive π˚ — production processes in the central region (IHEP, CERN, FNAL).
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Tyurin, N.E. (1991). High P 2⊥ Spin Theories. In: Althoff, KH., Meyer, W. (eds) High Energy Spin Physics. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-86995-2_5
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DOI: https://doi.org/10.1007/978-3-642-86995-2_5
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