The Comparative Study of the Inclusive π⁰ Analyzing Power in Reactions p+p(pol)->π⁰ + X and π^-+p(pol)->π⁰ + X at 50 and 40 Gev/C Respectively

2007/12/17 by V. V. Mochalov, S. B. Nurushev, Mochalov, V. V. +51
Physics and Astronomy · #FOS: Physical sciences #High Energy Physics - Experiment (hep-ex) #hep-ex

paper · pdf · doi:10.48550/arxiv.0712.2677

Talk given at XII Workshop on High Energy Spin Physics (Dubna-SPIN-07)

arxiv created 2007/12/17 · arxiv updated 2009/12/01

Abstract

Single-spin asymmetries A_N in reactions p+p(pol)->π⁰ + X and π^-+p(pol)->π⁰ + X at 50 and 40 GeV/c respectively behave in drastically different ways in function of transverse momentum in the central region. At the same time A_N in the polarized proton fragmentation region of these reactions are practically coinciding. Our new data on the analyzing power at 50 GeV/c in the polarized proton fragmentation region in reaction p+p(pol)->π⁰ + X confirm this conclusion with better statistics and coincide with our previous data at 70 GeV/c for the same reaction.

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