Journal
EUROPEAN PHYSICAL JOURNAL C
Volume 36, Issue 3, Pages 371-374Publisher
SPRINGER
DOI: 10.1140/epjc/s2004-01956-4
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The cross section data for pi(0) inclusive production in pp collisions is considered in a rather broad kinematic region in energy roots, Feynman variable x(F) and transverse momentum p(T). The analysis of these data is done in the perturbative QCD framework at the next-to-leading order. We find that they cannot be correctly described in the entire kinematic domain and this leads us to conclude that the single-spin asymmetry, A(N) for this process, observed several years ago at FNAL by the experiment E704 and the recent result obtained at BNL-RHIC by STAR, are two different phenomena.
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