1993/03/26 by F. Myhrer, Myhrer, F.
Computer Science · Physics and Astronomy · #Distributed and Parallel Computing Systems #FOS: Physical sciences #Nuclear Theory (nucl-th) #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #nucl-th
paper · pdf · doi:10.48550/arxiv.nucl-th/9303020
6 pages, USCreport 1993
arxiv created 1993/03/26 · openalex publication_date 1993/03/26 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
Arguments are presented for the expected behaviour of \piNpiN scattering and the \pbarppipi reaction at high energy and large scattering angles. % The annihilation reaction has close to maximal asymmetry (≈ 1) for plab \siml 2.2 GeV/c. % As will be presented for fixed (90°) angle this large asymmetry will not become zero but will start to oscillate with energy at higher energies and large Q2 when perturbative QCD becomes applicable. This is due to the energy dependence of a QCD phase difference between the independent quark-quark scattering (Landshoff) and short-distance processes at high but not asymptotic energies. % A consequence of the existence the Landshoff process is that even if helicity is conserved at the quark level (mq = 0 MeV), helicity does not have to be conserved on the hadronic level. % We will discuss the implications for spin observables in pp elastic scattering and argue that