Abstract
Events are analyzed in which a high transverse momentum proton was produced at polar angles of 10°, 20° and 45°. The experiment was performed with the Split Field Magnet detector at the CERN ISR at\(\sqrt s \)=62 GeV. A 4-jet structure of these events is found [1]. The measured charge structure of spectator jets is compatible with proton production from hard diquark scattering. This is supported by a study of baryon number compensation in the towards jets. The observed charge compensation in the towards jets suggests dominance of hard (ud) scattering. Evidence forΔ ++ production at high transverse momentum indicates the presence of an additional (uu) scattering component. The properties of the recoiling away jets are compatible with the fragmentation of a valence quark and/or of a gluon as in the case of meson triggers.
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Breakstone, A., Campanini, R., Crawley, H.B. et al. Tagging diquarks by protons of high transverse momentum inpp collisions at the ISR. Z. Phys. C - Particles and Fields 36, 567–576 (1987). https://doi.org/10.1007/BF01630594
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DOI: https://doi.org/10.1007/BF01630594