Abstract
Valence quark annihilation with subsequent recombination is considered as the dominant nonscaling process contributing to lowp ⊥ pion production in the proton fragmentation region at medium energies. With the aid of a Kuti-Weisskopf model for quark distribution functions the inclusive ratios π+/π− have been calculated and compared to data forHp→π± +anything withH=π±,K −,\(\bar p\). Each of these beam particles carries valence antiquarks. The dependence of the ratios on the Feynman variablex and their energy dependence is well reproduced.
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Work supported in part by the Fond zur Föderung der wissenschaftlichen Forschung in Österreich
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Buschbeck, B., Dibon, H. & Gerhold, H.R. An extended quark recombination model with valence quark annihilation compared to inclusive π+/π− ratios. Z. Phys. C - Particles and Fields 7, 73–80 (1980). https://doi.org/10.1007/BF01577323
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DOI: https://doi.org/10.1007/BF01577323