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Semi-inclusive production of pions in DIS and $\bar d - \bar u$ asymmetry

V. Uleshchenko·A. Szczurek·J. Speth
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Abstract

We discuss the role of some nonpartonic effects which lead to $N_p^{π^+} \ne N_n^{π^+}$ and $N_p^{π^-} \ne N_n^{π^-}$ and may therefore modify the conclusionon the $\bar d - \bar u$ asymmetry extracted from semi-inclusive production of pions in DIS. Quantitative estimations for resolved photon and exclusive $ρ^0$ are given as examples. The results are discussed in the context of recent HERMES data.

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V. Uleshchenko, A. Szczurek, J. Speth. 2000-07-14. Semi-inclusive production of pions in DIS and $\bar d - \bar u$ asymmetry. https://arxiv.org/abs/hep-ph/0007153

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