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

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

2000-07-14

arxiv.org/abs/hep-ph/0007153v1

Acta Phys.Polon. B31 (2000) 2443-2451

Physics

High Energy Physics

High Energy Physics - Phenomenology

A talk given at the workshop "Meson2000", Cracow, Poland, 19-23 May 2000

Scientific paper

We discuss the role of some nonpartonic effects which lead to $N_p^{\pi^+} \ne N_n^{\pi^+}$ and $N_p^{\pi^-} \ne N_n^{\pi^-}$ 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 $\rho^0$ are given as examples. The results are discussed in the context of recent HERMES data.

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