On leading charmed meson production in $\pi$-nucleon interactions

Abstract

It is shown that the D--meson, whose light quark is the initial-pion valence quark and whose charmed quark is produced in annihilation of valence quarks and has got a large enough momentum, is really a leading meson in reactions like ${\pi }^{-}p->DX$. If such annihilation of valence quarks from initial hadrons is impossible there must be no distinct leading effect.

arXiv comment4 pages, 2.ps-figures

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