Decisive Role of Fragmentation Functions in Hard Hadron Production

Xiaofei Zhang, George Fai, Péter Lévai

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19 Citations (Scopus)


It is demonstrated that the fragmentation functions at large momentum fraction play a key role in hard hadron production from relativistic proton-proton collisions. We find that this region of the fragmentation functions is not strongly constrained by the electron-positron data. This freedom can be used (together with the transverse-momentum distribution of partons) to reproduce hard pion-to-proton ratio data in relativistic proton-proton collisions.

Original languageEnglish
JournalPhysical review letters
Issue number27
Publication statusPublished - Jan 1 2002


ASJC Scopus subject areas

  • Physics and Astronomy(all)

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