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Decisive Role of Fragmentation Functions in Hard Hadron Production

Xiaofei Zhang·George Fai·Peter Levai
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Abstract

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.

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Xiaofei Zhang, George Fai, Peter Levai. 2002-05-01. Decisive Role of Fragmentation Functions in Hard Hadron Production. https://doi.org/10.1103/physrevlett.89.272301

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