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arXiv · 0809.0191

Towards a model independent approach to fragmentation functions

Ekaterina Christova·Elliot Leader
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Abstract

We show that the difference cross sections in unpolarized SIDIS e+N\to e+h+X and pp hadron production p+p\to h+X determine independently in a model independent way, in any order in QCD, the two FFs: D_u^{h-\bar h} and D_d^{h-\bar h}, h=π^\pm, K^\pm or a sum over charged hadrons. If both K^\pm and K_s^0 are measured, then e+e-\toK+X, e+N\to e+K+X and p+p\to K+X present independent measurements of just one FF: D_{u-d}^{K^++K^-}. The above results allow to test the existing parametrizations, obtained with various different assumptions about the FFs, and to test the $Q^2$ evolution and factorization.

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Ekaterina Christova, Elliot Leader. 2008-11-10. Towards a model independent approach to fragmentation functions. https://doi.org/10.1103/physrevd.79.014019

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