Towards a model independent approach to fragmentation functions
arXiv:0809.0191 · doi:10.1103/PhysRevD.79.014019
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 evolution and factorization.
10 pages and no figures, references added and there are some changes in the text and the abstract
References in corpus (6)
- Global analysis of fragmentation functions for pions and kaons and their uncertainties
- Global Analysis of Fragmentation Functions for Protons and Charged Hadrons
- Determination of fragmentation functions and their uncertainties
- Production of Mesons and Baryons at High Rapidity and High Pt in Proton-Proton Collisions at sqrt(s) = 200 GeV
- Strangeness asymmetry of the nucleon in the statistical parton model
- On Kaon production in e+e- and Semi-inclusive DIS reactions