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arXiv · 1211.3333

QCD analysis of Lambda hyperon production in DIS target-fragmentation region

Federico Alberto Ceccopieri·Davide Mancusi
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Abstract

We consider Lambda-hyperon production in the target-fragmentation region of semi-inclusive deep-inelastic scattering within the framework of fracture functions. We present a first attempt to determine the flavour and energy dependences of these non-perturbative distributions through a simultaneous QCD-based fit to available neutral- and charged-current semi-inclusive-DIS cross sections. Predictions based on the resulting nucleon-to-Lambda fracture functions are in good agreement with data and observables not included in the regression. The successful prediction of the $Q^2$ dependence of the Lambda multiplicity notably represents the first validation of the perturbative framework implied by fracture functions.

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Federico Alberto Ceccopieri, Davide Mancusi. 2013-05-07. QCD analysis of Lambda hyperon production in DIS target-fragmentation region. https://doi.org/10.1140/epjc%2Fs10052-013-2435-5

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