Minimisation strategies for the determination of parton density functions

27 Nov 2017  ·  Carrazza Stefano, Hartland Nathan P. ·

We discuss the current minimisation strategies adopted by research projects involving the determination of parton distribution functions (PDFs) and fragmentation functions (FFs) through the training of neural networks. We present a short overview of a proton PDF determination obtained using the covariance matrix adaptation evolution strategy (CMA-ES) optimisation algorithm... We perform comparisons between the CMA-ES and the standard nodal genetic algorithm (NGA) adopted by the NNPDF collaboration. read more

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High Energy Physics - Phenomenology