{"arxiv_id":"1003.1084","title":"The non-singlet kaon fragmentation function from e^+e^- kaon production","abstract":"We perform fits to the available charged and neutral kaon production data in $e^++e^-\\to K+X$, $K=K^\\pm and K^0_S$, and determine the non-singlet combination of kaon fragmentation functions $D_u^{K^\\pm}-D_d^{K^\\pm}$ in a model independent way and without any correlations to the other fragmentation functions. Only nuclear isospin invariance is assumed. Working with non-singlets allows us to include the data at very low momentum fractions, which have so far been excluded in global fits, and to perform a first NNLO fit to fragmentation functions. We find that the kaon non-singlet fragmentation function at large $z$ is larger than that obtained by the other collaborations from global fit analysis and differs significantly at low $z$.","primary_cat":"hep-ph","cross_cats":[],"submitted_at":"2010-03-04T16:28:09+00:00","latest_version":2,"source":"arxiv","source_label":"arXiv","source_url":null,"has_pdf":true,"has_source":false,"verdict":null,"confidence":null,"one_line_summary":null,"novelty_score":null,"correctness_risk":null,"formal_verification":null,"upvotes":0,"downvotes":0,"pith_score":0,"inbound_count":0,"_links":{"html":"https://pith.science/paper/1003.1084","verdict":"/api/v1/verdicts/1003.1084"}}