Global analysis of fragmentation functions for pions and kaons and their uncertainties

By D. Florian, R. Sassot, M. Stratmann. 2007

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We present new sets of pion and kaon fragmentation functions obtained in next-to-leading order combined analyses of single-inclusive hadron production in electron-positron annihilation, proton-proton collisions, and deep-inelastic lepton-proton scattering with either pions or kaons identified in the final state. At variance with all previous fits, the present analyses take into account data where hadrons of different electrical charge are identified, which allow one to discriminate quark from antiquark fragmentation functions without the need of nontrivial flavor symmetry assumptions. The resulting sets are in good agreement with all data analyzed, which cover a much wider kinematical range than in previous fits. An extensive use of the Lagrange multiplier technique is made in order to assess the uncertainties in the extraction of the fragmentation functions and the synergy from the complementary data sets in our global analysis.

Subfields: Nuclear and High Energy Physics

View Paper: https://www.semanticscholar.org/paper/e28a8fadc109cc5f0b51c4157c7e534d1d5f6f0c

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In Nuclear and High Energy Physics

Citations in the corpus

A Large Hadron Electron Collider at CERN: Report on the Physics and Design Concepts for Machine and Detector (2012, methodology): “All other line types refer to ePb collisions: dashed black ones to standard nucleon PDFs [282] and fragmentation functions [515, 516], solid red (green) ones to nuclear PDFs [326] ( [167]) and nucleon fragmentation functions, and solid blue ones to nuclear PDFs [326] and nuclear fragmentation functi”
Extraction of heavy-flavor transport coefficients in QCD matter (2018, methodology): “We use DSS [153], BCFY [11] and KLP [154] fragmentation functions for light hadrons, D mesons and B mesons, respectively.”
Jet substructure at the Large Hadron Collider: A review of recent advances in theory and machine learning (2017, neutral): “, [133]).”
EPS09: A New Generation of NLO and LO Nuclear Parton Distribution Functions (2009, result): “We have, however, checked that the results obtained with newer ones AKK08 [32] and nDSS [33, 34] practically all coincide in the case of average pions.”
Heavy-flavour and quarkonium production in the LHC era: from proton–proton to heavy-ion collisions (2015, methodology): “This procedure includes (i) production of light and heavy-flavour partons based on the non-zero-mass variable flavour number scheme VFNS [391], NLO [422] and FONLL calculations [44], respectively, (ii) multigluon [576] and path-length [519, 577] fluctuations, (iii) light [578] and heavy [579–581] fl”