Fragmentation functions for pions, kaons, and protons at next-to-leading order
By Bernd A. Kniehl, G. Kramer, B. Pötter. 2000
315 citations recorded by the source corpus.
We present new sets of fragmentation functions for charged pions, charged kaons, and protons, both at the leading and next-to-leading orders. They are tted to the scaled-momentum distributions of these hadrons measured in e + e annihilation on the Z-boson resonance at CERN LEP1 and SLAC SLC. These data partly come as light-, charm-, bottom-quark-enriched and gluon-jet samples, which allows us to treat all partons independently, after imposing the SU(2) flavour symmetry relations. In order to gain sensitivity to the scaling violation in fragmentation, we also include data from SLAC PEP, with center-of-mass energy p s = 29 GeV, in our ts. This allows us to also determine the strong-coupling constant, with a competitive error. LEP1 data on the longitudinal cross section as well as DESY DORIS and PETRA data at lower energies nicely agree with theoretical predictions based on our fragmentation functions.
Subfields: Nuclear and High Energy Physics
View Paper: https://www.semanticscholar.org/paper/5d1a8ccab7bc1260ee94cee9449e6ffc2a2fdf18
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In Nuclear and High Energy Physics
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- Studies of QCD at e(+)e(-) centre-of-mass energies between 91 and 209 GeV (2004, methodology): “Global parametrisations have been obtained by various authors, KKP [ 23 ], BWFG [24] and K [25].”