Pion and Kaon Production in $e^{+}{e}^{-}$ and $ep$ Collisions at Next-to-Leading Order

Abstract

We present new sets of fragmentation functions for charged pions and kaons, both at leading and next-to-leading order. They are fitted to data on inclusive charged-hadron production in $e^{+}{e}^{-}$ annihilation taken by TPC at PEP ($\sqrt{s}=29$~GeV) and to similar data by ALEPH at LEP, who discriminated between events with charm, bottom, and light- flavour fragmentation in their charged-hadron sample. We treat all partons independently and to properly incorporate the charm and bottom thresholds. Due to the sizeable energy gap between PEP and LEP, we are sensitive to the scaling violation in the fragmentation process, which allows us to extract a value for the asymptotic scale parameter of QCD, $\Lambda$. Recent data on inclusive charged-hadron production in tagged three-jet events by OPAL and similar data for longitudinal electron polarization by ALEPH allow us to pin down the gluon fragmentation functions. Our new fragmentation functions lead to an excellent description of a multitude of other $e^{+}{e}^{-}$ data on inclusive charged-hadron production, ranging from $\sqrt{s}=5.2$~GeV to LEP energy. In addition, they agree nicely with the transverse-momentum spectra of single charged hadrons measured by H1 and ZEUS in photoproduction at the $ep$ collider HERA, which represents a nontrivial check of the factorization theorem of the QCD-improved parton model.

22 pages, latex, 13 compressed ps figures in separate file

References in corpus (7)

• Global QCD Analysis and the CTEQ Parton Distributions
• Improving the Weizsäcker-Williams Approximation in Electron-Proton Collisions
• Next-to-Leading Order Fragmentation Functions for Pions and Kaons
• Inclusive particle photoproduction to next-to-leading order
• Inclusive transverse momentum distributions of charged particles in diffractive and non--diffractive photoproduction at HERA
• Inclusive particle production at HERA: Higher-order QCD corrections to the resolved quasi-real photon contribution
• INCLUSIVE PARTICLE PRODUCTION IN $\pbp$ COLLISIONS

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