Confronting fragmentation function universality with single hadron inclusive production at HERA and e{sup +}e{sup -} colliders

Journal Article · Thu Feb 01 04:00:00 EST 2007 · Physical Review. D, Particles Fields

DOI:https://doi.org/10.1103/PHYSREVD.75.034018· OSTI ID:21010994

Albino, S; Kniehl, B A; Kramer, G; Sandoval, C ^[1]

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1. II. Institute for Theoretical Physics, University of Hamburg, Luruper Chaussee 149, 22761 Hamburg (Germany)

Predictions for light charged hadron production data in the current fragmentation region of deeply inelastic scattering from the H1 and ZEUS experiments are calculated using perturbative quantum chromodynamics at next-to-leading order, and using fragmentation functions obtained by fitting to similar data from e{sup +}e{sup -} reactions. General good agreement is found when the magnitude Q{sup 2} of the hard photon's virtuality is sufficiently large. The discrepancy at low Q and small scaled momentum x{sub p} is reduced by incorporating mass effects of the detected hadron. By performing quark tagging, the contributions to the overall fragmentation from the various quark flavours in the ep reactions are studied and compared to the contributions in e{sup +}e{sup -} reactions. The yields of the various hadron species are also calculated.

• OSTI ID: 21010994
• Journal Information: Physical Review. D, Particles Fields, Journal Name: Physical Review. D, Particles Fields Journal Issue: 3 Vol. 75; ISSN PRVDAQ; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
DEEP INELASTIC SCATTERING
ELECTRON-POSITRON INTERACTIONS
ELECTRON-PROTON INTERACTIONS
FLAVOR MODEL
FOUR MOMENTUM TRANSFER
HADRONS
HERA STORAGE RING
MULTIPARTICLE SPECTROMETERS
NUCLEAR REACTION YIELD
PARTICLE IDENTIFICATION
PARTICLE PRODUCTION
PERTURBATION THEORY
PHOTONS
QUANTUM CHROMODYNAMICS
QUARKS
REST MASS