Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
1998-02-14
Phys.Rev. D58 (1998) 094014
Physics
High Energy Physics
High Energy Physics - Phenomenology
24 pages LaTeX file including 11 postscript figure files
Scientific paper
10.1103/PhysRevD.58.094014
The production of the octet of baryons and mesons in e^+ e^- collisions is analysed, based on considerations of SU(3) symmetry and a simple model for SU(3) symmetry breaking in fragmentation functions. All fragmentation functions, D_q^h(x, Q^2), describing the fragmentation of quarks into a member of the baryon octet (and similarly for fragmentation into members of the meson octet) are expressed in terms of three SU(3) symmetric functions, \alpha(x, Q^2), \beta(x, Q^2), and \gamma(x, Q^2). With the introduction of an SU(3) breaking parameter, \lambda, the model is successful in describing hadroproduction data at the Z pole. The fragmentation functions are then evolved using leading order evolution equations and good fits to currently available data at 34 GeV and at 161 GeV are obtained.
Indumathi D.
Mani H. S.
Rastogi Anubha
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