Testing the universality of fragmentation functions

被引:170
作者
Kniehl, BA
Kramer, G
Pötter, B
机构
[1] Univ Hamburg, Inst Theoret Phys 2, D-22761 Hamburg, Germany
[2] Max Planck Inst Phys, Werner Heisenberg Inst, D-80805 Munich, Germany
关键词
D O I
10.1016/S0550-3213(00)00744-6
中图分类号
O412 [相对论、场论]; O572.2 [粒子物理学];
学科分类号
摘要
Using fragmentation functions for charged pions, charged kaons, and (anti)protons recently extracted from experimental data of e(+)e(-) annihilation at the Z-boson resonance and at centre-of-mass energy roots = 29 GeV, we perform a global study of inclusive charged-hadron production in p (p) over bar, gammap, and gamma gamma collisions at next-to-leading order in the parton model of quantum chromodynamics. Comparisons of our results with pp data from CERN Sp (p) over barS and the Fermilab Tevatron, yp data from DESY HERA, and gamma gamma data from CERN LEP2 allow us to test the universality of the fragmentation functions predicted by the factorization theorem. Furthermore, we perform comparisons with e(+)e(-) annihilation data from LEP2 so as to test the scaling violations predicted by the Altarelli-Parisi evolution equations. (C) 2001 Elsevier Science B.V. All rights reserved.
引用
收藏
页码:337 / 369
页数:33
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