Hadron production in hadron-hadron and lepton-hadron collisions

被引：0

作者：

Kniehl, BA ^{[1
]}

机构：

[1] Univ Hamburg, Inst Theoret Phys, D-22761 Hamburg, Germany

来源：

HADRON COLLIDER PHYSICS 2002, PROCEEDINGS | 2003年

关键词：

D O I：

暂无

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：

We review a recent global analysis of inclusive single-charged-hadron production in high-energy colliding-beam experiments, which is performed at next-to-leading order (NLO) in the parton model of quantum chromodynamics endowed with nonperturbative fragmentation functions (FFs). Comparisons of p (p) over bar data from CERN Sp (p) over barS and the Fermilab Tevatron and gammap data from DESY HERA with the corresponding NLO predictions allow for quantitative tests of the scaling violations in the FFs and their universality. We emphasize the potential of new measurements at the Tevatron to place tight constraints in the large-x region and on the gluon FF, complementary to those from e(+)e(-) data, which are indispensible in order to reliably predict the pidegrees background for the H --> gammagamma signal of the intermediate-mass Higgs boson at the Tevatron and the CERN LHC. Adopting a similar theoretical framework for b-hadron production, we show that the notorious excess of the Tevatron data over existing theoretical calculations can be ascribed, at sufficiently large values of P-T, to nonperturbative fragmentation effects inadequately included previously.

引用

页码：161 / 170

页数：10

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