EFFECT OF PARTON TRANSVERSE MOTION IN LARGE-P-PERPENDICULAR-TO REACTIONS

被引：38

作者：

FONTANNAZ, M

SCHIFF, D

机构：

[1] Laboratoire de Physique Théorique et Hautes Energies, Orsay, 91405 Orsay

来源：

NUCLEAR PHYSICS B | 1978年 / 132卷 / 05期

关键词：

D O I：

10.1016/0550-3213(78)90471-6

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：

The parton transverse motion within the incident hadrons cannot be neglected when calculating large-p⊥ reaction cross sections in the framework of hard scattering models. We give a general discussion of this effect for a large class of models. The results depend strongly on the parametrization of the hard scattering cross section at small momentum transfer in the parton-parton center of mass. With reasonable assumptions, we find that the parton transverse motion enhances the hard scattering model predictions for Edσ/dp by a factor of two and reduces E dN dp= ∫ dp′ E′EE′ d(2)σ dpdp′ E′E′ dσ dp′ by a comparable factor, in the range p⊥ ≅ 2-3 GeV/c. We study the correlations between the large-p⊥ trigger and the background low-p⊥ secondaries and give an estimate of the encountered azimuthal asymmetry around the beam momentum with a simple model. © 1978.

引用

页码：457 / 477

页数：21

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