PIONIC PARTON DISTRIBUTIONS

被引：295

作者：

GLUCK, M

REYA, E

VOGT, A

机构：

[1] Institut für Physik, Universität Dortmund, Dortmund 50

来源：

ZEITSCHRIFT FUR PHYSIK C-PARTICLES AND FIELDS | 1992年 / 53卷 / 04期

关键词：

D O I：

10.1007/BF01559743

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 gluon and sea distributions of the pion are uniquely determined by the requirement of a valence-like structure of the input parton distributions at some low resolution scale. These (dynamical) results are obtained with practically no free parameters, just using the experimentally determined pionic valence distribution combined with the constraints for the pionic gluon distribution provided by direct-gamma data. Simple parametrizations of the resulting parton distributions are presented in the range 10(-5) less-than-or-similar-to x < 1 and 0.3 less-than-or-similar-to rho(2) less-than-or-similar-to 10(8) GeV2 as obtained from the leading- and higher-order evolution equations.

引用

页码：651 / 655

页数：5

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