Next-to-modified leading logarithmic approximation corrections to single inclusive k⊥ distributions and two-particle correlations in a jet

被引：9

作者：

Perez-Ramos, Redamy ^{[1
,2
]}

Arleo, Francois ^{[3
,4
]}

Machet, Bruno ^{[5
]}

机构：

[1] Univ Hamburg, Inst Theoret Phys 2, D-22761 Hamburg, Germany

[2] Werner Heisenberg Inst, Max Planck Inst Phys, D-80805 Munich, Germany

[3] Univ Savoie, LAPTH, UMR 5108, F-74941 Annecy Le Vieux, France

[4] CNRS, F-74941 Annecy Le Vieux, France

[5] Univ Paris 06, Phys Theor & Hautes Energies Lab, CNRS, UMR 7589, F-75252 Paris, France

来源：

PHYSICAL REVIEW D | 2008年 / 78卷 / 01期

关键词：

D O I：

10.1103/PhysRevD.78.014019

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The hadronic k(perpendicular to)-spectrum inside a high-energy jet is determined including corrections of relative magnitude O(root alpha(s)) with respect to the Modified Leading Logarithmic Approximation (MLLA) in the limiting spectrum approximation (assuming an infrared cutoff Q(0) = Lambda(QCD)) and beyond (Q(0) not equal Lambda(QCD)). The results in the limiting spectrum approximation are found to be, after normalization, in impressive agreement with preliminary measurements by the CDF Collaboration, unlike what occurs at MLLA, pointing out small overall nonperturbative contributions. Within the same framework, 2-particle correlations inside a jet are also predicted at next-to-MLLA and compared to previous MLLA calculations.

引用

页数：25