Top quark production near threshold and the top quark mass

被引：121

作者：

Beneke, M ^{[1
]}

Signer, A

Smirnov, VA

机构：

[1] CERN, Div Theory, CH-1211 Geneva 23, Switzerland

[2] Univ Durham, Dept Phys, Durham DH1 3LE, England

[3] Moscow State Univ, Inst Phys Nucl, Moscow 119889, Russia

来源：

PHYSICS LETTERS B | 1999年 / 454卷 / 1-2期

基金：

俄罗斯基础研究基金会;

关键词：

D O I：

10.1016/S0370-2693(99)00343-3

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We consider tap-anti-top production near threshold in e(+)e(-) collisions, resumming Coulomb-enhanced corrections at next-to-next-to-leading order (NNLO). We also sum potentially large logarithms of the small top quark velocity at the next-to-leading logarithmic level using the renormalization group. The NNLO correction to the cross section is large, and it leads to a significant modification of the peak position and normalization. We demonstrate that an accurate top quark mass determination is feasible if one abandons the conventional pole mass scheme and if one uses a subtracted potential and the corresponding mass definition. Significant uncertainties in the normalization of the <(tt)over bar> cross section, however, remain. (C) 1999 Published by Elsevier Science B.V. All rights reserved.

引用

页码：137 / 146

页数：10

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