TOP NEAR-THRESHOLD - ALL ALPHA(S) CORRECTIONS ARE TRIVIAL

被引：87

作者：

MELNIKOV, K ^{[1
]}

YAKOVLEV, O ^{[1
]}

机构：

[1] BUDKER NUCL PHYS INST,NOVOSIBIRSK 630090,RUSSIA

来源：

PHYSICS LETTERS B | 1994年 / 324卷 / 02期

关键词：

D O I：

10.1016/0370-2693(94)90410-3

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We have calculated a new class of the O(alpha(S)) QCD radiative correction to the total cross-section of the top threshold production in e+e- --> ttBAR --> W-bW+bBAR reaction. This correction originates from bbBAR, tbBAR, tbBAR gluon exchange and the corresponding gluon emission. We call them ''jet-jet'' interactions. We found out a curious fact: there is no O(alpha(S)) correction to the total cross-section, originated from ''jet-jet'' interaction. Thus, all O(alpha(S)) corrections which are non-zero, can be classified as 1) corrections to the ttBAR nonrelativistic potential, 2) corrections to the the top width, and 3) the hard gluon correction to the gammattBAR-vertex. These corrections are well-known and were described in previous papers.

引用

页码：217 / 223

页数：7