MOMENTUM DISTRIBUTIONS IN T(T)OVER-BAR PRODUCTION AND DECAY NEAR THRESHOLD

被引：93

作者：

JEZABEK, M ^{[1
]}

KUHN, JH ^{[1
]}

TEUBNER, T ^{[1
]}

机构：

[1] INST NUCL PHYS,PL-31342 KRAKOW,POLAND

来源：

ZEITSCHRIFT FUR PHYSIK C-PARTICLES AND FIELDS | 1992年 / 56卷 / 04期

关键词：

D O I：

10.1007/BF01474740

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 Green function formalism for the description of ttBAR production in e+ e- annihilation close to threshold is extended from the calculation of the total cross section to the prediction of momentum distributions of top quarks. The Lippmann-Schwinger equation is solved numerically in momentum space for the two loop QCD potential. The spectra of W bosons from top quark decays are calculated and found to be strongly affected by the QCD potential and the large width of the top quark. If one aims towards a kinematic determination of the top quark mass and of the tbW coupling in the threshold region these effects must be taken into consideration.

引用

页码：653 / 660

页数：8

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