SCALAR TOP PRODUCTION IN E+E- ANNIHILATION

被引：120

作者：

DREES, M

HIKASA, K

机构：

[1] CERN,CH-1211 GENEVA 23,SWITZERLAND

[2] NATL LAB HIGH ENERGY PHYS,TSUKUBA,IBARAKI 305,JAPAN

来源：

PHYSICS LETTERS B | 1990年 / 252卷 / 01期

关键词：

D O I：

10.1016/0370-2693(90)91094-R

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We discuss the pair production of light scalar top quarks in e+e- annihilation. The lighter mass eigenstate approximately-t1 is a mixture of SU(2) doublet and singlet approximately-t states and can have a vanishing coupling to the Z boson. We show that the present data on the total decay width of the Z0 can put a bound on the approximately-t1 mass for some values of the mixing angle, but even existing dedicated search for squarks leaves a large portion of the parameter space unconstrained. We include both initial-state QED and final-state QCD corrections in our results for the cross section; even quite far away from the threshold the total corrections can lie between - 15% and + 70%.

引用

页码：127 / 134

页数：8

共 20 条

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