东莞理工学院学报
東莞理工學院學報
동완리공학원학보
JOURNAL OF DONGGUAN INSTITUTE OF TECHNOLOGY
2008年
5期
5-9
,共5页
SU(3)简易群模型%自旋修正%新的规范玻色子
SU(3)簡易群模型%自鏇脩正%新的規範玻色子
SU(3)간역군모형%자선수정%신적규범파색자
SU(3) simple group model%spin correction%new gauge boson
在SU(3)简易群模型的框架下,研究了在直线对撞机上质心能量为800GeV时顶夸克对通过e+e-→tt过程产生的自旋修正.结果表明新的规范玻色子ZH对t↑t↓态和t↓t↑态的产生截面能产生明显的修正;当1TeV ≤ MZH≤2TeV和cosθ<0时,相对修正参数的值R(t↑t↓)和R(t↓t↑)分别在18.16%～3.45%和47.6%～3.4%的范围.因而在大部分参数空间内,新的规范玻色子HZ对顶夸克对产生的自旋修正影响应该可以在未来的高能直线对撞机上被现测到.
在SU(3)簡易群模型的框架下,研究瞭在直線對撞機上質心能量為800GeV時頂誇剋對通過e+e-→tt過程產生的自鏇脩正.結果錶明新的規範玻色子ZH對t↑t↓態和t↓t↑態的產生截麵能產生明顯的脩正;噹1TeV ≤ MZH≤2TeV和cosθ<0時,相對脩正參數的值R(t↑t↓)和R(t↓t↑)分彆在18.16%～3.45%和47.6%～3.4%的範圍.因而在大部分參數空間內,新的規範玻色子HZ對頂誇剋對產生的自鏇脩正影響應該可以在未來的高能直線對撞機上被現測到.
재SU(3)간역군모형적광가하,연구료재직선대당궤상질심능량위800GeV시정과극대통과e+e-→tt과정산생적자선수정.결과표명신적규범파색자ZH대t↑t↓태화t↓t↑태적산생절면능산생명현적수정;당1TeV ≤ MZH≤2TeV화cosθ<0시,상대수정삼수적치R(t↑t↓)화R(t↓t↑)분별재18.16%～3.45%화47.6%～3.4%적범위.인이재대부분삼수공간내,신적규범파색자HZ대정과극대산생적자선수정영향응해가이재미래적고능직선대당궤상피현측도.
In the context of the SU(3) simple group model, we study the spin correction of the top quark pair production via the process e+ e- → tt at the high energy linear e+ e- collider (ILC) with a centre-of-mass energy (S)=800GeV. Our numerical results show that the gauge boson ZH exchange can generate significantly corrections to the differential cross sections for the t↑t↓ and t↓t↑ states. For 1TeV ≤MZH ≤ 2TeV and cos θ ＜ 0, the values of the relative correction parameters R (t↑t↓) and R (t↓t↑) are in the ranges of 18.16%-3.45% and 47.6%-3.4%, respectively. Thus, in most of the parameter space, the effects of the new gauge boson Z, on the spin configurations of the top quark pair production might be observed at the future ILC experiments.
