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LHC上顶夸克极化效应的研究

Probing top quark polarization effects at LHC
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摘要 在顶色辅助的人工色模型框架下,在LHC上研究了t-t对的产生过程中顶夸克的极化效应,在计算过程中,运用了CTEQ5部分子分布函数和螺旋度投影算符的方法.结果表明:考虑极化后,在绝大部分参数空间内,截面修正大于15%,该修正在实验上完全可以探测.因此,在LHC上,人们有希望通过t-t的产生过程发现TC2模型存在的迹象. In this paper,we study the polarization effects of the top -quark to the top anti-top production at the LHC in the top-color-assisted technicolor model,The CTEQ5 parton distributions and the helicity projection operators methods are used in the calculation . It is shown that:considering the polarization effects, the corrections of the cross section are larger than 15% in most parameter spaces,the corrections can be experimentally detected. Therefore, it is promising to find the clue of the TC2 model via the tt production at the LHC.
出处 《商丘师范学院学报》 CAS 2008年第3期54-58,共5页 Journal of Shangqiu Normal University
基金 国家自然科学基金资助课题(基金名:高能对撞机上新物理模型的实验检验 批准号:10375017)
关键词 顶色辅助的人工色模型 强子对撞机 极化 修正 top-color-assisted technicolor model hadron colliders polarization corrections
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参考文献11

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