伪标量希格斯玻色子生产的下一层次(QCD) 修正
高能物理 - 唯象学
2009-11-07 v2
摘要
我们计算了伪标量希格斯(Higgs A) 生产在大型强子对撞机上的微分分布 的完整下一层次(NLO) QCD 修正。该计算采用有效拉格朗日方法完成，有效条件为伪标量希格斯玻色子质量 及其横向动量 不超过顶夸克质量 。分布的形状几乎与标量希格斯(H) 生产的结果一致，因为除了整体耦合常数和质量外，标量与伪标量生产的微分分布之间仅存在小差别。因此，辐射微分分布的差异主要归因于描述伪标量希格斯与顶夸克耦合的未知混合角 。
引用
@article{arxiv.hep-ph/0210369,
title = {NLO corrections to differential cross sections for pseudo-scalar Higgs boson production},
author = {B. Field and J. Smith and M. E. Tejeda-Yeomans and W. L. van Neerven},
journal= {arXiv preprint arXiv:hep-ph/0210369},
year = {2009}
}
备注
9 pages, LaTeX, 3 Postscript figures In the previous version we have forgotten to include contributions which arrise from interferences between graphs containing vertices corresponding to the operator $O_2(x)$ in Eq. (3) with graphs originating from the operator $O_1(x)$. These interferences occur because of the prescription for the Levi-Civita tensor given in our paper. These extra contributions are added to Eqs. (19) and (20). Numerically they are completely negligible so that the figures are not altered