arXivDaily arXiv每日学术速递 周一至周五更新
arXiv周末暂无论文更新,休息一下吧,周末愉快~~
arXiv 0901.2257hep-ph
收藏

在一般2 HDM中线性对撞机上通过规范玻色子聚变产生希格斯玻色子对

Higgs boson pair production through gauge boson fusion at linear colliders within the general 2HDM

Robert N. Hodgkinson, David Lopez-Val, Joan Sola

摘要:

在线性对撞机ILC和CLIC上,分析了一般双Higgs双重模型(2 HDM)中通过规范玻色子融合机制e^{+} e^{-} -> V* V* -> h h + X(V=W,Z)(h= h^0,H^0,A^0,H ^{ \pm })在α^4_{ew}级产生包含性希格斯玻色子对的情况.这类过程对三线性Higgs(3 H)玻色子自相互作用非常敏感,因此可以成为重建Higgs势的真正基石。例如,在1 TeV的ILC中,最有利的情况下产生的横截面大约为1 pb,因此每100 fb^{-1}的积分亮度需要10^5个事件,同时与3 H耦合的微扰性和么正性界限、电弱精确数据和BR(b->sγ)的约束完全一致。通过与其他竞争机制的比较,我们得出结论:在TeV级线性对撞机中,希格斯玻色子对事件可能是2 HDM参数空间的大范围内产生Higgs玻色子的主要特征,而在最小超对称标准模型中没有对应的事件.由于这些对撞机的环境非常干净,包容性的2 H事件应该允许舒适的标记,因此可能会为希格斯势的结构打开特权的新前景。

英文摘要:

Inclusive Higgs boson pair production through the mechanism of gauge boson fusion e^{+} e^{-} -> V* V* -> h h + X (V=W,Z) in the general Two-Higgs-Doublet Model (2HDM), with h=h^0,H^0,A^0,H^{\pm}, is analyzed at order α^4_{ew} in the linear colliders ILC and CLIC. This kind of processes is highly sensitive to the trilinear Higgs (3H) boson self-interactions and hence can be a true keystone in the reconstruction of the Higgs potential. For example, in the ILC at 1 TeV, the most favorable scenarios yield cross-sections up to roughly 1 pb, thus entailing 10^5 events per 100 fb^{-1} of integrated luminosity, whilst remaining fully consistent with the perturbativity and unitarity bounds on the 3H couplings, the electroweak precision data and the constraints from BR(b->sγ). Comparing with other competing mechanisms, we conclude that the Higgs boson-pair events could be the dominant signature for Higgs-boson production in the TeV-class linear colliders for a wide region of the 2HDM parameter space, with no counterpart in the Minimal Supersymmetric Standard Model. Owing to the extremely clean environment of these colliders, inclusive 2H events should allow a comfortable tagging and might therefore open privileged new vistas into the structure of the Higgs potential.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑