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 1107.1305hep-ph
收藏

在线性对撞机上一般的双Higgs偶态模型中单圈希格斯玻色子的产生:e+e-vs. gamma-gamma

One-loop Higgs boson production at the Linear Collider within the general two-Higgs-doublet model: e+e- versus gamma-gamma

Joan Sola, David Lopez-Val

摘要:

本文对一般双希格斯偶态模型(2 HDM)下线性对撞机产生单圈希格斯玻色子玻色子的现象学进行了综述。首先,我们报告了在O(α ^3_{ew})处由e+e碰撞产生的希格斯玻色子玻色子对和相关的希格斯-Z玻色子。对于Ecm=0.5 TeV,这些通道提供的截面在10-100 fb的范围内,并表现出潜在的大辐射修正(50%的量级),其起源可以追溯到三重希格斯玻色子玻色子自相互作用的真正增强能力。接下来,我们考虑环诱导的直接γ-γ散射产生单个希格斯玻色子玻色子。我们挑选出相当大的偏离相应的速率在标准模型,这再次相关的商标动力学特征的2 HDM-即平衡的非标准希格斯/规范,希格斯/费米子和希格斯自相互作用导致相当大的(破坏性)的干扰效应。这种量子效应模式在MSSM中是无与伦比的,因此可以提供非超对称希格斯玻色子物理学的独特足迹。这两种计算都是在一个共同的,带到最新的框架内重新审视,特别是包括最严格的界限从酉和风味物理。

英文摘要:

We present an updated overview on the phenomenology of one-loop Higgs boson production at Linear Colliders within the general Two-Higgs-Doublet Model (2HDM). First we report on the Higgs boson pair production, and associated Higgs-Z boson production, at O(alpha^3_{ew}) from e+e- collisions. These channels furnish cross-sections in the range of 10-100 fb for Ecm=0.5 TeV and exhibit potentially large radiative corrections (of order 50%), whose origin can be traced back to the genuine enhancement capabilities of the triple Higgs boson self-interactions. Next we consider the loop-induced production of a single Higgs boson from direct gamma-gamma scattering. We single out sizable departures from the corresponding rates in the Standard Model, which are again correlated to trademark dynamical features of the 2HDM -- namely the balance of the non-standard Higgs/gauge, Higgs/fermion and Higgs self-interactions leading to sizable (destructive) interference effects. This pattern of quantum effects is unmatched in the MSSM, and could hence provide distinctive footprints of non-supersymmetric Higgs boson physics. Both calculations are revisited within a common, brought-to-date framework and include, in particular, the most stringent bounds from unitarity and flavor physics.

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。

↑