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arXiv 1202.2552hep-ph
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寻找希格斯玻色子的奇异方法

Singular ways to search for the Higgs boson

A. De Rújula, A. Galindo

摘要:

基于LEP、Tevatron和LHC的数据,以及相关理论计算的先进性,基本标准标量的发现或排除是一个热门话题。根据强子对撞机目前的统计数据,在所有相关的H质量下,主力衰变通道是H到WW,其次是W到轻轻子。使用相空间奇异性技术,我们构建和研究了过多的“奇异变量”,以方便分离信号和背景的困难任务,并测量推定信号的质量。最简单的奇异变量不是不变的助推下沿对撞机的轴和模拟其分布需要一个很好的理解部分子分布函数,也许不是一个严重的缺点,在玻色子狩猎季节。纵向助推不变变量的推导是相当复杂的,它是共享这种不变性的四个带电轻子观测量的函数。但它们的使用很简单,而且在运动学意义上,它们是最佳的。

英文摘要:

The discovery or exclusion of the fundamental standard scalar is a hot topic, given the data of LEP, the Tevatron and the LHC, as well as the advanced status of the pertinent theoretical calculations. With the current statistics at the hadron colliders, the workhorse decay channel, at all relevant H masses, is H to WW, followed by W to light leptons. Using phase-space singularity techniques, we construct and study a plethora of "singularity variables" meant to facilitate the difficult tasks of separating signal and backgrounds and of measuring the mass of a putative signal. The simplest singularity variables are not invariant under boosts along the collider's axes and the simulation of their distributions requires a good understanding of parton distribution functions, perhaps not a serious shortcoming during the boson hunting season. The derivation of longitudinally boost-invariant variables, which are functions of the four charged-lepton observables that share this invariance, is quite elaborate. But their use is simple and they are, in a kinematical sense, optimal.

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。

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