How well do we need to measure the Higgs boson mass and self-coupling?
How well do we need to measure the Higgs boson mass and self-coupling?
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DOI：
10.1103/physrevd.88.055024
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发表时间：
2013-05
影响因子：
5
通讯作者：
Rick S. Gupta;H. Rzehak;J. Wells
中科院分区：
文献类型：
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作者：
Rick S. Gupta;H. Rzehak;J. Wells
关于希格斯玻色子质量和自耦合的未来测量的大部分讨论都集中在各种对撞机选项可以做得多好。在这篇文章中，我们提出了一个基于物理学的问题，即我们需要对撞机来测量这些量对新物理学的发现产生多大的影响，或者对我们如何理解希格斯玻色子在自然界中的作用产生多大的影响。我们在标准模型的框架内解决这个问题，并超越标准模型的各种场景，包括超对称性和复合希格斯玻色子的理论。我们的结论是，大型强子对撞机的声明能力，测量希格斯玻色子优于150兆电子伏将尽可能好，我们将永远需要知道希格斯玻色子的质量在可预见的未来。另一方面，我们估计自耦合可能需要测量到优于20%才能看到与标准模型预期的偏差。这对未来的对撞机和升级方案来说是一个具有挑战性的目标。
Much of the discussion regarding future measurements of the Higgs boson mass and self-coupling is focussed on how well various collider options can do. In this article we ask a physics-based question of how well do we need colliders to measure these quantities to have an impact on discovery of new physics or an impact in how we understand the role of the Higgs boson in nature. We address the question within the framework of the Standard Model and various beyond the Standard Model scenarios, including supersymmetry and theories of composite Higgs bosons. We conclude that the LHC’s stated ability to measure the Higgs boson to better than 150 MeV will be as good as we will ever need to know the Higgs boson mass in the foreseeable future. On the other hand, we estimate that the self-coupling will likely need to be measured to better than 20% to see a deviation from the Standard Model expectation. This is a challenging target for future collider and upgrade scenarios.