Chivukula R S, Hölbling C, Evans N
Department of Physics, Boston University, Boston, Massachusetts 02215, USA.
Phys Rev Lett. 2000 Jul 17;85(3):511-4. doi: 10.1103/PhysRevLett.85.511.
Precision electroweak data are generally believed to constrain the Higgs boson mass to lie below approximately 190 GeV at 95% confidence level. The standard Higgs model is, however, trivial and can only be an effective field theory valid below some high energy scale characteristic of the underlying nontrivial physics. Corrections to the custodial isospin violating parameter T arising from interactions at this higher energy scale dramatically enlarge the allowed range of Higgs mass. We perform a fit to precision electroweak data and determine the region in the (m(H),delta T) plane that is consistent with experimental results. Overlaying the estimated size of corrections to T arising from the underlying dynamics, we find that a Higgs mass up to 500 GeV is allowed.
精确的电弱数据通常被认为在95%置信水平下将希格斯玻色子质量限制在约190 GeV以下。然而，标准希格斯模型是平凡的，并且只能是在低于某些潜在非平凡物理的高能标度下有效的有效场论。在这个更高能标度下由相互作用引起的对破坏看守同位旋参数T的修正极大地扩大了希格斯质量的允许范围。我们对精确电弱数据进行拟合，并确定在（m(H)，δT）平面中与实验结果一致的区域。叠加由潜在动力学引起的对T的修正的估计大小，我们发现允许高达500 GeV的希格斯质量。
