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arXiv 0710.5528hep-phhep-th
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Lee-Wick规范理论中的质量矢量散射

Massive Vector Scattering in Lee-Wick Gauge Theory

Benjamin Grinstein, Donal O'Connell, Mark B. Wise

摘要:

我们证明了描述非阿贝尔李-威克规范理论中纵向极化大质量矢量玻色子散射的振幅不随能量增长,因此满足微扰么正性的约束。这一结果与众所周知的带有非常重的希格斯粒子的标准模型中微扰么正性的破坏形成了对比。我们的结论对所有阶的微扰理论都是有效的,并且依赖于存在一个所有算子都是4维或更小维的微扰理论公式,这可以看作是对包含在微扰理论的高阶导数公式中的高维算子种类的一个限制.

英文摘要:

We demonstrate that amplitudes describing scattering of longitudinally polarized massive vector bosons present in non-Abelian Lee-Wick gauge theory do not grow with energy and, hence, satisfy the constraints imposed by perturbative unitarity. This result contrasts with the widely-known violation of perturbative unitarity in the standard model with a very heavy Higgs. Our conclusions are valid to all orders of perturbation theory and depend on the existence of a formulation of the theory in which all operators are of dimension four or less. This can be thought of as a restriction on the kinds of higher dimension operator which can be included in the higher derivative formulation of the theory.

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