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arXiv 1503.03098hep-ph
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用图解法计算双圈Higgs质量

Two-loop Higgs mass calculation from a diagrammatic approach

M. Goodsell, K. Nickel, F. Staub

摘要:

我们计算的修正希格斯玻色子的质量限制在一般理论的情况下,无质量的规范玻色子(规范极限)。我们提出的双回路蝌蚪图的解析表达式,和相应的表达式为零的希格斯粒子的自能量的动量极限,相当于二阶导数的双回路有效势。我们描述了在SARAH,它允许一个有效的,准确的和快速的评价通用理论的实施。在附录中,我们给出了在有质量规范玻色子情况下蝌蚪图的表达式。

英文摘要:

We calculate the corrections to the Higgs mass in general theories restricted to the case of massless gauge bosons (the gaugeless limit). We present analytic expressions for the two-loop tadpole diagrams, and corresponding expressions for the zero-momentum limit of the Higgs self energies, equivalent to the second derivative of the two-loop effective potential. We describe the implementation in SARAH, which allows an efficient, accurate and rapid evaluation for generic theories. In the appendix, we provide the expressions for tadpole diagrams in the case of massive gauge bosons.

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