Finite mass corrections in orbifold gauge theories
Finite mass corrections in orbifold gauge theories
复制标题
轨道折叠规范理论中的有限质量修正
DOI：
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发表时间：
2002
期刊：
影响因子：
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通讯作者：
M. Quirós
中科院分区：
文献类型：
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作者：
G. Gersdorff;N. Irges;M. Quirós
标准模型中的希格斯玻色子可以被认为是高维理论中规范玻色子的额外维度分量，其中规范群被轨道作用量破缺为标准模型群。在这种情况下，标准模型的对称性可以被细谷机制辐射破缺，而希格斯玻色子的质量可以被高维规范理论保护而不受体二次发散的影响，而不需要任何超对称性。然而，后者并不能保护先验的希格斯质量膜二次发散。我们通过在轨道S^1/Z_2中的显式计算表明，在单圈处不存在这种效应。此外，我们确定的对称性，保护这种膜质量项的所有订单微扰理论，从而保证了一个相应的质量counterterterm的情况下，
The Standard Model Higgs boson can be identified with the extra dimensional component of a gauge boson in a higher dimensional theory where the gauge group is broken to the Standard Model group by the orbifold action. In that case the Standard Model symmetry can be radiatively broken by the Hosotani mechanism and the Higgs boson mass is protected from bulk quadratic divergences by the higher dimensional gauge theory without any need of supersymmetry. However the latter does not protect a priori the Higgs mass from brane quadratic divergences. We show by an explicit calculation in the orbifold $S^1/Z_2$ that such effects are absent at one-loop. Moreover we identify the symmetry that protects such brane mass terms to all orders in perturbation theory and thus guarantees the absence of a corresponding mass counterterm