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arXiv 1004.4117hep-ph
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电弱Sudakov对数与TeV区的实规范玻色子辐射

Electroweak Sudakov Logarithms and Real Gauge-Boson Radiation in the TeV Region

G. Bell, J. H. Kuhn, J. Rittinger

摘要:

电弱辐射修正在TeV区域产生大的负的、双能级增强的修正。这些部分补偿的真实辐射,而且,通过选择同位旋非不变的外部状态的影响。通过考虑不同的限制末态组态,我们更定量地研究了真实规范玻色子辐射的影响。我们依次考虑了有质量阿贝尔规范理论、自发破缺SU(2)理论和电弱标准模型。我们发现,相空间切割的选择的细节,特别是是否包括共线和软辐射的一小部分,有很大的影响的相对量的真实和虚拟的校正。

英文摘要:

Electroweak radiative corrections give rise to large negative, double-logarithmically enhanced corrections in the TeV region. These are partly compensated by real radiation and, moreover, affected by selecting isospin-noninvariant external states. We investigate the impact of real gauge boson radiation more quantitatively by considering different restricted final state configurations. We consider successively a massive abelian gauge theory, a spontaneously broken SU(2) theory and the electroweak Standard Model. We find that details of the choice of the phase space cuts, in particular whether a fraction of collinear and soft radiation is included, have a strong impact on the relative amount of real and virtual corrections.

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