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arXiv 1002.1694hep-ph
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顶夸克衰变对Unhiggs模型的限制

Constraints on the Unhiggs Model from Top Quark Decay

David Stancato, John Terning

摘要:

在Unhiggs模型中计算了顶夸克的衰变率。在这个模型中,由于它们的戈德斯通玻色子性质,纵向极化的W是非粒子,而横向极化的W不是。因此,发射纵向W的衰变分数不同于标准模型。将此计算与CDF数据进行比较,我们能够排除一些Unhiggs模型参数空间。我们还使用预期增加的精度顶部衰变测量在大型强子对撞机,以预期进一步的约束Unhiggs。

英文摘要:

We compute the top quark decay rate in the Unhiggs model. In this model, the longitudinally polarized W's are unparticles, owing to their Goldstone boson nature, while the transversely polarized W's are not. Thus the fraction of decays with a longitudinal W emitted is different than in the Standard Model. Comparing this calculation to CDF data, we are able to rule out some of the Unhiggs model parameter space. We also use the expected increased accuracy of top decay measurements at the LHC to anticipate further constraints on the Unhiggs.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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