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arXiv 1007.3027nucl-exhep-exhep-ph
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中子衰变实验对非标准模型物理的影响

Impact of Neutron Decay Experiments on non-Standard Model Physics

G. Konrad, W. Heil, S. Baeßler, D. Počanić, F. Glück

备注：
13 pages, 6 figures; Proceedings of the 5th International BEYOND 2010 Conference, Cape Town, South Africa (2010), World Scientific, accepted for publication; Corrected typos
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摘要：

从中子β衰变的两个参数出发，简要介绍了标准模型（SM）之外的物理学极限的现状和未来。由于有两个以上的观测量是可达的，所以这个问题是超定的。因此，在中子衰变的相关性的精确测量可以用来研究SM，以及寻找可能的扩展它的证据。在这种情况下，特别感兴趣的是右手电流或标量和张量相互作用的搜索。中子衰变观测值的精确测量解决了粒子物理学和宇宙学的重要开放问题，并且通常是对高能物理学中SM之外的新物理学的直接搜索的补充。因此，自由中子衰变是一个非常活跃的领域，世界各地正在进行一些新的测量。我们介绍了最近事态发展的影响。

英文摘要：

This paper gives a brief overview of the present and expected future limits on physics beyond the Standard Model (SM) from neutron beta decay, which is described by two parameters only within the SM. Since more than two observables are accessible, the problem is over-determined. Thus, precise measurements of correlations in neutron decay can be used to study the SM as well to search for evidence of possible extensions to it. Of particular interest in this context are the search for right-handed currents or for scalar and tensor interactions. Precision measurements of neutron decay observables address important open questions of particle physics and cosmology, and are generally complementary to direct searches for new physics beyond the SM in high-energy physics. Free neutron decay is therefore a very active field, with a number of new measurements underway worldwide. We present the impact of recent developments.

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