Neutron beta-decay, Standard Model and cosmology

Details Neutron beta-decay, Standard Model and cosmology Neutron beta-decay, Standard Model and cosmology

2006-11-22

arxiv.org/abs/nucl-ex/0611038v2

Phys.Lett.B650:321-324,2007

Physics

Nuclear Physics

Nuclear Experiment

14 pages, 3 figures

Scientific paper

10.1016/j.physletb.2007.05.047

The precise value of the neutron lifetime is of fundamental importance to particle physics and cosmology. The neutron lifetime recently obtained, 878.5 +/- 0.7stat +/- 0.3sys s, is the most accurate one to date. The new result for the neutron lifetime differs from the world average value by 6.5 standard deviations. The impact of the new result on testing of Standard Model and on data analysis for the primordial nucleosynthesis model is scrutinized.

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