UCNA对中子$\beta$-不对称参数$A_0$的新结果
核实验
2018-08-15 v2
摘要
中子衰变不对称参数定义了中子自旋与发射电子动量之间的关联，其决定了，即轴矢量与矢量弱耦合常数之比。UCNA实验位于洛斯阿拉莫斯中子科学中心的超冷中子设施，是首个利用超冷中子（UCN）测量此类关联系数的实验。在系统不确定度改善且统计量增加的条件下，我们报告新结果，得出。与先前UCNA结果合并并考虑相关系统不确定度后，得到以及。
引用
@article{arxiv.1712.00884,
title = {New result for the neutron $\beta$-asymmetry parameter $A_0$ from UCNA},
author = {M. A. -P. Brown and E. B. Dees and E. Adamek and B. Allgeier and M. Blatnik and T. J. Bowles and L. J. Broussard and R. Carr and S. Clayton and C. Cude-Woods and S. Currie and X. Ding and B. W. Filippone and A. Garcia and P. Geltenbort and S. Hasan and K. P. Hickerson and J. Hoagland and R. Hong and G. E. Hogan and A. T. Holley and T. M. Ito and A. Knecht and C. -Y. Liu and J. Liu and M. Makela and J. W. Martin and D. Melconian and M. P. Mendenhall and S. D. Moore and C. L. Morris and S. Nepal and N. Nouri and R. W. Pattie, and A. Perez-Galvan and D. G. Phillips and R. Picker and M. L. Pitt and B. Plaster and J. C. Ramsey and R. Rios and D. J. Salvat and A. Saunders and W. Sondheim and S. J. Seestrom and S. Sjue and S. Slutsky and X. Sun and C. Swank and G. Swift and E. Tatar and R. B. Vogelaar and B. VornDick and Z. Wang and J. Wexler and T. Womack and C. Wrede and A. R. Young and B. A. Zeck},
journal= {arXiv preprint arXiv:1712.00884},
year = {2018}
}
备注
9 pages, 7 figures, updated to as-published version