氘子永久电偶极矩的首次实验限
核实验
2026-04-29 v2
摘要
永久电偶极矩（EDM）为探测标准模型之外的物理提供了敏感的探针，与额外的CP违背源直接相关，这些源可能解释宇宙中物质-反物质不对称性。存储环中带电粒子的EDM测量依赖于检测不变自旋轴相对于环面small的倾斜。在本工作中，我们呈现了确定COoler SYnchrotron（COSY）中氘子自旋轴的实验测量结果，这是一种常规磁存储环，采用射频Wien滤波器、超导Siberian蛇和电子冷却磁筒的组合。测量结果显示几毫弧度的倾斜，这些倾斜受系统误差主导。从观察到的倾斜，我们推导出氘子EDM的首次实验限，。本结果表明了使用存储环搜索带电稳定强子EDM的可行性，并为未来的专用设施奠定了基础。
引用
@article{arxiv.2602.20828,
title = {First Experimental Limit on the Permanent Electric Dipole Moment of the Deuteron},
author = {A. Andres and V. Hejny and A. Nass and N. N. Nikolaev and J. Pretz and F. Rathmann and V. Shmakova and J. Slim and F. Abusaif and A. Aggarwal and A. Aksentev and B. Alberdi and L. Barion and I. Bekman and M. Beyß and C. Böhme and B. Breitkreutz and N. Canale and G. Ciullo and S. Dymov and N. -O. Fröhlich and R. Gebel and M. Gaisser and K. Grigoryev and D. Grzonka and D. Gu and D. Heberling and J. Hetzel and D. Hölscher and O. Javakhishvili and A. Kacharava and V. Kamerdzhiev and S. Karanth and I. Keshelashvili and A. Kononov and K. Laihem and A. Lehrach and P. Lenisa and N. Lomidze and B. Lorentz and G. Macharashvili and A. Magiera and M. Margos and D. Mchedlishvili and A. Melnikov and F. Müller and D. Okropiridze and A. Pesce and A. Piccoli and V. Poncza and D. Prasuhn and A. Saleev and D. Shergelashvili and R. Shankar and N. Shurkhno and S. Siddique and A. Silenko and H. Soltner and R. Stassen and E. J. Stephenson and H. Ströher and M. Tabidze and G. Tagliente and V. Tempel and Y. Valdau and M. Vitz and T. Wagner and A. Wirzba and A. Wrońska and P. Wüstner and M. Żurek},
journal= {arXiv preprint arXiv:2602.20828},
year = {2026}
}
备注
9 pages, 4 figures