CAST 使用 3He 缓冲气体搜寻亚电子伏特质量太阳轴子
高能物理 - 实验
2012-10-05 v2
摘要
CERN 轴子太阳望远镜（CAST）已通过使用 3He 作为缓冲气体扩展了其对太阳轴子的搜寻。在 T=1.8 K 的温度下，这允许设置更大的气压，从而比我们之前使用 4He 的测量能探测到更高的轴子质量。通过在 252 个不同气压设置下各采集约 1 小时的数据，我们扫描了轴子质量范围 0.39 eV < m_a < 0.64 eV。根据磁体指向太阳时没有观测到过量 X 射线，我们设定了轴子-光子耦合的典型上限为 g_ag < 2.3 x 10^{-10} GeV^{-1}（95% 置信水平），确切值取决于气压设置。KSVZ 轴子在我们质量范围的上端被排除，这是任何太阳轴子搜寻实验中的首次。未来我们将把搜寻扩展到 m_a < 1.15 eV，从而与宇宙学热暗物质界限舒适地重叠。
引用
@article{arxiv.1106.3919,
title = {CAST search for sub-eV mass solar axions with 3He buffer gas},
author = {M. Arik and S. Aune and K. Barth and A. Belov and S. Borghi and H. Bräuninger and G. Cantatore and J. M. Carmona and S. A. Cetin and J. I. Collar and T. Dafni and M. Davenport and C. Eleftheriadis and N. Elias and C. Ezer and G. Fanourakis and E. Ferrer-Ribas and P. Friedrich and J. Galán and J. A. García and A. Gardikiotis and E. N. Gazis and T. Geralis and I. Giomataris and S. Gninenko and H. Gómez and E. Gruber and T. Guthörl and R. Hartmann and F. Haug and M. D. Hasinoff and D. H. H. Hoffmann and F. J. Iguaz and I. G. Irastorza and J. Jacoby and K. Jakovčić and M. Karuza and K. Königsmann and R. Kotthaus and M. Krčmar and M. Kuster and B. Lakić and J. M. Laurent and A. Liolios and A. Ljubičić and V. Lozza and G. Lutz and G. Luzón and J. Morales and T. Niinikoski and A. Nordt and T. Papaevangelou and M. J. Pivovaroff and G. Raffelt and T. Rashba and H. Riege and A. Rodríguez and M. Rosu and J. Ruz and I. Savvidis and P. S. Silva and S. K. Solanki and L. Stewart and A. Tomás and M. Tsagri and K. van Bibber and T. Vafeiadis and J. Villar and J. K. Vogel and S. C. Yildiz and K. Zioutas},
journal= {arXiv preprint arXiv:1106.3919},
year = {2012}
}
备注
5 pages, 2 figures, updated author list, revised arguments, results unchanged