CAST对轴子-电子耦合的限制
太阳与恒星天体物理
2015-02-02 v2 高能物理 - 唯象学
摘要
在非强子轴子模型中，存在树级轴子-电子相互作用，太阳通过轫致辐射、康普顿散射和轴子复合（即“BCA过程”）产生强轴子通量。基于对这一通量的新计算（首次包含轴子复合），我们利用CAST第一阶段数据（真空阶段）推导出对轴子-电子汤川耦合g_ae和轴子-光子相互作用强度g_ag的限制。对于m_a < 10 meV/c²，我们在95%置信水平下得到g_ag × g_ae < 8.1 × 10⁻²³ GeV⁻¹。我们强调，下一代轴子日冕仪（如提议的IAXO）可以将这一灵敏度推至超越恒星能量损失极限的范围，并检验白矮星冷却由轴子发射主导的假说。
引用
@article{arxiv.1302.6283,
title = {CAST constraints on the axion-electron coupling},
author = {K. Barth and A. Belov and B. Beltran and H. Brauninger and J. M. Carmona and J. I. Collar and T. Dafni and M. Davenport and L. Di Lella and C. Eleftheriadis and J. Englhauser and G. Fanourakis and E. Ferrer Ribas and H. Fischer and J. Franz and P. Friedrich and J. Galan and J. A. Garcia and T. Geralis and I. Giomataris and S. Gninenko and H. Gomez and M. D. Hassinoff and F. H. Heinsius and D. H. H. Hoffmann and I. G. Irastorza and J. Jacoby and K. Jakovcic and D. Kang and K. Konigsmann and R. Kotthaus and K. Kousouris and M. Krcmar and M. Kuster and B. Lakic and A. Liolios and A. Ljubicic and G. Lutz and G. Luzon and D. W. Miller and T. Papaevangelou and M. J. Pivovaroff and G. Raffelt and J. Redondo and H. Riege and A. Rodriguez and J. Ruz and I. Savvidis and Y. Semertzidis and L. Stewart and K. Van Bibber and J. D. Vieira and J. A. Villar and J. K. Vogel and L. Walckiers and K. Zioutas},
journal= {arXiv preprint arXiv:1302.6283},
year = {2015}
}