arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1607.05040hep-phastro-ph.CO
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电弱双重态暗物质的有效理论

Effective Theory for Electroweak Doublet Dark Matter

Athanasios Dedes, Dimitrios Karamitros, Vassilis C. Spanos

摘要:

我们详细研究了一个有效场论,其中包括由一对具有相反超荷的Weyl费米SU(2)-偶线扩展的标准模型粒子内容。离散的对称性保证了双重态成分的线性组合是稳定的,可以作为暗物质的候选粒子。暗扇区费米子通过可重整化的$d=4$算符和不可重整化的$d=5$算符与希格斯玻色子和规范玻色子相互作用。我们研究对撞机,宇宙学和天体物理学的探测,这个有效的理论暗物质。我们发现,一个WIMP的质量附近的电弱尺度,从而观察到在大型强子对撞机,是一致的碰撞和天体物理数据,只有当相当大的磁偶极矩跃迁运营商的规范玻色子存在,连同温和汤川相互作用。

英文摘要:

We perform a detailed study of an effective field theory which includes the Standard Model particle content extended by a pair of Weyl fermionic SU(2)-doublets with opposite hypercharges. A discrete symmetry guarantees that a linear combination of the doublet components is stable and can act as a candidate particle for Dark Matter. The dark sector fermions interact with the Higgs and gauge bosons through renormalizable $d=4$ operators, and non-renormalizable $d=5$ operators that appear after integrating out extra degrees of freedom above the TeV scale. We study collider, cosmological and astrophysical probes for this effective theory of Dark Matter. We find that a WIMP with a mass nearby to the electroweak scale, and thus observable at LHC, is consistent with collider and astrophysical data only when fairly large magnetic dipole moment transition operators with the gauge bosons exist, together with moderate Yukawa interactions.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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