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CAS Key Laboratory of Theoretical Physics
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Institute of Theoretical Physics
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Chinese Academy of Sciences
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Seminar
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Title
题目
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| Simplified dark matter models with loop effects in direct detection and the constraints from indirect detection and collider search |
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Speaker
报告人
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Affiliation
所在单位
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东南大学物理学院 |
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Date
日期
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2019年10 月 22 日(周二)下午 4:00 |
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Venue
地点
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ITP South Building 6420
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Abstract
摘要
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We reexamine the simplified dark matter (DM) models with fermionic DM particle and spin-0 mediator. The DM-nucleon scattering cross sections of these models are low-momentum suppressed at tree-level, but receive sizable loop-induced spin-independent contribution. We perform one-loop calculation for scalar-type and twist-2 DM-quark operators and complete two-loop calculation for scalar-type DM-gluon operator. By analyzing the loop-level contribution from new operators, we find that future direct detection experiments can be sensitive to a fraction of parameter space. The indirect detection and collider search also provide complementary constraints on these models.
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Contact Person
所内联系人
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