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(Seminar)Simplified dark matter models with loop effects in direct detection and the constraints from indirect detection and collider search
2019-10-22  【 】【打印】【关闭

CAS Key Laboratory of Theoretical Physics

Institute of Theoretical Physics

Chinese Academy of Sciences

Seminar

Title

题目

Simplified dark matter models with loop effects in direct detection and the constraints from indirect detection and collider search

Speaker

报告人

吴培文

Affiliation

所在单位

东南大学物理学院

Date

日期

2019年10 月 22 日(周二)下午 4:00

Venue

地点

ITP South Building 6420

Abstract

摘要

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.

Contact Person

所内联系人

杨金民
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