Takahiro Yamamoto Thesis Defense 2/21/17

Thesis Defense

Takahiro Yamamoto

Tuesday, February 21, 2017
12:00PM (206 JFB)

Title: A Theory of Supersymmetric Dark Matter

Dark matter is a prominent and the most dominant form of matter in the Universe. Yet, despite various intense efforts, its non-gravitational effect has not been observed. In this dissertation, we explore nature of such elusive particle within the supersymmetric SU(3)C • SU(2)L • U(1)Y gauge theory. In particular, we illustrate our model, in which electroweak-scale dark matter has interactions with the standard model sector via relatively light charged scalars with the large chiral mixing and CP-violation, leads to the enhanced dark matter pair annihilation, and is severely tested by the precise measurements of leptonic dipole moments. We then show that our model satisfies all constraints, including the observed thermal relic density and detection of dark matter annihilation products such as γ-ray and e• flux, and that it provides distinctive γ-ray signals, which could potentially be investigated in the near future.

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