Towards the verification of Pseudo-Nambu-Goldstone boson dark matter

概要

Pseudo-Nambu-Goldstone bosons (pNGBs) are considered theoretically very promising dark matter candidates because their symmetry structure naturally suppresses interactions with the Standard Model, making them highly consistent with the latest experimental constraints. However, due to their weak interactions, the verifiability of pNGB dark matter is extremely low, and a new approach is essential to prove its existence. This talk aims to overcome this dilemma by proposing a new minimal model that incorporates an “acceleration mechanism” within the dark sector.
While we found that the semi-annihilation mechanism itself did not provide sufficient acceleration, it successfully demonstrated the importance of such an acceleration mechanism for the direct detection of pNGB dark matter.

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