4th IBS-MultiDark-IPPP Workshop

Session

Session 12

11 Oct 2019, 11:00

B438 (IBS-CTPU)

Conveners

Session 12

• Chang Sub Shin

27. Scalar dark matter interacting through an extra U (1) gauge interaction

Osamu Seto (Hokkaido University)

11/10/2019, 11:00

We propose models of a thermal relic DM with the present annihilation cross-section being very suppressed. This property can be realized in an extra U(1) gauge interacting complex scalar DM. We consider scalar dark matter in U(1)B−L,U(1)(B−L)3 and U(1)Lμ−Lτ extended models and identify viable parameter regions. We also discuss various implication to future DM detection experiments, the DM...

25. Flavourful axion phenomenology

Eung Jin Chun (KIAS)

11/10/2019, 11:30

We show how an accidental U(1) Peccei-Quinn symmetry can arise in a realistic Pati-Salam unified theory of flavour. A QCD axion arises from a linear combination of A4 triplet flavons, which are responsible for fermion flavour structures and thus specific flavour-violating couplings of the axion are predicted. Then, we discuss the phenomenology of a general flavourful axion and the prospect...