Programme

P.38 -- Poster, VCTP-45

Date: Tuesday, 13 October 2020

Time: 08:30 - 10:00

Canonical seesaw implication for two-component dark matter

Phung Van Dong, Cao H. Nam, Duong Van Loi

High Energy Physics and Cosmology Laboratory, Phenikaa University

The seesaw mechanism is well motivated for explaining neutrino mass and baryon asymmetry. This work adds that it unravels the mystery of structured dark matter. The seesaw scale has a nontrivial physical vacuum structure that defines the usual matter parity and a new Z_3 symmetry, yielding a novel scenario of two-component dark matter. The component stabilized by matter parity populates the cold dark matter today, whereas the other component stabilized by Z_3 is boosted in cold dark matter annihilation successfully scattering on electrons in the XENON1T experiment. Here this fast dark matter has a large B-L charge strongly interacting with the normal matter causing the observed effect.

Presenter: Phung Van Dong

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