Speakers
Description
Since neutrinos were first proposed by Pauli, their mass has been a subject of intense theoretical and experimental research. These were postulated as massless particles due to the non-existence of right-hand neutrinos. Now that the existence of the mass of neutrinos has been proven, we are motivated to investigate the different ways in which it can be generated.
A Dirac seesaw type II model is proposed to obtain the small masses of neutrinos by extending the visible content of the standard model (SM) with a hidden sector consisting of a scalar singlet $ S $ and three neutrinos right singlets $ (\nu_{R_1}, \nu_{R_2}, \nu_{R_3})$. These right singlet neutrinos are charged under a new symmetry $ U(1)_ {B-L}$. In addition, it is necessary to add two heavy scalar doublets to play the role of messenger between the visible sector (SM) and the invisible sector (neutrinos singlets and singlet).