https://doi.org/10.1140/epjc/s10052-020-8053-0
Regular Article - Theoretical Physics
Parametrized leptogenesis from linear seesaw
1
School of Physics, Jiulonghu Campus, Southeast University, Nanjing, 211189, China
2
School of Physics and Astronomy, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai, 200240, China
* e-mail: phgu@seu.edu.cn
Received:
25
November
2019
Accepted:
16
May
2020
Published online:
2
June
2020
We present a purely linear seesaw mechanism in a mirror left-right symmetric framework and then realize a novel leptogenesis scenario for parametrizing the cosmic baryon asymmetry by the charged lepton masses, the light Majorana neutrino mass matrix and the heavy mirror charged lepton masses. Through the same Yukawa couplings, the lepton-number-conserving decays of the mirror charged leptons can generate three individual lepton asymmetries stored in the ordinary lepton flavors, while the lepton-number-violating processes for the Majorana neutrino mass generation can wash out part of these lepton asymmetries. The remnant lepton asymmetries then can be partially converted to a baryon asymmetry by the sphaleron processes.
© The Author(s), 2020
