A Caltech Library Service

Baryogenesis via Leptogenesis: Spontaneous B and L Violation

Fileviez Pérez, Pavel and Murgui, Clara and Plascencia, Alexis D. (2021) Baryogenesis via Leptogenesis: Spontaneous B and L Violation. . (Unpublished)

[img] PDF - Submitted Version
Creative Commons Attribution.


Use this Persistent URL to link to this item:


In order to address the baryon asymmetry in the Universe one needs to understand the origin of baryon (B) and lepton (L) number violation. In this article, we discuss the mechanism of baryogenesis via leptogenesis to explain the matter-antimatter asymmetry in theories with spontaneous breaking of baryon and lepton number. In this context, a lepton asymmetry is generated through the out-of-equilibrium decays of right-handed neutrinos at the high-scale, while local baryon number must be broken below the multi-TeV scale to satisfy the cosmological bounds on the dark matter relic density. We demonstrate how the lepton asymmetry generated via leptogenesis can be converted in two different ways: a) in the theory predicting Majorana dark matter the lepton asymmetry is converted into a baryon asymmetry, and b) in the theory with Dirac dark matter the decays of right-handed neutrinos can generate lepton and dark matter asymmetries that are then partially converted into a baryon asymmetry. Consequently, we show how to explain the matter-antimatter asymmetry, the dark matter relic density and neutrino masses in theories for local baryon and lepton number.

Item Type:Report or Paper (Discussion Paper)
Related URLs:
URLURL TypeDescription Paper
Fileviez Pérez, Pavel0000-0001-7201-5840
Murgui, Clara0000-0002-7087-4796
Plascencia, Alexis D.0000-0001-6393-4802
Additional Information:Attribution 4.0 International (CC BY 4.0). The work of P.F.P. has been supported by the U.S. Department of Energy, Office of Science, Office of High Energy Physics, under Award Number de-sc0020443. This material is based upon work supported by the U.S. Department of Energy, Office of Science, Office of High Energy Physics, under Award Number DE-SC0011632. C.M. thanks the support provided by the Walter Burke Institute for Theoretical Physics.
Group:Walter Burke Institute for Theoretical Physics
Funding AgencyGrant Number
Department of Energy (DOE)DE-SC0020443
Department of Energy (DOE)DE-SC0011632
Walter Burke Institute for Theoretical Physics, CaltechUNSPECIFIED
Record Number:CaltechAUTHORS:20210409-071052298
Persistent URL:
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:108667
Deposited By: Tony Diaz
Deposited On:09 Apr 2021 18:45
Last Modified:09 Apr 2021 18:45

Repository Staff Only: item control page