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research article

On the Role of Low-Energy CP Violation in Leptogenesis

Blanchet, Steve  
•
Fileviez Perez, Pavel
2008
Modern Physics Letters A

The link between low-energy CP violation and leptogenesis became more accessible with the understanding of flavor effects. However, a definite well-motivated model where such a link occurs was still lacking. Adjoint SU(5) is a simple grand unified theory where neutrino masses are generated through the Type I and Type III seesaw mechanisms, and the lepton asymmetry is generated by the fermionic triplet responsible for the Type III seesaw. We focus exclusively on the case of inverted hierarchy for neutrinos, and we show that successful flavored leptogenesis in this theory strongly points towards low-energy CP violation. Moreover, since the range of allowed masses for the triplet is very restricted, we find that the discovery at the LHC of new states present in the theory, together with proton decay and unification of gauge couplings, can conspire to provide a hint in favor of leptogenesis.

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Type
research article
Author(s)
Blanchet, Steve  
Fileviez Perez, Pavel
Date Issued

2008

Published in
Modern Physics Letters A
Volume

24

Issue

18

Start page

1399

End page

1409

Editorial or Peer reviewed

REVIEWED

Written at

OTHER

EPFL units
ITP  
Available on Infoscience
February 12, 2012
Use this identifier to reference this record
https://infoscience.epfl.ch/handle/20.500.14299/77667
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