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arXiv · hep-ph/0312007

Leptogenesis and a Jarlskog Invariant

Sacha Davidson·Ryuichiro Kitano
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Abstract

The relation between low energy CP violating phases, and the CP asymmetry of leptogenesis, $ε$, is investigated. Although it is known that in general those are independent, there may be a relation when a model is specified. We construct a Jarlskog invariant which is proportional to $ε$ if the right-handed neutrino masses are hierarchical. Since the invariant can be expressed in terms of left-handed neutrino parameters--some measurable, and some not--it is useful in identifying the limits in which $ε$ is related to MNS phases.

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Sacha Davidson, Ryuichiro Kitano. 2003-12-10. Leptogenesis and a Jarlskog Invariant. https://doi.org/10.1088/1126-6708%2F2004%2F03%2F020

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