Generalized Jarlskog Invariants, Mass Degeneracies and Echelon Crosses

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Authors	BERING LARSEN Klaus
Year of publication	2021
Type	Article in Periodical
MU Faculty or unit	Faculty of Science
Citation
Web	https://arxiv.org/abs/2104.10585
Keywords	Matrix Algebra; Cabibbo-Kobayashi-Maskawa Matrix; Jarlskog Invariants; CP-conservation;
Description	It is known that the Cabibbo-Kobayashi-Maskawa (CKM) n×n matrix can be represented by a real matrix iff there is no CP-violation, and then the Jarlskog invariants vanish. We investigate sufficient conditions for the opposite statement to hold, paying particular attention to degenerate cases. We find that higher Jarlskog invariants are needed for n?4. One generic sufficient condition is provided by the existence of a so-called echelon cross.
Related projects:	Integrable deformations