Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2011-02-08
Phys.Rev.D83:075007,2011
Physics
High Energy Physics
High Energy Physics - Phenomenology
20 pages
Scientific paper
10.1103/PhysRevD.83.075007
Because 4-dimensional CP is a good symmetry of many higher-dimensional theories, this suggests the possible existence of a universal CP-violating phase originating from the process of compactification. Such a phase, if it existed, would not be easy to uncover since the phases in Yukawa matrices are not simply related to the observed CKM phase $\delta$. Hierarchical Yukawa models of the type arising in F-theory GUT models provide an interesting exception. Recently, Heckman and Vafa studied a particular F-theory GUT model with hierarchical Yukawa matrices with complex phases of O(1) and showed, by examining the Jarlskog invariant, that this model leads to $\sin \delta \sim O(1)$. A more detailed examination of the model, although confirming their result, is seen to be also compatible with having a phase $\delta_o= \pi/3$ imprinted on the Hermitian Yukawa matrices, leading to $\sin \delta \simeq \sin \delta_o$.
No associations
LandOfFree
CP Violation in Hierarchical Yukawa Models does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with CP Violation in Hierarchical Yukawa Models, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and CP Violation in Hierarchical Yukawa Models will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-502935