Dear Patrick,
I also had a closer look at the paper. I have only a few issues:
l. 19: a la Niels I think having a figure here is indispensable. Because seeing why b->edubar and b->duubar should interfere is by no means obvious, even to fellow particle physicists.
l29-33: the link from T-violating to CP-violating observables is made without even mentioning the CPT theorem! That is of course VERY sloppy! What is defined in are really the T-odd and then P-odd or P-even observables. You need to ASSUME CPT-invariance to make that into a CP-violating observable.
l.36-39: there is such a thing as a strong-CP phase, which is connected to the so-called theta-bar term. I doubt it that this is what is meant here with “strong” phase. The whole argument here requires too much thought. Can it be made simpler so that it can be made clearer what the point actually is?
Greetings,
Gerco