Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2004-06-02
Phys.Lett. B595 (2004) 442-452
Physics
High Energy Physics
High Energy Physics - Phenomenology
9 pages, latex
Scientific paper
10.1016/j.physletb.2004.06.066
We study diagonal and transition quark dipole operators in a class of extended technicolor (ETC) models, taking account of the multiscale nature of the ETC gauge symmetry breaking and of the mixing among ETC interaction eigenstates. Because of this mixing, terms involving the lowest ETC scale can play an important role in dipole operators, and we focus on these terms. We derive from experiment new correlated constraints on the quark mixing angles and phases. Our bounds yield information on mixing angles individually in the up- and down-sectors, for both left- and right-handed quark fields and thus constrain even quark mixing parameters that do not enter in the CKM matrix. With phases of order unity, we conclude that these mixing angles are small, constraining future ETC model building, but plausibly in the range suggested by the size of the CKM elements. These values still allow substantial deviations from the standard model predictions, in particular for several CP violating quantities, including the asymmetries in $b \to s \gamma$ and $B_{d} \to \phi K_S$, $Re(\epsilon^\prime/\epsilon)$, and the electric dipole moments of the neutron and the ${}^{199}$Hg atom.
Appelquist Thomas
Piai Maurizio
Shrock Robert
No associations
LandOfFree
Quark Dipole Operators in Extended Technicolor 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 Quark Dipole Operators in Extended Technicolor Models, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Quark Dipole Operators in Extended Technicolor Models will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-618090