Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
1996-01-08
Phys.Lett. B385 (1996) 231-236; Erratum-ibid. B390 (1997) 451
Physics
High Energy Physics
High Energy Physics - Phenomenology
9 pages (Latex), 3 figures
Scientific paper
10.1016/0370-2693(96)00891-X
Strictly within the standard electro-weak interaction, CP violation in the flavour conserving process $\eta \rightarrow \pi + \pi $ could originate from the mixing of the $\eta$ meson with the virtual scalar Higgs boson $ H^{0}$ via $W$ and top quark exchange. The parity-violation carried by weak gauge bosons makes the mixing possible by quantum effect at two-loop level. Nowhere the Kobayashi-Maskawa (KM) phase mechanism is needed. The phenomenon reveals an unexpected new role of the Higgs boson in the CP symmetry breaking. For the Higgs mass between 100-600 GeV, the $\eta \rightarrow \pi +\pi $ branching ratio is found to be $3.6 \cdot 10^{-26} - 2.4 \cdot 10^{-29}$ , hence CP violation mechanisms beyond the Standard Model are the only ones that could give rise to its observation at existing or near future $\eta$ factories, unless the Higgs mass is improbably as light as 550 $MeV$.
Gourdin M.
Pham Xuan-Yem
No associations
LandOfFree
A new CP violation mechanism generated by the standard neutral Higgs boson : the $η\to π+ π$ case 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 A new CP violation mechanism generated by the standard neutral Higgs boson : the $η\to π+ π$ case, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and A new CP violation mechanism generated by the standard neutral Higgs boson : the $η\to π+ π$ case will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-703431