{ital CP} violation in the two-Higgs-doublet model: An example
- Department of Physics, Carnegie-Mellon University, Pittsburgh, Pennsylvania 15213 (United States)
In a general two-scalar-doublet model without fermions, there is a unique source of {ital CP} violation, {ital J}{sub 1}, in the gauge interactions of the scalars. It arises in the mixing of the three neutral physical scalars {ital X}{sub 1}, {ital X}{sub 2}, and {ital X}{sub 3}. $CP--- violation may be observed via different decay rates for {ital X}{sub 1}{r_arrow}{ital H}{sup +}{ital W}{sup {minus}} and {ital X}{sub 1}{r_arrow}{ital H}{sup {minus}}{ital W}{sup +} (or, alternatively, for {ital H}{sup +}{r_arrow}{ital X}{sub 1}{ital W}{sup +} and {ital H}{sup {minus}}{r_arrow}{ital X}{sub 1}{ital W}{sup {minus}}, depending on which decays are kinematically allowed). I compute the part of those {ital CP}-violating decay-rate differences which is proportional to {ital J}{sub 1}. The {ital CP}-invariant phase is provided by the absorptive parts of the one-loop diagrams. I check the gauge invariance of the whole calculation.
- Research Organization:
- Carnegie-Mellon University
- DOE Contract Number:
- FG02-91ER40682
- OSTI ID:
- 44786
- Journal Information:
- Physical Review, D, Vol. 51, Issue 9; Other Information: PBD: 1 May 1995
- Country of Publication:
- United States
- Language:
- English
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