| Original Articles |
|
|
|
|
K →πvv: New Contributions from Unit-Charged Scalars in Topcolor-Assisted Technicolor Models |
| XIAO Zhen-jun |
| Department of Physics, He’nan Normal University, Xinxiang 453002
Department of Physics, Peking University, Beijing 100871
|
|
| Cite this article: |
|
XIAO Zhen-jun 1999 Chin. Phys. Lett. 16 712-714 |
|
|
|
Abstract We calculate the new contributions to the rare K-decays K+→π+vv and KL →π0 vv from the unit-charged scalars appearing in the topcolor-assisted technicolor models. By using the square-root ansatz for the mixing matrices DL and DR, we find that: (a) the new contributions from top-pions π± and b-pions H± dominate over that from ordinary technipions π1 and π8; (b) for ats*RatdR = -1/4, the enhancements to the ratios B(K+→π±vv ) and B(KL →π0 vv ) from new scalars can be as large as a factor 7 and 11, respectively; (c) the theoretical predictions are still consistent with the data after including the new contributions.
|
| Keywords:
12.60.Nz
12.15.Ji
13.20.Jf
|
|
|
Published: 01 October 1999
|
|
| PACS: |
12.60.Nz
|
(Technicolor models)
|
| |
12.15.Ji
|
(Applications of electroweak models to specific processes)
|
| |
13.20.Jf
|
(Decays of other mesons)
|
|
|
|
|
|
|
Viewed |
|
|
|
Full text
|
|
|
|
|
Abstract
|
|
|
|
|
