TADPOLE DIAGRAM,ΔI=1/2 ENHANCEMENT AND ε′/ε

ZHU Zhong-Yuan; ZHANG Bo

Chinese Physics C> 1988, Vol. 12> Issue(1) : 50-54

TADPOLE DIAGRAM,ΔI=1/2 ENHANCEMENT AND ε′/ε

ZHU Zhong-Yuan ^, ,
ZHANG Bo

Institute of Theoretical Physics,Academia Sinica,Beijing

Abstract
HTML
Reference
Related

PDF

Abstract：
The contributions of tadpole diagrams including t and c quark intermediate states to the amplitude of K⁰→2π and ε′/ε are analysed.The result shows it is quite possible that their contributions are the most important ones.They may give enough ΔI=1/2 enhancement for a reasonable quark relative momentum cutoff value which depends on K⁰ wave function.However,the calcualation value of │ε′/ε│ is too large if we suppose all CP violation effects come from the,Kobayashi-Maskawa phase δ. Perhaps,One approach to solve this difficulty is to assume the ε comes mainly from superweak CP violation.

References

[1]

L. L. Chau, Phys. Rep., 95(1983), 12.[2] G. Feinberg, P. Kabir and S. Weinberg, Phys. Rev. Lett., 3(1959), 527.[3] B. H. J . Mckellar and M. D. Seadron, Phys. Rev.,D27(1983), 157.[4] Z. Y. Zhu, et al. Aromic Energy (in Chinese) 3(1966); Freund, Phys. Lett. 15(1965), 352.[5] M. D. Scadron, Rep. Prog. Phys., 44(1981), 241.[6] J . F. Donoghue and B. R. Holstein, Phys. Rev. D29(1984), 2086.[7] J. F. Donoghue, Phys. Rep., 131(1986), 392.[8] M. Aguilar-Benitez, et. Phys. Lett., 170B(1986), 1.[9] S. Weinberg, Phys. Rev. Lett., 31(1976), 657.

Access

Get Citation

ZHU Zhong-Yuan and ZHANG Bo. TADPOLE DIAGRAM,ΔI=1/2 ENHANCEMENT AND ε′/ε[J]. Chinese Physics C, 1988, 12(1): 50-54.

ZHU Zhong-Yuan and ZHANG Bo. TADPOLE DIAGRAM,ΔI=1/2 ENHANCEMENT AND ε′/ε[J]. Chinese Physics C, 1988, 12(1): 50-54. shu

RIS(for EndNote,Reference Manager,ProCite)

BibTex

Txt

Milestone

Received: 1900-01-01
Revised: 1900-01-01

Article Metric

Article Views(3667)
PDF Downloads(491)
Cited by(0)

Policy on re-use

To reuse of subscription content published by CPC, the users need to request permission from CPC, unless the content was published under an Open Access license which automatically permits that type of reuse.

通讯作者: 陈斌, bchen63@163.com

1.
沈阳化工大学材料科学与工程学院沈阳 110142

TADPOLE DIAGRAM,ΔI=1/2 ENHANCEMENT AND ε′/ε

ZHU Zhong-Yuan ^,
ZHANG Bo

Corresponding author: ZHU Zhong-Yuan,

Institute of Theoretical Physics,Academia Sinica,Beijing

Received Date: 1900-01-01
Accepted Date: 1900-01-01
Available Online: 1988-02-05

Abstract: The contributions of tadpole diagrams including t and c quark intermediate states to the amplitude of K⁰→2π and ε′/ε are analysed.The result shows it is quite possible that their contributions are the most important ones.They may give enough ΔI=1/2 enhancement for a reasonable quark relative momentum cutoff value which depends on K⁰ wave function.However,the calcualation value of │ε′/ε│ is too large if we suppose all CP violation effects come from the,Kobayashi-Maskawa phase δ. Perhaps,One approach to solve this difficulty is to assume the ε comes mainly from superweak CP violation.