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Wu, YL; Wu, YL , Acad Sinica, Inst Theoret Phys, POB 2735, Beijing 100080, Peoples R China.
New prediction for the direct CP-violating parameter epsilon
Source PublicationPHYSICAL REVIEW D
KeywordAnomalous Dimension Matrix Weak Nonleptonic Decays 2-higgs-doublet Model K->pi-pi Decays 1/n-c Expansion Leading Order Epsilon Evolution Elements Anatomy
AbstractThe low-energy dynamics of QCD is investigated with special attention paid to the matching between QCD and chiral perturbation theory (ChPT), and also to some useful algebraic chiral operator relations which survive even when we include chiral loop corrections. It then allows us to evaluate the hadronic matrix elements below the energy scale Lambda (x) similar or equal to 1 GeV. Based on the new analyses, we present a consistent prediction for both the direct CP-violating parameter epsilon'/epsilon and the DeltaI=1/2 rule in kaon decays. In the leading 1/N-c approximation, the isospin amplitudes A(0) and A(2) are found to agree well with the data, and the direct CP-violating parameter epsilon'/epsilon is predicted to be large, which also confirms our earlier conclusion. Its numerical value is epsilon'/epsilon = 23.6(-7.8)(+12.4) x 10(-4)(Im lambda (t)/1.2 x 10(-4)) which is no longer sensitive to the strange quark mass due to the matching conditions. Taking into account a simultaneous consistent analysis on the isospin amplitudes A(0) and A(2) the ratio epsilon'/epsilon is in favor of the values epsilon'/epsilon = (20 +/- 9) x 10(-4).
2001
ISSN0556-2821
Volume64Issue:1Pages:-
Subject AreaPhysics
Indexed BySCI
Document Type期刊论文
Identifierhttp://ir.itp.ac.cn/handle/311006/12718
Collection理论物理所科研产出_SCI论文
Corresponding AuthorWu, YL , Acad Sinica, Inst Theoret Phys, POB 2735, Beijing 100080, Peoples R China.
Recommended Citation
GB/T 7714
Wu, YL,Wu, YL , Acad Sinica, Inst Theoret Phys, POB 2735, Beijing 100080, Peoples R China.. New prediction for the direct CP-violating parameter epsilon[J]. PHYSICAL REVIEW D,2001,64(1):-.
APA Wu, YL,&Wu, YL , Acad Sinica, Inst Theoret Phys, POB 2735, Beijing 100080, Peoples R China..(2001).New prediction for the direct CP-violating parameter epsilon.PHYSICAL REVIEW D,64(1),-.
MLA Wu, YL,et al."New prediction for the direct CP-violating parameter epsilon".PHYSICAL REVIEW D 64.1(2001):-.
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