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Chinese Physics C 2010年第10期34卷 1547-1555页

作者： R.Friedberg t.d.lee Physics department Columbia UniversityNew York China Center of Advanced Science and technology(CCASt/World Lab.)

We propose a simple set of hypotheses governing the deviations of the leptonic mapping matrix from the Harrison-Perkins-Scott （HPS） form. these deviations are supposed to arise entirely from a perturbation of the mass matrix in the charged lepton sector. the perturbing matrix is assumed to be purely imaginary （thus maximally t-violating） and to have a strength in energy scale no greater （but perhaps smaller） than the muon mass. As we shall show, it then follows that the absolute value of the mapping matrix elements pertaining to the tau lepton deviate by no more than O（（mμ/mτ）^2） ≈ 3.5 ×10^-3 from their HPS values. Assuming that （mμ/mτ）^2 can be neglected, we derive two simple constraints on the four parameters θ12,θ23, θ31, and δ of the mapping matrix. these constraints are independent of the details of the imaginary t-violating perturbation of the charged lepton mass matrix. We also show that the e and μ parts of the mapping matrix have a definite form governed by two parameters α and β; any deviation of order mμ/mτ can be accommodated by adjusting these two parameters.

关键词： lepton mapping matrix CP and t violation Jarlskog invariant timeon

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＜正＞the China Center of Advanced Science and technology （CCASt） was established on October 17, 1986 through the strong support of World Laboratory and the Chinese Government. Its purpose is to introduce important frontier areas of science to China, to foster their growth by providing a suitable environment, and to promote free exchange of scientific information between China and other nations.

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＜正＞the China Center of Advanced Science and technology（CCASt） was established on October 17,1986 through the strong support of World Laboratory and the Chinese *** purpose is to introduce important frontier areas of science to China,to foster their growth by providing a suitable environment,and to promote free ex- change of scientific information between China and other nations.

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＜正＞ the China Center of Advanced Science and technology （CCASt） was established on October 17, 1986 through the strong support of World Laboratory and the Chinese Government. Its purpose is to introduce important frontier areas of science to China, to foster their growth by providing a suitable environment, and to promote free exchange of scientific information between China and other nations.

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the China Center of Advanced Science and technology(CCASt) was established on October 17,1986 through the strong support of World Laboratory and the Chinese *** purpose is to introduce important frontier areas of science to China,to foster their growth by providing a suitable environment,and to promote free ex- change of scientific information between China and other nations.

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＜正＞the China Center of Advanced Science and technology（CCASt）was established on October 17,1986 through the strong support ofWorld Laboratory and the Chinese *** purpose iS tointroduce important frontier areas of science to *** foster theirgrowth by providing a suitable environment,and to promote free ex—change of scientific information between China and other nations.

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＜正＞the China Center of Advanced Science and technology（CCASt）was established on October 17,1986 through the strong support ofWorld Laboratory and the Chinese *** purpose is tointroduce important frontier areas of science to China,to foster theirgrowth by providing a suitable environment,and to promote free ex-change of scientific information between China and other nations.

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