我們利用因子化法和SU(3)味對稱性兩種方法計算Lambda_c^+的無輕子的二體衰變。
對於因子化法，我們著重於Lambda_c^+ 到 p 和Lambda_c^ 到 Lambda這兩種轉換；
對於SU(3)味對稱性，我們則分析Lambda_c^+到重子八重態與介子九重態的衰變。
利用現有的實驗數據，我們藉以確定縮減振幅中的複數參數，並得到衰變比例。

We present two methods to obtain the branching ratios of the charmed baryon Lambda_c^+ nonleptonic two body decays:
the Factorization and SU(3) flavor symmetry approaches.
For the Factorization approach, we focus on the Lambda_c^+ to p and Lambda_c^+ to Lambda transition.
While for the SU(3) flavor symmetry approach,
we investigate the decays of Lambda_c^+
into an octet baryon and a nonet meson.
We use the current experiment data to determine the complex parameters
in the reduced amplitudes in order to obtain the branching ratios.

1 Introduction 1
2 Factorization Approach 3
2.1 Factorization Approach in Nonleptonic Lambda_c^+c
Decays . . . . . . 3
2.1.1 Baryon transition . . . . . . . . . . . . . . . . . . . . . . 3
2.1.2 The recoil Mesons . . . . . . . . . . . . . . . . . . . . . . 4
2.2 Results of Factorization Approach . . . . . . . . . . . . . . . . 6
3 SU(3) Flavor Symmetric Approach..................... 8
3.1 Flavor SU(3) Symmetry in Nonleptonic Lambda_c^+c Decays . . . . . 8
3.1.1 SU(3) Structure and Effective Hamiltonian . . . . . . . . . . 8
3.1.2 SU(3) Decays Amplitudes for Bc to BnM Decays . . . . . . 10
3.2 Results of SU(3) Symmetry Approach . . . . . . . . . . . . . 12
4 Conclusions and Future Work 16
Reference 17

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