THE APPROXIMATE B-S WAVE FUNCTIOPiS FOR (XU) ATOM AND THE DECAY RATE FOR E°→(∑+μ-)+νμ |
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| Authors: | SONG Xiao-tong CHING Cheng-rui HO Tso-hsiu |
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| Institution: | 1. Hangzhou University, Hangzhou, China;
2. Institute of Theoretical Physics, Academia Sinica, Beijing, China |
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| Abstract: | In this paper, the Bethe-Salpeter equation for a Coulombic bound system consisting of a fermion (mass ml and spin 1/2) and an anti-fermion (mass m2 and spin 1/2) is solved. The approximate B-S wave functions for (∑U) atom are given. Utilizing the perturbative expansion of the quantum field theory of composite particles, the decay rate and branching ratio for E°→(∑+μ-)+νμ are calculated with accuracy up to order O(α). |
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