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Two Modes of the Pion Decay in Weak Interaction
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This paper presents traditional and new methods and results for calculation of decay rates of positive pion in the Standard Model. The phenomenological and the theoretical knowledge of the decays is presented. We update the calculation of the decays of the pion into three particles from isotopic spin conservation and the principle of vector current conservation. Comparison is made with exclusive branching ratio data and inclusive charged particle distribution measurements in pion decays and the difficulty in accounting for all the one charged-particle decays as a sum of exclusive decay modes is discussed.
Keywords: Weak interaction, pion decay, decay rate.
Vietnam National University Journal of Science
Title: Two Modes of the Pion Decay in Weak Interaction
Description:
This paper presents traditional and new methods and results for calculation of decay rates of positive pion in the Standard Model.
The phenomenological and the theoretical knowledge of the decays is presented.
We update the calculation of the decays of the pion into three particles from isotopic spin conservation and the principle of vector current conservation.
Comparison is made with exclusive branching ratio data and inclusive charged particle distribution measurements in pion decays and the difficulty in accounting for all the one charged-particle decays as a sum of exclusive decay modes is discussed.
Keywords: Weak interaction, pion decay, decay rate.
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