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ruchika
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Why the decay of neutral pion to electron positon pair is forbidden?
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Here I think it means that it violates helicity conservation (which is expected for the leading order in the Bjorken limit).malawi_glenn said:it is second order, so it depends on what one means by "forbidden"
malawi_glenn said:it is second order, so it depends on what one means by "forbidden"
LongLiveYorke said:Isn't it also helicity suppressed?
The decay of the neutral pion to an electron-positron pair is forbidden due to conservation of energy and momentum. The pion, being a spin-zero particle, cannot decay into two spin-half particles such as the electron and positron, as this would violate the laws of conservation of angular momentum.
The decay of the neutral pion to an electron-positron pair is significant because it is a rare process that can provide insights into the fundamental forces and interactions at play in the universe. It is also important for understanding the properties of the pion, which is a key particle in the study of nuclear matter and the strong nuclear force.
The decay of the neutral pion to an electron-positron pair is mediated by the weak nuclear force. This force is responsible for certain types of radioactive decay and is one of the four fundamental forces in nature. The decay of the pion to an electron-positron pair is a manifestation of the weak nuclear force acting on the particles involved.
Yes, the decay of the neutral pion to an electron-positron pair has been observed in high-energy particle collisions. However, it is a very rare process and is only seen in certain conditions. The decay has also been studied and observed in laboratory experiments using particle accelerators.
The decay of the neutral pion to an electron-positron pair is one of the processes that has been used to test and validate theories in particle physics, such as the Standard Model. The observation of this decay and its properties can provide insights into the fundamental forces and particles that make up our universe and help refine our understanding of these theories.