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explain how leptons can arise from lambda decay

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In high energy physics, a particle called the lambda (Λ0) has zero charge, and may be thought of as a neutron with a strange quark replacing a down quark. One way this particle decays is by conversion into a proton and emission of a muon and a muon antineutrino via the weak interaction, despite no leptons being present initially. That is,

Use your understanding of the quark model of hadrons and the boson model of the weak nuclear interaction to explain how leptons can arise from lambda decay. Include a suitable diagram to illustrate your answer.

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The expert explains how lepton can arise from lambda decay.

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The s quark can decay into the u quark through the emission of W minus vector boson. This is a ...

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