Most of the particles known to physicists are unstable. For example, the lifetime of the neutral pion,π0, is about 8.4x10-17 s. Its mass is 135.0 MeV/c2. a) What is the energy width of the π0 in its ground state? b) What is the relative uncertainty ∆m/m of the pion’s mass?

Most of the particles known to physicists are unstable. For example, the lifetime of the neutral pion,π0, is about 8.4x10-17 s. Its mass is 135.0 MeV/c2. a) What is the energy width of the π0 in its ground state? b) What is the relative uncertainty ∆m/m of the pion’s mass?

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Question

Most of the particles known to physicists are unstable. For example, the lifetime of the neutral pion,π⁰, is about 8.4x10-17 s. Its mass is 135.0 MeV/c2. a) What is the energy width of the π⁰ in its ground state? b) What is the relative uncertainty ∆m/m of the pion’s mass?

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