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Chapter 33: Q27CQ (page 1211)
Discuss the similarities and differences between the photon and the Z0in terms of particle properties, including forces felt.
The similarities and differences between photons and Z0 are mentioned below.
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How can quarks, which are fermions, combine to form bosons? Why must an even number combine to form a boson? Give one example by stating the quark substructure of a boson.
Is the decay \({\rm{n}} \to {{\rm{e}}^{\rm{ + }}}{\rm{ + }}{{\rm{e}}^{\rm{ - }}}\)possible considering the appropriate conservation laws? State why or why not.
The primary decay mode for the negative pion is \[{\pi ^ - } \to {\mu ^ - } + {\bar \nu _\mu }\]. What is the energy release in MeV in this decay?
Theorists have had spectacular success in predicting previously unknown particles. Considering past theoretical triumphs, why should we bother to perform experiments?
(a) What is the uncertainty in the energy released in the decay of a \({{\rm{\pi }}^{\rm{0}}}\)due to its short lifetime?
(b) What fraction of the decay energy is this, noting that the decay mode is \({{\bf{\pi }}^{\bf{0}}} \to {\bf{\gamma }}{\rm{ }} + {\rm{ }}{\bf{\gamma }}\) (so that all the \({\rm{\pi ^0}}\)mass is destroyed)?
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