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1. Special Relativity (a) An observer sees a πon moving past with momentum ~p. In the...

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Physics

1. Special Relativity (a) An observer sees a πon moving pastwith momentum ~p. In the rest frame of the πon, it decays into aµon and a νtrino in perpendicular directions to the direction inwhich the observer is moving. Find the velocity of the µon in therest frame of the πon.

(b) Find the velocity of the µon in the frame of the observer.What angle does it make with the direction of the πon's motion?Repeat for the νtrino (which may be assumed to be massless).

(c) If the µon's average lifetime is τµ, then what is theaverage time taken it to decay relative to the observer?

Answer & Explanation Solved by verified expert
4.1 Ratings (463 Votes)
Solutiona In the reference frame of the pion that decays into muon andmuon neutrino It decays into the direction perpendicular to thedirection of    See Answer
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