A burst of + mesons (pions) travels down an evacuated beam tube at Fermilab moving at
Question:
A burst of π+ mesons (pions) travels down an evacuated beam tube at Fermilab moving at β = 0.92 with respect to the laboratory.
(a) Compute ϒ for this group of pions.
(b) The proper mean lifetime of pions is 2.6 x 10-8 s. What mean lifetime is measured in the lab?
(c) If the burst contained 50,000 pions, how many remain after the group has traveled 50 m down the beam tube?
(d) What would be the answer to (c) ignoring time dilation?
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a b c Where L is the distance in the pion s...View the full answer
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