Advanced Analysis: Deriving the formula for g
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This should make a bit of sense. All of these events are productions and decays of the charmed meson. The time between creation and decay of a particle is called the lifetime. Because the lifetime of a type of particle is an identifying characteristic, all of these events have that one thing in common; the lifetime.
What is the average value of t?
This value should look familiar; it is the accepted value for the lifetime
of the charmed meson! Do you recall using it earlier to predict decay
Actually the accepted value for the lifetime is