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A tau lepton(tr)has a rest energy of 1.7 GeV and is moving to the right with...

A tau lepton(tr)has a rest energy of 1.7 GeV and is moving to the right with a kinetic energy of 2.3 Gev. An anti-tau lepton (r) same rest energy as the tau lepton) is moving to the left with a kinetic energy of 0.3 GeV. The two leptons collide and form tautonium. The tautonium then decays into two photons, one traveling to the right and the other to the left.

a. What is the initial momentum in GeV/c of the tau lepton?

b. What is the rest energy of the tautonium?

c. What is theB of the tautonium?

d. What are the energies of the two photons produced by the decay of the tautonium?

Science   Advanced-Physics   
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