A-meson of rest mass mo, velocity u, y= (1-ulc)- decays in flight into two photons. If...

 

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A-meson of rest mass mo, velocity u, y= (1-ulc)-¹² decays in flight into two photons. If one of the photons is emitted at an angle to the direction of motion of the r-meson in the laboratory system, show that its energy hv is given by hv= moc² 2y (1 - u cos 0/c) A-meson of rest mass mo, velocity u, y= (1-ulc)-¹² decays in flight into two photons. If one of the photons is emitted at an angle to the direction of motion of the r-meson in the laboratory system, show that its energy hv is given by hv= moc² 2y (1 - u cos 0/c)