Which ones of the following Feynman diagrams represent a feasible process?
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Q: 13. Draw a Feynman diagram for the reaction n+ vµ → p+µ¯.
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- What do the quark compositions and other quantum numbers imply about the relationships between the Δ+ and the proton? The Δ0 and the neutron?Q2 Draw a Feynman diagram for each of the reactions below. Clearly indicate all gauge bosons in your diagrams. (a) ve¯¯¯ + V₂ (b) y + y → µ³±µ˜¯P2 X The image to the left is a Feynman diagram with time increasing upward. P1 (a) If p1 is an electron and X is a W+ what must p2 be? Why? (b) If p1 is a μ+ and p2 is a different flavor of lepton, what must p2 be? Why? (c) In the last question, what must X be? Why? (d) If p1 and p2 are both electron neutrinos, what must X be? Why? (e) If p1 and p2 are both the same flavor of charged lepton, what might X be? (There are two possibilities.) Why?
- Draw Feynman diagrams for the following processes: (a) an electron emits a photon and (b) an electron absorbs a photonDraw the tree-level Feynman diagrams for the following processes: (i) Pair annihilation: 7+ +7¯ →Y+Y (ii) Pair production: 7+7→7+ ++ (iii) The EM process μ++μ¯¯ →→ μ+ + μ¯ e¯¯ + Ve → T¯ + VT q+q→ q+q (iv) The weak process (v) The strong processA nucleus traveling at speed vnucleus = c(1 - 10-5) decays with the emission of a particle of speed vdecay particle = c(1 - 2 x 10-4) at an angle of 45°, as shown in the diagram above. i) What is the velocity (speed and direction) of the decay particle on transforming to the stationary frame of reference of the nucleus. Clearly explain the quantities used in your evaluation, and show the directions and signs of quantities. Give the speed of the decay particle in the form c(1 - ?). ii) If the decay particle was an electron, what was its total energy in the rest frame of the nucleus? What was its total energy in the original frame shown in the above diagram?Give your answers in units of MeV.