Explain with reasons and showing working whether the following reactions and decays would be possible. For those that are possible state with reasons which of the fundamental forces is responsible. et + e + + V₂ +µ¯¯ + μµ B+ →+K+ ++ + ¯ p + at → Σ+ + K+ [Quark structures are B+ ub, cc, K+: us, E+ : uus] Write down a reaction that would provide a clean method of measuring the struc- ture of the neutron. Explain your answer. Sketch on separate graphs the d and d quark distributions of the neutron as a function of x, the fraction of the neutron's momentum carried by the struck quark. Include in each graph a comparison with the d and d quark distributions of the proton.

Explain with reasons and showing working whether the following reactions and decays would be possible. For those that are possible state with reasons which of the fundamental forces is responsible. et + e + + V₂ +µ¯¯ + μµ B+ →+K+ ++ + ¯ p + at → Σ+ + K+ [Quark structures are B+ ub, cc, K+: us, E+ : uus] Write down a reaction that would provide a clean method of measuring the struc- ture of the neutron. Explain your answer. Sketch on separate graphs the d and d quark distributions of the neutron as a function of x, the fraction of the neutron's momentum carried by the struck quark. Include in each graph a comparison with the d and d quark distributions of the proton.