Particle Questions that include Feynman Diagrams
Q4.
(a)
(i) How many quarks are there in a baryon? Three ![](../../../graphics/symbols/nuclides/ticksmall.png)
(ii) Hadrons fall into two groups, baryons being one of them. What name is given to the other group of hadrons? Mesons ![](../../../graphics/symbols/nuclides/ticksmall.png)
(iii) What distinguishes hadrons from other particles? They are made up of quarks, they are not fundamental OR they are subject to the strong nuclear force. ![](../../../graphics/symbols/nuclides/ticksmall.png)
(3 marks)
(b)
(i) Give the name of one antiparticle that is also a lepton. postron OR antineutrino OR antimuon![](../../../graphics/symbols/nuclides/ticksmall.png)
(ii) What distinguishes leptons from other particles?
Leptons experience the weak interaction
(OR do not expresience the strong nuclear force) ![](../../../graphics/symbols/nuclides/ticksmall.png)
(2 marks)
(c) A neutron decays by the weak interaction. Complete the equation.
![](7A.png)
(2 marks)
(d) The Feynman diagram representing electron capture is given below. Complete the labelling of the diagram.
![](6A.png)
(3 marks)
(Total 10 marks)