Fundamental Particles (CIE A Level Physics)

Carbon–10 is an isotope that decays to an isotope of boron (symbol ) by the emission of a β⁺ particle. 

State the two leptons in this decay.

State and explain why a hadron with charge –3e cannot exist. 

e is the elementary charge.

State the possible quark combination for a hadron of charge +2e.

State the quark composition of an alpha particle.

Use the quark model to show that the charge on the anti-neutron is 0.

A sigma baryon Σ is a hadron that consists of an up (u) quark, a down (d) quark and a strange (s) quark. 

State the quark composition of Σ⁺ , Σ⁰ and Σ^– .

Explain why a baryon with the quark composition cannot exist.

State the number of 'up' quarks in the nucleus of .

The  particle has a quark structure .

the classification of the  particle,

the charge on the particle.

Using the quark model, show that the magnitude of the charge of a proton is equal to the charge of an electron.