a) In a quark model of elementary particles, a neutron is made of one up quarks and two down quarks. Assume that they have a triangle configuration with side length of the order of 10-15 m. Calculate the electrostatic potential energy of neutron and compare it with its mass 939 MeV. b) Repeat above exercise for a proton which is made of two up and one down quark.
Quark model of element particles, a neutron is made of one up quark of charge 32ε the two down quark at charge (−31e). We know, Protons, neutrons are each composed of three quarks triangle configuration with side length of the order of =10−15m. electronic potential energy =21mV2 =21lq2 =21×32×(−31×2)×10−15 =92×10−15 =−0.48
