It is now believed that protons and neutrons are themselves built out

1.	It is now believed that protons and neutrons are themselves built out of more elementary of charge \(+\frac{2e}{3}\) and then down quarks denoted by ‘d’ of charge \(-\frac{e}{3}\) together with electrons build up ordinary matter. Suggest a possible quark composition of a proton and neutron.
Answer» The charge on up quark (u) = \(+\frac{2e}{3}\) The charge on down quark = \(-\frac{e}{3}\) The charge on proton is +e and it is made of three quarks. Therefore the possible quark composition of a proton is ‘uud' On the other hand, neutron is a neutral particle but it is also made of three quarks. For this, the possible composition of the neutron is ‘udd’.

It is now believed that protons and neutrons are themselves built out of more elementary of charge \(+\frac{2e}{3}\) and then down quarks denoted by ‘d’ of charge \(-\frac{e}{3}\) together with electrons build up ordinary matter. Suggest a possible quark composition of a proton and neutron.

Answer»

The charge on up quark (u) = \(+\frac{2e}{3}\)
The charge on down quark = \(-\frac{e}{3}\)
The charge on proton is +e and it is made of three quarks. Therefore the possible quark composition of a proton is ‘uud'

On the other hand, neutron is a neutral particle but it is also made of three quarks. For this, the possible composition of the neutron is ‘udd’.

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It is now believed that protons and neutrons are themselves built out of more elementary of charge \(+\frac{2e}{3}\) and then down quarks denoted by ‘d’ of charge \(-\frac{e}{3}\) together with electrons build up ordinary matter. Suggest a possible quark composition of a proton and neutron.

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