Question

is it quarks responsible for conversion of neutron to proton in beta decay​

Answer 1

Answer:

Conservation rules for beta decay

Beta decay just changes neutron to proton or, in the case of positive beta decay (electron capture) proton to neutron so the number of individual quarks doesn't change. It is only the baryon flavor that changes, here labelled as the isospin. All other quarks have I = 0

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Answer 2

Answer:

Yes. Quarks are responsible for the conversion of neutron to proton in beta decay.

Explanation:

First let us know what type of quarks are present in neutron and proton.

» in neutron: 2 downquarks, 1 upquarks; charge 0

( downquarks have charge -1/3, up quark: +2/3)

» in proton: 1 down quark, 2 upquark ; charge +1

During Beta minus decay, a down quark of neutron gets converted into 1 upquark resulting in conversion of neutron to proton. During this process an electron and anti neutrino is released due to the following:

-1/3 = 2/3 + x(charged particle)

x = -1 (nothing but electron)

energy released in this process becomes kinetic energy of electron and antineutrino