It says that in beta decay a neutron splits up to form a proton-a nutrino and an electron-positron- nbsp-A Neuton is made of two down quarks and one up quark-and my doubt is that1- Are The most stable quarks such as Up and Down nbsp-interconvertible-2- As the current laws of physics do not admit Quark-Lepton Complementarity how could a particle made of quarks split to an electron which is a lepton-

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Standard XII

Chemistry

Introduction of VSEPR

It says that ...

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It says that in beta decay a neutron splits up to form a proton,a nutrino and an electron/positron.
A Neuton is made of two down quarks and one up quark.
and my doubt is that
1) Are The most stable quarks such as Up and Down interconvertible?
2) As the current laws of physics do not admit Quark-Lepton Complementarity how could a particle made of quarks split to an electron which is a lepton?

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Solution

Hi,

1. 1. Stability of quarks is a non-physical argument; they are basic building blocks of nature together with leptons. Yes, they are convertible and its convertibility is one of the basic characteristics of weak interaction.
The mediator of weak interaction i.e. W^-- boson changes the flavor of down quark (d) to up quark (u) by the equation
d = u + W^--

Conversion of W^--, which is a boson, to fermions of opposite symmetry: electron and electron-antineutrino; is an energy Ã mass transformation process (like gamma ray in the vicinity of a atomic nucleus converts into electron and positron), rather than a quark lepton complementarity.

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