3.2.1.6 Quarks and anti-quarks

What is the quark composition of a proton?

Protons are composed of two up quarks and a down quark.

What is the quark composition of a neutron?

Neutrons are composed of two down quarks and an up quark.

What is the quark composition of an antiproton?

An antiproton is composed of two up antiquarks and one down antiquark.

What is the quark composition of an antineutron?

An antineutron is composed of two down antiquarks and one up antiquark.

What is the quark composition of a positive pion?

π+ is composed of an up quark and an anti-down quark.

What is the quark composition of a negative pion?

π- is composed of a down quark and an anti-up quark.

What is the quark composition for a neutral pion?

π^0 is composed of an up quark and an anti-up quark or a down quark and an anti-down quark.

What is the quark composition for a positive kaon?

K^+ is composed of an up quark and an anti-strange quark.

What is the quark composition for a negative kaon?

K^- is composed of a strange quark and an anti-up quark.

What is the quark composition for a neutral strange quark?

K^0 is composed of a down quark and an anti-strange quark or an anti-down quark and a strange quark.

What type of decay is the decay of a neutron?

The decay of a neutron is a type of beta minus decay.

What does a neutron decay into?

A neutron decays into a proton, electron and an electron antineutrino.