down quark
Quick Summary
The down quark is a fundamental subatomic particle that, along with the up quark, forms protons and neutrons, the building blocks of atomic nuclei. Quarks are elementary particles that interact via the strong force and are considered fundamental constituents of matter.12
There are six types, or "flavors," of quarks: up, down, charm, strange, top, and bottom. The down quark has an electric charge of -1/3 e, where e is the magnitude of the electron's charge. Protons are composed of two up quarks and one down quark, resulting in a +1 e charge, while neutrons consist of one up quark and two down quarks, giving them a net charge of zero. Quarks have never been observed in isolation; they are always found in combinations with other quarks or antiquarks, forming particles called hadrons, such as baryons and mesons.12
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- quarkQuark flavours
down quark (charge −1/3e) make up protons and neutrons and are thus the ones observed in ordinary matter. Strange quarks (charge −1/3e) occur as components of K mesons and various other extremely short-lived subatomic particles that were first observed in cosmic rays
Read Moredown quark (charge −1/3e) make up protons and neutrons and are thus the ones observed in ordinary matter. Strange quarks (charge −1/3e) occur as components of K mesons and various other extremely short-lived subatomic particles that were first observed in cosmic rays
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subatomic particleQuarks and antiquarks…2/3e, and the down quark, which has a charge of −1/3e. The proton consists of two up quarks and one down quark, which gives it a total charge of +e. The neutron, on the other hand, is built from one up quark and two down…
Read More…2/3e, and the down quark, which has a charge of −1/3e. The proton consists of two up quarks and one down quark, which gives it a total charge of +e. The neutron, on the other hand, is built from one up quark and two down…
Read More- subatomic particleFinding the messenger particles
…of a neutron, where a down quark turns into an up quark to form a proton. Such flavour-changing interactions occur only through the weak force and are described by the SU(2) symmetry that underlies electroweak theory along with U(1). The basic representation of this mathematical group is a pair, or…
Read More…of a neutron, where a down quark turns into an up quark to form a proton. Such flavour-changing interactions occur only through the weak force and are described by the SU(2) symmetry that underlies electroweak theory along with U(1). The basic representation of this mathematical group is a pair, or…
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