Particle Zoo

The Standard Model

© Webprojects | Imprint & Privacy
Chemical Calculators | Atomic Collider | Teilchenzoo
 Images of Chemical Elements |

The Down Quark

Symbol: d
Group: fermion, quark
Rest mass: 0.00376 - 0.00644 u
Diameter: 0
Charge: -1/3 e
Mean lifetime: stable
Spin: 1/2
Generation: 1
The down is the second lightest quark and together with the up part of the protons and neutrons. This makes it an important particle of our matter. At the decay of a free neutron, a down turns into an up quark and an electron.



Atom Dark Energy Baryons Mesons Proton Neutron Other Baryons Pion Kaon D-Meson Other Mesons Hadrons Up-Quark Down-Quark Strange-Quark Charm-Quark Bottom-Quark Top-Quark Quarks Leptons Electron Muon Tauon Fermions Neutrinos Electron-Neutrino Muon-Neutrino Tauon-Neutrino Antimatter Dark Matter Gauge Bosons Photon Gluon W-Boson Z-Boson Graviton Higgs-Boson Bosons