The Delta baryons. Notice that two of the Delta baryons look identical in composition to the neutron and proton. The difference lies in the way the spins of the quarks are aligned. In the Deltas, all three quark spins are aligned, while in protons and neutrons one of the three is always opposite the other two. Deltas are unstable and quickly decay into a neutron or a proton plus a pion (pi meson) of appropriate charge.
Baryons - Delta Particles
| 1st Generation | 2nd Generation | 3rd Generation | |
| "Up" Type Quarks |
Up Quark Mass: 1.87-2.15 MeV Charge: 2/3 Spin: 1/2 ID: u, u |
Charm Quark Mass: 1.18-1.34 GeV Charge: 2/3 Spin: 1/2 ID: c, c |
Top Quark Mass: 172.6-173.6 GeV Charge: 2/3 Spin: 1/2 ID: t, t |
| "Down" Type Quarks |
Down Quark Mass: 4.63-4.95 MeV Charge: -1/3 Spin: 1/2 ID: d, d |
Strange Quark Mass: 90-100 MeV Charge: -1/3 Spin: 1/2 ID: s, s |
Bottom Quark Mass: 4.2 or 4.68 GeV Charge: -1/3 Spin: 1/2 ID: b, b |
Quark Summary (compiled from a number of different sources)
| Particle Type Click name for more: |
Quark Composition | Rest Mass in MeV |
| Proton | uud | 938.3 |
| Neutron | ddu | 939.6 |
| Lambda Charmed Lambda Bottom Lambda Top Lambda |
uds udc udb udt |
1,115.6 2,281.0 5,620.2 ---------- |
| Sigma | ||
| Delta | uuu, uud, udd, ddd | 1232.0 |
| Xi | ||
| Omega |
Physics
-
Composite Particles
Menu:
