Difference between revisions of "Antiquark"
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==Key Stage 5== | ==Key Stage 5== | ||
===Meaning=== | ===Meaning=== | ||
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*Combine with other [[antiquark]]s to form [[antibaryon]]s or with [[quark]]s to form [[meson]]s. | *Combine with other [[antiquark]]s to form [[antibaryon]]s or with [[quark]]s to form [[meson]]s. | ||
*[[Quark]]s and [[antiquark]]s are fundamental constituents of [[matter]]. | *[[Quark]]s and [[antiquark]]s are fundamental constituents of [[matter]]. | ||
| + | *[[Antiquark]]s are produced in high-energy collisions such as those in [[Particle Accelerator|particle accelerators]]. | ||
| + | *[[Antiquark]]s participate in strong interactions mediated by [[gluon]]s. | ||
| + | *[[Antiquark]]s and [[quark]]s are bound together by the strong force in [[hadron]]s. | ||
| + | *The study of [[antiquark]]s provides insight into the behaviour and properties of fundamental particles. | ||
{| border="1" style="border-collapse:collapse" | {| border="1" style="border-collapse:collapse" | ||
|+Properties of the [[antiquark]]s | |+Properties of the [[antiquark]]s | ||
| style="height:20px; width:120px; text-align:center;"|'''[[Antiquark]]''' | | style="height:20px; width:120px; text-align:center;"|'''[[Antiquark]]''' | ||
| + | | style="height:20px; width:120px; text-align:center;"|'''Symbol''' | ||
| style="height:20px; width:120px; text-align:center;"|[[Electrical Charge|'''Charge''']]/[[Elementary Charge|e]] | | style="height:20px; width:120px; text-align:center;"|[[Electrical Charge|'''Charge''']]/[[Elementary Charge|e]] | ||
| style="height:20px; width:120px; text-align:center;"|'''[[Strangeness]]''' | | style="height:20px; width:120px; text-align:center;"|'''[[Strangeness]]''' | ||
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| style="height:20px; width:120px; text-align:center;"| | | style="height:20px; width:120px; text-align:center;"| | ||
[[Antiup-quark]] | [[Antiup-quark]] | ||
| + | | style="height:20px; width:120px; text-align:center;"|<math>\bar{u}</math> | ||
| style="height:20px; width:120px; text-align:center;"|<math>Q=-\frac{2}{3}</math> | | style="height:20px; width:120px; text-align:center;"|<math>Q=-\frac{2}{3}</math> | ||
| style="height:20px; width:120px; text-align:center;"|<math>S=0</math> | | style="height:20px; width:120px; text-align:center;"|<math>S=0</math> | ||
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| style="height:20px; width:120px; text-align:center;"| | | style="height:20px; width:120px; text-align:center;"| | ||
[[Antidown-quark]] | [[Antidown-quark]] | ||
| + | | style="height:20px; width:120px; text-align:center;"|<math>\bar{d}</math> | ||
| style="height:20px; width:120px; text-align:center;"|<math>Q=+\frac{1}{3}</math> | | style="height:20px; width:120px; text-align:center;"|<math>Q=+\frac{1}{3}</math> | ||
| style="height:20px; width:120px; text-align:center;"|<math>S=0</math> | | style="height:20px; width:120px; text-align:center;"|<math>S=0</math> | ||
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| style="height:20px; width:120px; text-align:center;"| | | style="height:20px; width:120px; text-align:center;"| | ||
[[Antistrange-quark]] | [[Antistrange-quark]] | ||
| + | | style="height:20px; width:120px; text-align:center;"|<math>\bar{s}</math> | ||
| style="height:20px; width:120px; text-align:center;"|<math>Q=+\frac{1}{3}</math> | | style="height:20px; width:120px; text-align:center;"|<math>Q=+\frac{1}{3}</math> | ||
| style="height:20px; width:120px; text-align:center;"|<math>S=+1</math> | | style="height:20px; width:120px; text-align:center;"|<math>S=+1</math> | ||
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| style="height:20px; width:120px; text-align:center;"|<math>B=-\frac{1}{3}</math> | | style="height:20px; width:120px; text-align:center;"|<math>B=-\frac{1}{3}</math> | ||
| style="height:20px; width:120px; text-align:center;"|<math>L=0</math> | | style="height:20px; width:120px; text-align:center;"|<math>L=0</math> | ||
|} | |} | ||
Latest revision as of 19:27, 19 May 2024
Key Stage 5
Meaning
An antiquark is the antiparticle of a quark.
About Antiquarks
- Antiquarks have opposite electric charge and "colour charge" to quarks.
- Combine with other antiquarks to form antibaryons or with quarks to form mesons.
- Quarks and antiquarks are fundamental constituents of matter.
- Antiquarks are produced in high-energy collisions such as those in particle accelerators.
- Antiquarks participate in strong interactions mediated by gluons.
- Antiquarks and quarks are bound together by the strong force in hadrons.
- The study of antiquarks provides insight into the behaviour and properties of fundamental particles.
| Antiquark | Symbol | Charge/e | Strangeness | Baryon Number | Lepton Number |
| \(\bar{u}\) | \(Q=-\frac{2}{3}\) | \(S=0\) | \(B=-\frac{1}{3}\) | \(L=0\) | |
| \(\bar{d}\) | \(Q=+\frac{1}{3}\) | \(S=0\) | \(B=-\frac{1}{3}\) | \(L=0\) | |
| \(\bar{s}\) | \(Q=+\frac{1}{3}\) | \(S=+1\) | \(B=-\frac{1}{3}\) | \(L=0\) |