BRAINCAKEQuarks and Leptons
Revision notes for Quarks and Leptons in AQA Physics (7407). Read the start of any lesson here, then sign in free for the whole lesson, the R.E.C.I.P.E. recall steps and the quiz.
- Cosmic RaysCosmic rays are high energy particles which travel through space from the stars.
- MuonsA muon (μ) is a heavy electron.
- PionsA pion (π meson) is a particle that can be positively charged, negatively charged or neutral. π+ π- π0 The rest mass of a muon μ is less than the…
- KaonsA Kaon or K-meson can be positively charged, negatively charged or neutral.
- Particle AcceleratorsA TV tube is an example of a particle accelerator.
- Classifying Particles and AntiparticlesParticles can be divided into 2 groups: leptons and hadrons.
- LeptonsLeptons are particles and antiparticles that do not interact through the strong interaction They interact through the weak interaction, the…
- HadronsThere are two types of hadrons - baryons and mesons.
- Particle Colliders and EnergyParticle accelerators accelerate particles and the particles to extremely high speeds.
- Baryons and MesonsBaryons are hadrons created through the strong interaction They consist of protons and other hadrons that decay into protons (e.g. neutrons) They…
- Lepton CollisionsLeptons and antileptons can interact to produce hadrons.
- Lepton RulesLeptons are fundamental particles.
- NeutrinosNeutrinos travel almost as fast as light.
- StrangenessStrange particles have a strangeness of -1 Anti-strange particles have a strangeness of +1 Kaons were first called V particles because they formed V…
- The Quark ModelQuarks are fundamental particles.
- Quarks and Beta DecayIn beta-minus decay A neutron changes into a proton.
- Conservation RulesThe following conservation rules apply to any interaction: Conservation of mass-energy Conservation of momentum Conservation of charge Conservation…