BRAINCAKEQuarks and Leptons
Revision notes for Quarks and Leptons in AQA Physics (7407). Every lesson in BrainCake comes with R.E.C.I.P.E. recall steps, a quick check and spaced reviews.
- 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 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 CollisionsWhen a lepton meets its antiparticle they can annihilate.
- Lepton RulesLeptons are fundamental particles.
- NeutrinosA neutrino is a lepton with no charge and a very tiny rest mass.
- StrangenessParticles that contain a strange quark (such as the K- and the Λ0) have a strangeness of -1 Particles that contain a strange antiquark (such as the…
- The Quark ModelQuarks are fundamental particles.
- Quarks and Beta DecayIn beta-minus decay A neutron changes into a proton.
- Conservation RulesEvery particle interaction must obey a set of conservation rules.
On the specification
- 3.2.1.2 Stable and unstable nuclei
- 3.2.1.3 Particles, antiparticles and photons
- 3.2.1.5 Classification of particles
- 3.2.1.6 Quarks and antiquarks
- 3.2.1.7 Applications of conservation laws