Now Playing Tracks

Quantum Flavordynamics (Weak Nuclear Force)

  • This is basically the decay of a neutron into a proton by the emission of a W- boson.
  • The up and down part of quarks is known as their flavour, they can effectively change flavours, in this case it is a down quark into an up quark.
  • The W- has to be emitted for the flavour of the quark to change but it does not last long until it decays into an electron (e-) and an anti-electron neutrino (ν
    e )
    .
  • The W- boson (80GeV) is roughly 80x heavier than the neutron (1GeV) it decayed from meaning that it takes a lot of energy for this to happen so is seen happening inside stars which is basically just a big burning ball of protons.
  • The energy for this change can also be borrowed from the vacuum provided the energy is paid back, to do this we refer to Heisenberg’s uncertainty principle:

ΔE x Δt<h

(amount of energy borrowed from vacuum) x (amount of time borrowed for) < Plancks constant 

  • This shows that the energy debt has to be paid back in 1e-25 seconds in which time the W- boson can move the distance of part a proton before it decays.
  • This process is represented by the special unitary matrix two dimensional su(2) in mathematics. It is 2D because it is only changing ups and downs.

412 notes

  1. rickyponce reblogged this from physics-bitch
  2. triangleville reblogged this from universal-simplicity
  3. clazzjassicalrockhop reblogged this from physics-bitch
  4. maxfieldparrishes reblogged this from ceruleanphoenix7
  5. particleinsideofawave reblogged this from genius-vision
  6. ceruleanphoenix7 reblogged this from quantumayanamics
  7. genius-vision reblogged this from quantumayanamics
  8. quantumayanamics reblogged this from the-indian-in-the-cupboard
  9. galifreyanphilosopher reblogged this from black-hole-entropy
  10. thehebrewhammerofjustice reblogged this from physics-bitch
  11. mmartist91 reblogged this from physics-bitch
  12. hypernovadust reblogged this from physics-bitch
  13. bozonkwark reblogged this from physics-bitch
  14. physicistintraining reblogged this from physics-bitch
  15. christopherbmartin reblogged this from physics-bitch
  16. sheikypoe reblogged this from physics-bitch
  17. rithiuscience reblogged this from physics-bitch
  18. scientific-inquiry reblogged this from physics-bitch
  19. promptme-f-sifi reblogged this from thenewenlightenmentage
  20. sherlock-goes-holmes reblogged this from physics-bitch
  21. holy-shit-8 reblogged this from physics-bitch
  22. sweet-prelude reblogged this from universal-simplicity and added:
    I only took notice of the pretty colours :’)
  23. putmyfaithinthestars reblogged this from physics-bitch
  24. themanicengineer65 reblogged this from physics-bitch
We make Tumblr themes