1 / 10

Particle Interactions

Particle Interactions. Concept of exchange particles to explain forces between elementary particles The electromagnetic force; virtual photons as the exchange particle . The weak interaction limited β-, β+ decay, electron capture and electron-proton

minda
Download Presentation

Particle Interactions

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Particle Interactions Concept of exchange particles to explain forces between elementary particles The electromagnetic force; virtual photons as the exchange particle. The weak interaction limited β-, β+ decay, electron capture and electron-proton collisions; W+ and W- as the exchange particles. Simple Feynman diagrams to represent the above reactions or interactions in terms of particles going in and out and exchange particles.

  2. 1 • Concept of exchange particles to explain forces between elementary particles.

  3. 2

  4. 3 The electromagnetic Interaction Possible areas of questioning • Repulsion/Attraction of charged particles • Annihilation • Pair Creation

  5. e- e- γ e- e- Simple Repulsion between like charged electrons. The particle of exchange is the photon

  6. Electromagnetic InteractionAnnihilation and Pair Creation THESE PROCESSES ARE EXACT OPPOSITES OF ONE ANOTHER

  7. Weak Interaction The weak interaction limited to β-, β+ decay, electron capture and electron-proton collisions; W+ and W- as the exchange particles.

  8. β- decay Decay at the Quark Level udd uud

  9. β+ decay Decay at the Quark Level e+ νe d W+ u udd uud

  10. Electron Capture And Electron Proton Collisions At The Quark Level νe d W- udd uud u e

More Related