1 / 10

6.1.3 Standard Model

6.1.3 Standard Model. The Theory of (Almost) Everything. Definition. A theory that describes three of the four fundamental forces of nature and the various particles that make up matter in the Universe. This theory is consistent with Relativity and Quantum Mechanics. Classes of Matter.

scott
Download Presentation

6.1.3 Standard Model

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. 6.1.3 Standard Model The Theory of (Almost) Everything

  2. Definition • A theory that describes three of the four fundamental forces of nature and the various particles that make up matter in the Universe. This theory is consistent with Relativity and Quantum Mechanics.

  3. Classes of Matter Matter • Made up of PARTICLES and their ANTIPARTICLES with EQUAL mass and OPPOSITE charge. Hadrons Leptons Do not experience the strong force tau (τ-) muon (μ-) electron (e-) τ neutrino (ντ0) μ neutrino (νμ0) e neutrino (νe0) Anti-Leptons anti-tau (τ̄+) anti-muon (μ̄+) anti-electron (ē+) anti-τ neutrino (ν̄τ0) anti-μ neutrino (ν̄μ0) anti-e neutrino (ν̄e0) Baryons any 3 quarks Anti-Baryons any 3 anti-quarks Mesons any quark plus any anti-quark Quarks Anti-Quarks

  4. Example #1 • What charges are allowed for mesons? quark (+2/3e or -1/3e) plus anti-quark (-2/3e or +1/3e) +1e, 0, -1e

  5. Example #2 • Give an example of a baryon with a +1e charge. ex. uud, ttb, ccs

  6. Example #3 • What is the charge on an anti-tau particle? tau = -1e anti-tau = +1e

  7. Example #4 • A charged kaon (K+) is composed of an up quark and an anti-strange quark. • What is the charge on this type of kaon? up = +2/3e anti-strange = +1/3e +1e

  8. Fundamental Forces

  9. Beta Decay • A neutron will spontaneously decay into a proton, electron, and anti-electron neutrino. - udd  uud (one down quark becomes an up quark) - charge is conserved - mass of neutron > mass of proton

  10. End of 6.1.3

More Related