Ph 139 Introduction to Particle Physics Spring 2020 |

**Course logistics**

- Moodle page for Ph 139
- Lectures held
**Tuesdays at 2:30pm**and**Thursdays at 2:30pm**on Zoom. The Zoom meeting ID is available in Moodle. - Homeworks due Tuesday before 2:30pm. HW downloads and submissions will be handled through Moodle.
- TA: Vincent Lee <szehiml at caltech dot edu>. Office hours: Mondays at 6:00 PM PDT on Zoom (see Moodle for meeting ID)

**Course materials**

- "Introduction to Elementary Particles", David Griffiths (Second, Revised Edition).
*The older first edition is okay in a pinch. It is sorely out of date in places and uses a different format for Feynman diagrams, but these aren't absolute show stoppers. If you can get the second edition, I highly recommend doing so.* - "Review of Particle Physics", Particle Data Group. The material is all online at http://pdg.lbl.gov, but you can order a free hard copy from the site if you like paper.
- A variety of other materials will be provided, particularly for the second half of the term.

**Course description**

This course is designed to give you a working understanding of the field of particle physics. This is a broad topic, including theory and experiment, historical developments and current activities, accelerators and detectors, terrestrial and astrophysical systems, and more. Ten weeks is a criminally short amount of time to cover the field, but we will still dive deep into the material where possible.

The course is split roughly into two parts. The first half of the course covers the Standard Model from a theoretical and calculational perspective. This half will feel like a traditional course as we work through key chapters in the excellent Griffiths textbook. In the second half of the course, we will look at experimental methods and particular physical systems. These topics will be treated through a mix of lecture material, supplemental readings, and homework problems.

There will be no final exam, but there will be two projects: an in-class presentation and a final paper. The formats of these projects will be discussed in class.

Date | Topics | Materials | HW due |
---|---|---|---|

Tue 3/31
| Online course set up: A/V tests, feedback on tools, etc. | ||

Thu 4/2
| Online course set up: A/V tests, feedback on tools, etc. | ||

Tue 4/7
| Start of instruction. Course introduction, some review, overview of particle physics | Chp. 1 as light reading, Chp. 2 as a look ahead, Chp. 3 as a review and an introduction to some notation. | |

Thu 4/8
| Decays, cross sections, Fermi's golden rule, Feynman diagrams, a toy theory | Chp. 6 (through intro of Sec 6.3) | |

Tue 4/14
| Toy theory cont'd, QED | Chp. 6 (remainder), Chp. 7 (through Sec 7.4) | HW 1 |

Thu 4/16
| QED cont'd | Chp. 7 (remainder). | |

Tue 4/21
| Hadrons, QCD, weak interaction | Chp. 8, Chp. 9 (through Sec 9.5). | HW 2 |

Thu 4/23
| Weak interaction cont'd, discrete symmetries, electroweak | Chp. 9 (remainder), Chp. 4 | |

Tue 4/28
| Electroweak cont'd, neutrino mixing | Chp. 11. | HW 3 and all following homeworks will be only posted to the Moodle page. |

Thu 4/30
| Gauge theories, Higgs mechanism | Chp. 10. | |

Classes after this point include student presentations. Special topics listed below will only be a portion of each class. | |||

Tue 5/5
| Open questions in particle physics | Chp. 12. | |

Thu 5/7
| Cosmology, astroparticle physics, cosmic rays | ||

Tue 5/12
| Particle accelerators | ||

Thu 5/14
| Passage of particles through matter, particle detection principles | ||

Tue 5/19
| Particle detectors, full experimental setups | ||

Thu 5/21
| Methods of particle physics data analysis | ||

Tue 5/26
| (Enrollment-dependent: default is student presentations) | ||

Thu 5/28
| (Enrollment-dependent: default is student presentations) |