Welcome to Physics 125, Particle Physics, for Spring 2009. We'll meet MWF 12:00-12:50pm in Building 387, Room 101. The textbook is `Introduction to Elementary Particles,' Second, Revised Edition by David Griffiths (don't get the First Edition). The Instructor is Harry Nelson, and he'll hold office hours Thursday 1pm-3pm in 5103 Broida. The TA is Kristen Flowers, and her office hours are Wednesday 1pm-4pm in the PSR, on the first floor of Broida.

Midterm results --- average was about 60; that is in the B range. A- is about 75 and above, and C- 40 and above.

Generally, homework will be assigned Fridays and due the subsequent Friday; late homework generally must be approved in advance by Kristen Flowers. It will be collected at 4 pm sharp from the box on the second floor, across from the elevators. Homework found in the box the following Monday at 9 am will loose 5 points out of 40. (This policy is subject to change.)

A midterm is currently planned for Monday, May 4. The final will be Tuesday, June 9 at noon in Building 387, Room 101. The current plan is for homework to count 35%, the midterm 25%, and the final 40%.

The plan is to briefly cover Chapters 1 and 2, then cover Chapters 3, 4, 6, and 7 carefully. Material from Chapters 5, 11, and 12.

- Week 1 -
- Read Griffiths' Intro, Chapter 1, and Chapter 2 ASAP. We'll start in on Chapter 3 on next week.
- Due
~~Friday, April 3~~Monday, April 6 - Griffiths 1.1, 1.3, 1.10. For the last problem, the most efficient way to get the article mentioned is through the UCSB Library web site. If you're off campus, you need to log on; then go to Research > Electronic Journals, and search for `Reviews of Modern Physics.' From there, you should be able to find a .pdf of the article easily... if not, ask for help. You only need to work on Table IIb in this paper. The current meson tables are online, under pdg.lbl.gov. While at that site, register and request a copy of the `Particle Physics Booklet'. Homework 1 Soutions - First Lecture
- Second Lecture

- Week 2 - (4/6 - 4/10)
- Continue Reading Griffiths Chap. 1 and 2.
- Due Friday, April 17 Problem Set 2 (more problems will be assigned on April 10 as Problem Set 3, with the same due date). Homework 2 Soutions
- Third Lecture
- Fourth Lecture
- Due Friday, April 17 Problem Set 3. Homework 3 Soutions
- A copy of the second edition of Griffiths is now on reserve in th Library.
- Fifth Lecture

- Week 3 - (4/13 - 4/17)
- Continue Reading Griffiths Chap. 2.
- Due Friday, April 17 Problem Set 3. This assignment
may be submitted
**any time Friday evening**, as long as the TA finds it in the box on Saturday morning. Do not expect extensions like this in the future. - Sixth Lecture
- Seventh Lecture
- Eighth Lecture

- Week 4 - (4/20 - 4/24)
- Read Griffiths Chap. 3.
- Due Friday, April 24 Problem Set 4. Homework 4 Soutions
- Ninth Lecture
- Tenth Lecture
- Eleventh Lecture

- Week 5 - (4/27 - 5/1)
- Read Griffiths Chap. 4.
- Due Friday, May 1 Problem Set 5. Homework 5 Soutions IMPORTANT NOTE: Homework will no longer be graded if not in the box on Monday morning at 9 am!
- Midterm on Monday, May 4. Through Chapter 3 + isospin. Solutions
- Twelfth Lecture
- Thirteenth Lecture
- Fourteenth Lecture

- Week 6 - (5/4 - 5/8)
- Begin reading Griffiths Chap. 5.
- Due Friday, May 15 Problem Set 6. Homework 6 Soutions
- Lecture 15
- Lecture 16

- Week 7 - (5/11 - 5/15)
- Begin reading Griffiths Chap. 6.
- Due Friday, May 22 Problem Set 7. Homework 7 Soutions
- Lecture 17
- Lecture 18
- All lecture material for this week in 2 files...

- Week 8 - (5/18 - 5/22)
- Continue reading Griffiths Chap. 6.
- Lecture 19
- Lecture 20
- All lecture material for this week in 2 files...

- Week 9 - (5/26 - 5/29)
- Continue reading Griffiths Chap. 6.
- Due Friday, June 5 Problem Set 8 Solutions.
- Lectures this week - one file

- Week 10 - (6/1 - 6/5)
- Continue reading Griffiths Chap. 6.
- Lectures this week - one file
- LHC Slides from Claudio Campagnari (HUGE file)