Noether's Theorem and Symmetry Groups
Wednesday, January 20, 2016
08:49
Emmy Noether
Noether's Theorem
Continuous symmetries of a system correspond to conserved quantities:
Invariance under spatial tr
Four Three (or is it Two?) Forces
Saturday, January 02, 2016
16:56
Great success of "Standard Model" - describing all physical phenomena in terms of four fundamental
forces:
Name
Range
Strength Mediat
QED Vertex
Wednesday, January 06, 2016
08:06
All QED reactions are built from a single elementary process or primitive vertex:
Time ->
In this case, an electron is involved, but the line could be any
Detecting Ionization in Gas
Friday, February 19, 2016
07:41
Production of Ionization in Gases
Recall the production of ionization by charged particles passing through matter:
Measurement of this ioniz
Particle Interactions with Matter
Handout
Friday, January 22, 2016
08:59
A lot of today's lecture comes from this section
A useful table if you need to know
the properties of some material
The RPP has
Course References
Friday, January 01, 2016
16:29
Textbooks
(Required)
(Recommended)
Reference Books
Available for web browsing/download at: http:/pdg.lbl.gov
Order hard-copies of one or both from: htt
Simplifying Equations Using Natural Units
Sunday, January 03, 2016
19:18
SI units (Joules, kg, m, etc) are well-suited for macroscopic objects, but in particle physics we will often
be dealing with mu
Baryon Resonances
Wednesday, February 1, 2017
09:04
Like excited states of an atom, resonances become
more and more closely spaced, and harder to distinguish
Baryons and Resonances Page 1
Name_
Physics 136 In-Class Problem
CM Frame in Relativistic Kinematics
You may refer to any written or printed notes or other material, and work together with others on this
problem. You may ask the i
Name_
Physics 136 In-Class Problems
Particle Dynamics
You may refer to any written or printed notes or other material, and work together with others on this
problem. You may ask the instructor questio
44. Clebsch-Gordan coefficients
1
44. CLEBSCH-GORDAN COEFFICIENTS, SPHERICAL HARMONICS,
AND d FUNCTIONS
p
Note: A square-root sign is to be understood over every coefficient, e.g., for 8/15 read 8/15.
Lorentz Invariance
Monday, January 11, 2016
05:57
4-vectors
We're used to the idea of rotating vectors in 3-dimensional space.
Rotating a vector normally changes its components, but preserves some oth
Today's Lecture Brought to You By
Monday, January 23, 2017
09:59
Pions come in three varieties (
are spinless (J = 0)
) and
They have negative parity, so they are called "pseudoscalar"
(true scalar pa
Introduction:
Learning to Love the RPP
Friday, January 22, 2016
00:33
In studying the fundamental forces and elementary particles, we have the interesting situation that any
measurements must rely on
Name_
Physics 136 In-Class Problems
Natural Units
You may refer to any written or printed notes or other material, and work together with others on this
problem. You may ask the instructor questions.
Today's Lecture Brought to You By
Monday, January 30, 2017
08:05
or
There is large mixing between neutrino flavor and mass eigenstates
Neutrinos can be treated as massless in kinematic problems
The hu
Course Overview Figures
Sunday, January 03, 2016
19:01
Discovery of the Positron
One of the earliest observed muon candidates
Course Overview Page 1
Discovery of the K0 meson
Madame Wu in 1963
Course
Name_
Physics 136 In-Class Problem
Clebsch-Gordon Coefficients
You may refer to any written or printed notes or other material, and work together with others on this
problem. You may ask the instructo
Chapter 2 Solutions
Wednesday, January 13, 2016
09:09
34 points possible for the whole assignment
2 points for correct answer
1 point if you got the right forces but a math error in the ratio
2 points
Name_
Physics 136 In-Class Problem
Decay Rates
You may refer to any written or printed notes or other material, and work together with others on this
problem. You may ask the instructor questions. You
Name_
Physics 136 In-Class Problem
Isospin
You may refer to any written or printed notes or other material, and work together with others on this
problem. You may ask the instructor questions. You may
Today's Lecture Brought to You By
Wednesday, January 20, 2016
10:08
Mass ~ 200 me
Lifetime ~ 2.2 s
Magnetic moment an extremely precise test of new physics
(more sensitive than electron g-2 due to hig
Today's Lecture Brought to You By
Wednesday, January 18, 2017
07:55
PDG Summary Table for photon is brief!
I ("Isospin") = 0, 1
J (Angular Momentum) = 1
P (Parity) = -1 (EM described by a vector poten
Today's Lecture Brought to You By
Wednesday, January 25, 2017
08:46
All the "scale-factors" (S) that you see
indicate how much the error bars have been scaled
This indicates that the original data do
Decay Rates
Wednesday, February 03, 2016
09:41
Experimentally, the lifetime of a particle is one of the fundamental properties we can measure.
Since particle decays are a random process, the best we c