UCSB Physics 225b and UCSD Physics 222

UCSB: Broida 5223

UCSD: CLICS, Room 260 Galbraith Hall

This is the second quarter of a two quarter sequence in elementary particle physics. This course is intended to give the student a broad foundation in the phenomenology of modern particle physics.

This is not intended to be a formal course in particle theory. The emphasis is on the understanding of the basic concepts as applied to real world situations and on doing simple calculations. Most students will be concurrently taking a more formal course in field theory. The expectation is that the field theory course will serve as a more formal complement to the treatment given in this class.

Understanding of quantum mechanics at the graduate level would be very helpful, but undergraduate quantum mechanics would suffice.

Who | Office | Phone | im | Office Hours | |

Frank Wuerthwein | Mayer 5515 (UCSD) | Phone: 885 774 7035 (cell) | fkw at ucsd dot edu | im: fkw888 at aim | Monday after class (or anytime you can find him) |

Claudio Campagnari | Broida 5119 (UCSB) | Phone: 805 893-7567 | claudio at hep dot ucsb dot edu | im: claudiocampagnar | whenever you can find me |

- General Introduction, Natural Units

- Lifetimes and branching fractions, partial widths, Breit-Wigner

- Interactions of particles with matter (very basic).

- Symmetries, Conservation Laws

- Group Theory for dummies

- Isospin, SU(3)flavor, quark model of hadrons

- Quarkonium discoveries

- Neutrino masses, mixing, and oscillations

- Electrodynamics of S=0 particles

- Cross-sections

- Review of Dirac equation (if needed)

- Electrodynamics of S=1/2 particles (QED)

- Deep inelastic scattering, parton model

- Parton distribution functions, hadronic cross-sections

- QCD corrections, scaling violations, Altarelli-Parisi equation (may need to go in 2nd quarter)

- Fermi Theory, V-A

- Intermediate Vector Boson idea

- GIM Mechanism

- Spontaneous Symmetry Breaking, Goldstone Bosons, Higgs Bosons

- Electroweak Theory, SU(2)xU(1)

- Precision electroweak tests

- Standard Model Higgs Phenomenology: mass, naturalness, production mechanisms, decay modes, experimental prospects

- Mixing and CP violation (K, D, and B systems)

- Taking a stroll through the dominant standard model processes at the LHC - new physics that might hit us within the first 100pb-1 of LHC data

In addition, we recommend that you obtain a copy of the

Other books that you might find useful include (these are on reserve at Science and Engineering library at UCSD):

- Particle Physics: a Comprensive Introduction by Seiden. Also an excellent book, which could have easily been chosen as the main textbook for the class. It came out in 2004, so it is up-to-date. The mathematical treatment is a bit more sophisticated than in Halzen and Martin.
- Introduction to High Energy Physics by Perkins. A classic. The treatment of the subject is at the boundary between the undergraduate and graduate level.
- An Introduction to Gauge Theories and Modern Particle Physics (two volume set) by Leader and Predazzi. Very clear. A little more theoretical than the ones above.
- High Pt physics at hadron colliders by Green. Very focussed on Tevatron and LHC.
- Collider Physics by Barger and Phillips.
- Detectors for Particle Radiation, by Kleinknecht; Experimental Techniques in High-Energy Nuclear and Particle Physics, by Ferbel. These are good introductions to experiemntal techniques.
- QCD and Collider Physics by R.K.Ellis, W.J.Stirling, and B.R.Webber, and excellent reference of QCD for physics at the Tevatron and LHC.

- A nice review paper on the properties of the muon and what you can learn from precise studies of muon decays by Kuno and Okada: arXiv server or Rev. Mod. Physics server.
- The original paper on the GIM mechanism can be found here.
- Bob Cahn has written an interesting article on how the
parameters of the Standard
Model affect your life:
Rev. Mod. Phys.
**68**951 (1996). - Two good pedagogical reviews of the Higgs in the Standard Model have been written by Sally Dawson and Chris Quigg.
- An early paper that discusses the hierarchy problem, and suggests
a way to generate W and Z masses without the Higgs is
L. Susskind Phys. Rev.
**D20**2619 (1979). This is an example of a Technicolor theory. - A review of precision electroweak measurements:
M. Martinez, R. Miquel, L. Rolandi, and R. Tenchini,
Rev. Mod. Phys.
**71**575 (1999) - The website of the LEP Electroweak Working group. This is the group that is charged with averaging all of the electroweak measurements and performing a global analysis.
- The website of the LEP Higgs Working group, with all the details on searches for the Higgs at LEP2.
- The original paper on the discovery of CP-violation.
- Jeff Richman's 1997 Les Houches Summer School lectures on heavy quark physics and CP violation. This writeup has over 230 pages, if you are at UCSB you may want to ask Jeff for a copy!
- The website of the Heavy Flavor averaging group. This is a group that averages experiemntal results from different experiments in heavy flavor physics.
- Here are the webistes of two competing groups that take experimental data and theoretical predictions to perform global fits of unitarity triangle parameters:
- Here is a cute paper that uses the entangled B0-B0bar state from upsilon decay to test basic quantum mechanics.
- An old (but good) E. Farhi and L. Susskind, Physics Reports 74C (1981) 277.
- A couple articles on PDF's and QCD that Joey Huston sent me.
- A couple of review articles on Little Higgs models:
- M. Perelstein, hep-ph/0512128
- M. Schmalz and D. Tucker-Dmith, hep-ph/0502182

- A very recent review of Zprime physics
- Paul Langacker "The Physics of Heavy Z Gauge Bosons" hep-ph/0801.1345

- lecture 1 (ppt)
- lecture 2 (ppt)
- lecture 3 (ppt)
- lecture 4 (ppt)
- lecture 5 (ppt)
- lecture 6 (ppt)
- lecture 7 (ppt)
- lecture 8 (ppt)
- lecture 9 (ppt)
- lecture 10 (ppt)
- lecture 11 (ppt)
- lecture 12 (ppt)
- lecture 13 (ppt)
- lecture 14 (ppt)
- lecture 15 (ppt)
- lecture 16 (ppt)
- lecture 17 (ppt)
- Final Exam

This Quarter I want to focus on actual analyses that either have been done, or are proposed. "Are proposed" may include something you cook up, or something that you find in the literature. From the experimentalists, I will expect some work with comphep, madgraph, or alike to show the kinematics of the final state you are discussing, as well as as discussion of the main backgrounds. Basically, something along the lines of the final exam last quarter.

Here some examples to stimulate ideas.

- Zprime physics. See the Langacker paper mentioned above.
- Wprime physics. I'll find you literature for this if somebody picks it.
- Higgs physics beyond the standard model. In class we discuss standard model higgs in
some detail, as well as a general introduction to the 2 Higgs doublet models. There are plenty more
options to explore, including higgsless models of EWK symmetry breaking. Examples include:
- Higgs in the MSSM (this is just a specific implementation of 2 Higgs Doublet Model
- little Higgs models (see papers linked in above)
- higgsless models

- Dark Matter beyond SUSY LSP. Explore non-standard model physics that leads to dark matter candidates that are viable to explain cosmic darm matter but do not involve SUSY. The specific example I'd suggest here is Arkani-Hamed idea that leads to "lepton-jets". (hep-ph/0810.0714)
- Take your pick from the Atlas physics "phonebook". You can get it here .
- Take your pick form the list of public results by the CMS Exotics group
here . E.g.:
- Large Extra Dimensions (diphoton, monojet + MET, monophoton + MET)
- Technocolor
- New charged Vector bosons in minimal higgsless models

- Homework 1 due in class on Tuesday January 19th
- Homework 2 due in class on Tuesday February 2nd
- Homework 3 due in class on Tuesday February 16th
- Homework 4 due in class on Tuesday February 23rd