The following lecture notes cover the lectures on Soft-Collinear Effective Theory. The lecture notes make reference to several papers, the citations for which appear below the table. For a single file containing all of the notes, download the Notes on Soft-Collinear Effective Theory. (PDF)

Lec # | SUBtopics | references |
---|---|---|

22 | Introduction, Degrees of Freedom, Scales, Expansion of Spinors, Propogators, Power Counting (PDF) | [2], [3] |

23 | Construction of Currents, Lagrangian Multipole Expansion, Labels, Grid in Detail (not in notes) (PDF) | [2], [3], [10] |

24 | SCET_I Lagrangian, Gauge Symmetry, Reparameterization Invariance (RPI) (PDF) | [3], [1], [6] |

25 | More RPI, Ultrasoft-Collinear Factorization, Hard-Collinear Factorization, Infrared Divergences, Matching, Running (PDF) | [4], [1], [2], [3] |

26 | DIS, Soft-Collinear Interactions (PDF) |
For DIS see [8]
For Soft-Collinear Interactions see [4] |

27 | SCET_II, Power Counting Formulae, Examples, Define a Jet (PDF) |
Fro SCET_II see [4], [7], [10]
For Power Counting see [5] For examples see [8], [9], [4] For Jets see [4], [11], [12] |

The links below are to abstracts of the corresponding scientific papers.

### References

[1] Bauer, C. W., S. Fleming, and M. Luke (University of Toronto). “Summing Sudakov logarithms in B -> X_s + gamma in effective field theory.” *Physics Review* D63 (2001): 014006.

[2] Bauer, Christian W., Sean Fleming, Dan Pirjol, and Iain W. Stewart. “An effective field theory for collinear and soft gluons: heavy to light decays.” *Physical Review* D63 (2001): 114020.

[3] Bauer, Christian W., and Iain W. Stewart. “Invariant Operators in Collinear Effective Theory.” *Physics Letters* B516 (2001): 134.

[4] Bauer, Christian W., Dan Pirjol, and Iain W. Stewart. “Soft-Collinear Factorization in Effective Field Theory.” *Physical Review* D65 (2002): 054022.

[5] Bauer, Christian W., Dan Pirjol, and Iain W. Stewart. “Power Counting in the Soft-Collinear Effective Theory.” *Physical Review* D66 (2002): 054005.

[6] Manohar, Aneesh V., Thomas Mehen, Dan Pirjol, and Iain W. Stewart. “Reparameterization Invariance for Collinear Operators.” *Physics Letters* B539 (2002): 59.

[7] Bauer, Christian W., Dan Pirjol, and Iain W. Stewart. “On Power Suppressed Operators and Gauge Invariance in SCET.” *Physical Review* D68 (2003): 034021.

[8] Bauer, Christian W., Sean Fleming, Dan Pirjol, Ira Z. Rothstein, and Iain W. Stewart. “Hard Scattering Factorization from Effective Field Theory.” *Physical Review* D66 (2002): 014017.

[9] Bauer, Christian W., Dan Pirjol, and Iain W. Stewart. “A proof of factorization for B -> D pi.” *Physical Review Letters* 87 (2001): 201806.

[10] Manohar, Aneesh V., and Iain W. Stewart. “The Zero-Bin and Mode Factorization in Quantum Field Theory.” 2006.

[11] Bauer, Christian W., Aneesh V. Manohar, and Mark B. Wise. “Enhanced nonperturbative effects in jet distributions.” *Physical Review Letters* 91 (2003): 122001.

[12] Sterman, George. *An Introduction to Quantum Field Theory*. New York, NY: Cambridge University Press, 1993. ISBN: 9780521322584 (hardback), 9780521311328 (pbk.).

Lee, Christopher, and George Sterman. “Universality of Nonperturbative Effects in Event Shapes.” 2006.