LHC Phenomenology

Spring '07

Chris Spitzer
Abstract - I'll give a talk on the basics of the LHC, and the theoretical framework used to calculate hadron-hadron collisions.
Refs -
- Schellman, PiTP 2005 Notes, PDF.
- Campbell, et al., "Hard Interactions of Quarks and Gluons: A Primer for LHC Physics", hep-th/0611148.
- Mangano, "Introduction to Hadronic Collisions: Theoretical Concepts and Practical Tools for the LHC", lectures.

Andrew Lytle
Abstract - I will be talking about the ATLAS and CMS detectors, and SM processes. The goal is to get us thinking realistically about what we can hope to see in the detectors, and what that might mean in terms of partonic processes.
Refs -
- Schellman, "Practical Aspects of Collider Physics", PDF.
- Han, "Collider Phenomenology", hep-th/0508097.

Jon Walsh
Abstract - I'll be discussing final states at the LHC, particularly jets, as well as triggers and calibration. We'll try to finish our discussion of how we get from the initial state protons to information about physical theories. I hope to use the ideas we've learned to discuss a basic model we wish to test at the LHC, the Z'. References on final state objects can be found in Steve Ellis' QCD lectures on his website. A. Cardini has a good set of talks on triggering, I'll refer to the TDRs for my discussion of detector calibration.
Refs -
- Ellis webpage
- Cardini ...
- ATLAS TDR, webpage.
- CMS TDR, webpage.

Kristan Jensen
Abstract - The Higgs constitutes the only undiscovered element of the Standard Model. Before discussing its phenomenology, we will briefly review the Higgs mechanism, electroweak constraints on its mass, and past searches. We will then discuss the major production channels for a Standard Model Higgs at the LHC, paying note to the highlights of the relevant computations. This information will be crucial when we analyze the primary decays in the various Higgs mass regimes, from which we identify good detection channels and their signatures. Time permitting, we may conclude with a brief discussion of the measurement of other Higgs parameters at the LHC.
Refs -
- Djouadi, hep-ph/0503172.

Schab Robinger
Abstract - A minimal SUSY model will briefly be motivated and the important features highlighted. Then the Higgs potential of the model and the mass spectrum will be discussed, stressing the importantance of quantum corrections. For simplicity, the decoupling regime will be discussed in more detail and the expected discovery channels for the SUSY Higges in this regime will be presented. Finally, as time permits, the next-to minimal model will be touched upon in the context of the anomalous events recently found at the HyperCP experiment.
Refs -
- Djouadi (supra).
- He et al., hep-ph/1610362.

Steve Paik
Abstract - We will discuss some basics of the Standard Model extended with supersymmetry. I'll try to give a rough sketch of its most important features: the field content, superpotential, R-parity, LSP, QCD scattering events and decays. Using a specific model we will look at two simple examples of inclusive and exclusive detector signatures for the LHC.
Refs -
- ATLAS TDR (supra), Chapter 20.
- Martin, "A Supersymmetry Primer", hep-th/9709356

Ethan Thompson
Abstract - A broad treatment of SUSY breaking will be given. Soft SUSY breaking will be reviewed, and the need for spontaneous breaking will be discussed. The role of auxillary fields in classical spontaneous breaking and the existence of a hidden sector will be motivated. Different forms of mediation between the hidden and visible sectors will be described. Dynamical symmetry breaking will be introduced as a way to naturally generate a hierarchy.
Refs -
- Martin (supra).

Dan Ventura
Abstract - I will talk about Matt Strassler's Hidden Valley model and the ATLAS detector. We will mainly focus on the experimental issues related to triggering on and reconstructing events with long lived particles.
Refs -
- M. Strassler, K. Zurek "Echoes of a Hidden Valley at Hadron Colliders", hep-ph/0604261.
- M. Strassler, K. Zurek "Discovering the Higgs Through Highly-Displaced Vertices", hep-ph/0605193.
- Rome1-Seattle Working Group, website.