Stueckelberg Axions and Anomalous Abelian Extensions of the Standard Model

Details Stueckelberg Axions and Anomalous Abelian Extensions of the Standard Model Stueckelberg Axions and Anomalous Abelian Extensions of the Standard Model

2009-07-22

arxiv.org/abs/0907.3877v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

218 pages, Ph.D. Thesis (Advisor: Claudio Coriano')

Scientific paper

This thesis work analyzes basic field theoretical aspects of a class of models motivated by orientifold vacua of string theory and some of their phenomenological applications at the Large Hadron Collider. They extend the gauge structure of the Standard Model by anomalous extra U(1) symmetries, which involve Stuckelberg axions for anomaly cancellation and are accompanied by Chern-Simons interactions. In particular, these effective actions are characterized by a physical pseudoscalar (the axi-Higgs) in the CP-odd spectrum, which has the properties of a generalized Peccei-Quinn axion, with independent mass and couplings to the gauge fields. Amplitudes mediated by anomalous gauge interactions are studied at the new collider in some specific channels such as Drell-Yan and double prompt-photon and shown to be small. Finally, we address the problem of the relation between the Green-Schwarz and the Wess-Zumino mechanism(s) for anomaly cancellations in effective lagrangeans involving anomalous gauge interactions, with their gauge symmetry restored either with local or non-local counterterms and identify some unitarity bounds in the Wess-Zumino case. These are due to the presence of anomaly poles in scattering amplitudes mediated by the anomaly (BIM amplitudes) and whose cancellation requires necessarly non-local counterterms. While the axi-Higgs appears in the Wess-Zumino case, two axion-like particles are needed for the cancellation of the gauge anomalies at all scales, one of them being a ghost.

Affiliated with

Also associated with

No associations

Rating

Stueckelberg Axions and Anomalous Abelian Extensions of the Standard Model does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Stueckelberg Axions and Anomalous Abelian Extensions of the Standard Model, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Stueckelberg Axions and Anomalous Abelian Extensions of the Standard Model will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-128574