Anomalous U(1)'s, Chern-Simons couplings and the Standard Model

TL;DR

This paper explores the structure of anomaly-related effective actions, highlighting the presence of Stuckelberg, axionic, and Chern-Simons couplings in string vacua and quantum field theories, with potential LHC signals.

Contribution

It provides a comprehensive analysis of anomaly-induced couplings, emphasizing their generality and possible experimental signatures in high-energy physics.

Findings

Effective actions include non-trivial Chern-Simons couplings.

Such couplings are common in orientifold string vacua.

Potential signals at LHC due to these couplings.

Abstract

This proceeding is based on hep-th/0605225 and it shows that the most general anomaly related effective action contains Stuckelberg, axionic and Chern-Simons-like couplings. Such couplings are generically non-trivial in orientifold string vacua. A similar analysis in quantum field theories provides similar couplings. These Chern-Simons couplings generate new signals which might be visible at LHC.