Fermionic edge states and new physics

Fermionic Bound States and Pseudoscalar Exchange

We discuss the possibility that fermions bind due to Higgs or pseudoscalar exchange. It is reasonable to believe on qualitative grounds that this can occur for fermions with a mass larger than 800-900 GeV. An exchange of a pseudoscalar boson leads in the nonrelativisitc limit to an unacceptable potential which behaves like 1/r at the origin. We show that this singular behaviour is smeared out w...

Searches for New Physics in Photon and Jet Final States

At an energy frontier collider, the usual way to search for indices of physics beyond the standard model (SM) is to look for the collisions with the highest momentum-transfer particles. Typically, one chooses a particular model, and the event selection is optimized to enhance its contribution against the SM expectation. The absence of any deviation in data provides a limit on the production cro...

Searches for New Physics in Photonic Final States at LEP

A brief review of searches for physics beyond the Standard Model in photonic final states at LEP is given here. These include searches for supersymmetry, large extra dimensions and contact interactions. Recent results from all four LEP experiments are presented, including improved limits on the new scale of gravity for models with large extra dimensions and the most precise direct measurement o...

Searches for New Physics in Photon Final States

The Run I results on the searches for new physics in photon final states were intriguing. The rare eeγγ 6ET candidate event and the measured event rate for the signature l + γ + 6ET, which was 2.7 sigma above the Standard Model predictions, sparked signature-based searches in the γγ +X and lγ +X channels. With more data in Run II we should be able to answer a simple question: was it an anomaly ...

EU Enlargement: The New Member States and Agricultural Trade Potentials