283 research outputs found
Implications of the JHF-Kamioka neutrino oscillation experiment
After quickly reviewing the existing evidence for neutrino oscillations, I
summarise the goals and capabilities of the JHF-Kamioka long baseline superbeam
experiment. Theoretical implications of what this experiment could potentially
discover are then discussed.Comment: 10 pages, 3 figures, LaTeX, ws-procs9x6.cls. Invited talk at the
Workshop on Physics at the Japan Hadron Facility (JHF), Adelaide, 14-21 March
200
The brane as a Higgs domain wall: ideas and issues
The most obvious field-theoretic model for a brane is a scalar field domain
wall or kink. I discuss how this idea can be connected with spontaneous
internal symmetry breaking via a mechanism called the ``clash of symmetries''.
Compatibility with Randall and Sundrum's warped metric alternative to
compactification is then demonstrated. I end with brief remarks about open
questions.Comment: 4 pages. Invited talk at Susy06. To appear in the proceeding
Generalised leptonic colour
It is conceivable that there is an `colour' gauge group for
leptons, analogous to the gauged colour group of the quarks. The
standard model emerges as the low energy effective theory when the leptonic
colour is spontaneously broken. The simplest such generalised leptonic colour
models are constructed. We show that the see-saw mechanism for small neutrino
masses, along with the theoretical constraint of electric charge quantisation,
suggests that the models with are the theoretically most
promising cases. A striking feature of generalized leptonic colour is the
physics associated with the extra leptonic degrees of freedom -- the liptons.
These particles can potentially be discovered at future colliders, such as the
LHC, making the idea testable in the near future.Comment: about 7 page
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