Revising neutrino oscillation parameter space with direct flavor-changing interactions
- Department of Physics, Grinnell College, Grinnell, Iowa 50112 (United States)
- Department of Physics and Astronomy, University of Kansas, Lawrence, Kansas 66045 (United States)
We formulate direct, neutrino flavor-changing interactions in a framework that fits smoothly with the parametrization of two- and three-state mixing of massive neutrino states. We show that even small direct interaction strengths could have important consequences on the interpretation of currently running and proposed oscillation experiments. The oscillation amplitude and the borders of the allowed regions in two- and three-flavor mixing parameter space can be sensitive to the presence of direct interactions when the transition probability is small. We use extensively the high sensitivity of the NOMAD experiment to illustrate potentially large effects from small, direct flavor violation. In the purely leptonic sector, we find that the clean {nu}{sub {mu}} and {nu}{sub e} beams from a {mu}{sup +}-{mu}{sup -} collider could provide the sharpest tests of direct flavor violation. (c) 2000 The American Physical Society.
- OSTI ID:
- 20216462
- Journal Information:
- Physical Review. D, Particles Fields, Vol. 61, Issue 11; Other Information: PBD: 1 Jun 2000; ISSN 0556-2821
- Country of Publication:
- United States
- Language:
- English
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