Neutrino factory physics study status and an entry level scenario [electronic resource].

Published: Washington, D.C. : United States. Dept. of Energy. Office of Energy Research, 2000.
Oak Ridge, Tenn. : Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy.
Physical Description: 14 pages : digital, PDF file
Additional Creators: Fermi National Accelerator Laboratory, United States. Department of Energy. Office of Energy Research, and United States. Department of Energy. Office of Scientific and Technical Information

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Summary

The status of an ongoing neutrino factory physics study at Fermilab is described, together with a personal view of the parameters required for an entry-level neutrino factory. Recent measurements of atmospheric muon neutrino (ν{sub μ}) fluxes from the Super-Kamiokande (SuperK) collaboration have shown an aximuth-dependent {r{underscore}arrow} baseline dependent-depletion that strongly suggests neutrino oscillations of the type ν{sub μ} {r{underscore}arrow} ν{sub μ}. Since the atmospheric ν{sub e} flux is not similarly depleted, νₓ cannot be ν{sub e}, and must therefore be either ν{sub τ}, or ν{sub s} (a sterile neutrino). These observations have inspired many theoretical papers, several neutrino oscillation experiments proposals, and much interest in the physics community. This interest is well motivated. Understanding the neutrino-mass hierarchy and the mixing matrix that drives flavor oscillations may provide clues that lead to a deeper understanding of physics at very high mass-scales and insights into the physics associated with the existence of more than one lepton flavor. Hence, there is a strong incentive to find a way of measuring the neutrino flavor mixing matrix, confirm and oscillation scheme (three-flavor mixing, four-flavor, n-flavor ?), and determine which mass eigenstate is the heaviest (and which is the lightest). This will require a further generation of accelerator based experiments beyond those currently proposed.

Report Numbers

E 1.99:fermilab--conf-00/016-t
fermilab--conf-00/016-t

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Note

Published through SciTech Connect.
02/01/2000.
"fermilab--conf-00/016-t"
High Intensity Muon Sources, KEK, Tsukuba (JP), 12/01/1999--12/03/1999.
Geer, S.

Funding Information

AC02-76CH03000

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