MINOS Document 955-v1

Event Time-Profiling as MINOS Window to Atmospheric Neutrino Strangeness Production and Double Nucleon Decay

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John Urish
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John Urish
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29 Aug 2003, 12:00
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29 Aug 2003, 12:00
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29 Aug 2003, 12:00
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08 Sep 2006, 21:17
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The MINOS far detector, a scintillator tracker instrumented for nanosecond timing which will accumulate a non-accelerator exposure of several kiloton-decades, provides opportunity to identify reactions of few GeV visible energy which yield ${\rm K}^{+}$ meson(s). Interactions of this type comprise a major portion of strangeness production initiated by atmospheric neutrinos. Such events, upon full reconstruction, will exhibit a distinctive ``twin peaks" time profile for which light of the primary interaction gives the initial pulse and the subsequent ${\rm K}^{+}$ decay nearby yields a second pulse delayed by few tens of nanoseconds. By measuring the heretofore unresolved atmospheric \neut~strangeness production component, MINOS can set a benchmark for experiments striving for improved lifetime limits on SUSY proton decay ${\rm p} \rightarrow {\rm K}^{+} \nu$. Additionally MINOS can enable first-ever limit-setting or discovery of a baryon instability mode predicted in certain unification models, namely $\Delta S = 2$ double nucleon decay within nuclei, e.g. ${\rm D} \rightarrow {\rm K}^{+} {\rm K}^{*}$.
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Posted by W. Anthony Mann
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