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MINOS Document 11328-v1

Muon Antineutrino Disappearance in the MINOS Experiment

Document #:
MINOS-doc-11328-v1
Document type:
Thesis
Submitted by:
Nicholas Devenish
Updated by:
Nicholas Devenish
Document Created:
04 Dec 2015, 08:46
Contents Revised:
04 Dec 2015, 08:46
Metadata Revised:
04 Dec 2015, 08:48
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Abstract:
Antineutrinos from the set of 7.09\e{20} Protons-on-target (POT) of \FHC and 3.40\e{20} POT of
\RHC MINOS beam data is analysed to extract the antineutrino atmospheric-scale
oscillation parameters \dmbar and \snbar. Using the Feldman-Cousins
statistical technique to account for systematic and statistical errors,
$\dmbar=2.58^{+0.26}_{-0.17} \e{-3}\eV^2$ and $\snbar=0.96^{+0.04}_{-0.10}$
were measured. This measurement of \dmbar improves on the previous world
limits from Super-K by a factor of five. Any observed difference between the
neutrino and antineutrino oscillation parameters could be an indication of CPT
violation, or otherwise physics beyond the standard model. This measurement is
consistent with the global limits on \dm and \sn for neutrinos.
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