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Title: Muon Antineutrino Disappearance in the MINOS Experiment

Antineutrinos from the set of 7.09$$\times 10^{20}$$ Protons-on-target (POT) of $$\nu_\mu\textrm{-dominant}$$ and 3.40$$\times 10^{20}$$ POT of $$\bar\nu_\mu\textrm{-enhanced}$$ MINOS beam data is analysed to extract the antineutrino atmospheric-scale oscillation parameters $$\left|\Delta\bar m^2\right|$$ and $$\sin^2\left(2\bar\theta\right)$$. Using the Feldman-Cousins statistical technique to account for systematic and statistical errors, $$\left|\Delta\bar m^2\right|=2.58^{+0.26}_{-0.17} \times 10^{-3}~\textrm{eV}^2$$ and $$\sin^2\left(2\bar\theta\right)=0.96^{+0.04}_{-0.10}$$ were measured. This measurement of $$\left|\Delta\bar m^2\right|$$ 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 $$\left|\Delta m^2\right|$$ and $$\sin^2\left(2\theta\right)$$ for neutrinos.
Authors:
 [1]
  1. Univ. of Sussex, Brighton (United Kingdom)
Publication Date:
OSTI Identifier:
1248223
Report Number(s):
FERMILAB-THESIS--2015-34
1421891
DOE Contract Number:
AC02-07CH11359
Resource Type:
Thesis/Dissertation
Research Org:
Fermi National Accelerator Laboratory (FNAL), Batavia, IL (United States)
Sponsoring Org:
USDOE Office of Science (SC), High Energy Physics (HEP) (SC-25)
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS