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Quantifying the sensitivity of oscillation experiments to the neutrino mass ordering
KTH, School of Engineering Sciences (SCI), Theoretical Physics.ORCID iD: 0000-0001-5948-9152
2014 (English)In: Journal of High Energy Physics (JHEP), ISSN 1029-8479, E-ISSN 1126-6708, no 3, 28- p.Article in journal (Refereed) Published
Abstract [en]

Determining the type of the neutrino mass ordering ( normal versus inverted) is one of the most important open questions in neutrino physics. In this paper we clarify the statistical interpretation of sensitivity calculations for this measurement. We employ standard frequentist methods of hypothesis testing in order to precisely define terms like the median sensitivity of an experiment. We consider a test statistic T which in a certain limit will be normal distributed. We show that the median sensitivity in this limit is very close to standard sensitivities based on Delta chi(2) values from a data set without statistical fluctuations, such as widely used in the literature. Furthermore, we perform an explicit Monte Carlo simulation of the INO, JUNO, LBNE, NO nu A, and PINGU experiments in order to verify the validity of the Gaussian limit, and provide a comparison of the expected sensitivities for those experiments.

Place, publisher, year, edition, pages
2014. no 3, 28- p.
Keyword [en]
Neutrino Physics, Statistical Methods
National Category
Physical Sciences
URN: urn:nbn:se:kth:diva-144368DOI: 10.1007/JHEP03(2014)028ISI: 000332965200001ScopusID: 2-s2.0-84896457419OAI: diva2:713311

QC 20140422

Available from: 2014-04-22 Created: 2014-04-22 Last updated: 2014-04-22Bibliographically approved

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Blennow, Mattias
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