Determination of the neutrino mass ordering by combining PINGU and Daya Bay II
2013 (English)In: Journal of High Energy Physics (JHEP), ISSN 1029-8479, E-ISSN 1126-6708, Vol. 2013, no 9, 089- p.Article in journal (Refereed) Published
The relatively large measured value of θ 13 has opened various possibilities to determine the neutrino mass ordering, among them using PINGU, the low-energy extension of the IceCube neutrino telescope, to observe matter effects in atmospheric neutrinos, or a high statistics measurement of the neutrino energy spectrum at a reactor neutrino experiment with a baseline of around 60 km, such as the Daya Bay II project. In this work we point out a synergy between these two approaches based on the fact that when data are analysed with the wrong neutrino mass ordering the best fit occurs at different values of varDelta m 312 for PINGU and Daya Bay II. Hence, the wrong mass ordering can be excluded by a mismatch of the values inferred for varDelta m 312, thanks to the excellent accuracy for varDelta m 312 of both experiments. We perform numerical studies of PINGU and Daya Bay II sensitivities and show that the synergy effect may lead to a high significance determination of the mass ordering even in situations where the 3individual experiments obtain only poor sensitivity.
Place, publisher, year, edition, pages
2013. Vol. 2013, no 9, 089- p.
Neutrino Physics, Standard Model
IdentifiersURN: urn:nbn:se:kth:diva-133198DOI: 10.1007/JHEP09(2013)089ISI: 000324892100002ScopusID: 2-s2.0-84884563210OAI: oai:DiVA.org:kth-133198DiVA: diva2:659822
QC 201310282013-10-282013-10-282013-11-06Bibliographically approved