Phys. Rev. D 72, 013009 (2005) [6 pages]

Another possible way to determine the neutrino mass hierarchy

Abstract

References

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Hiroshi Nunokawa^1,*, Stephen Parke^2,†, and Renata Zukanovich Funchal^3,‡
¹Departamento de Física, Pontifícia Universidade Católica do Rio de Janeiro, C. P. 38071, 22452-970, Rio de Janeiro, Brazil
²Theoretical Physics Department, Fermi National Accelerator Laboratory, P.O. Box 500, Batavia, Illinois 60510, USA
³Instituto de Física, Universidade de São Paulo, C. P. 66.318, 05315-970 São Paulo, Brazil

Received 30 March 2005; published 29 July 2005

We show that by combining high precision measurements of the atmospheric δm² in both the electron and muon neutrino (or antineutrino) disappearance channels one can determine the neutrino mass hierarchy. The required precision is a very challenging fraction of one per cent for both measurements. At even higher precision, sensitivity to the cosine of the CP violating phase is also possible. This method for determining the mass hierarchy of the neutrino sector does not depend on matter effects.

URL:

http://link.aps.org/doi/10.1103/PhysRevD.72.013009

DOI:

10.1103/PhysRevD.72.013009

PACS:

14.60.Pq, 25.30.Pt, 28.41.−i

^*Electronic address: nunokawa@fis.puc-rio.br

^†Electronic address: parke@fnal.gov

^‡Electronic address: zukanov@if.usp.br

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Phys. Rev. D 72, 013009 (2005) [6 pages]

Another possible way to determine the neutrino mass hierarchy