CP-phase effects on the effective neutrino mass m{sub ee} in the case of quasidegenerate neutrinos

Journal Article · Mon Feb 01 00:00:00 EST 2010 · Physical Review. D, Particles Fields

DOI:https://doi.org/10.1103/PHYSREVD.81.037301· OSTI ID:21409232

Maalampi, J ^[1]; Riittinen, J ^[1]

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1. Department of Physics, P.O. Box 35, FIN-40014 University of Jyvaeskylae (Finland)

We study the possibility that the three mass states of the ordinary active neutrinos actually split into pairs of quasidegenerate states, with {Delta}m{sub kk}{sup '2{approx}}10{sup -12} eV{sup 2} or less, as a result of mixing of active neutrinos with sterile neutrinos. While in laboratory experiments these quasidegenerate pairs will look identical to single active states, the CP phase factors associated with active-sterile mixing might cause cancellations in the effective electron neutrino mass m{sub ee} measured in the neutrinoless double beta decay experiments thereby revealing the split nature of states.

• OSTI ID: 21409232
• Journal Information: Physical Review. D, Particles Fields, Vol. 81, Issue 3; Other Information: DOI: 10.1103/PhysRevD.81.037301; (c) 2010 The American Physical Society; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
CANCELLATION
CP INVARIANCE
DOUBLE BETA DECAY
ELECTRON NEUTRINOS
MASS
MIXING
POWER FACTOR
BETA DECAY
BETA-MINUS DECAY
DECAY
DIMENSIONLESS NUMBERS
ELEMENTARY PARTICLES
FERMIONS
INVARIANCE PRINCIPLES
LEPTONS
MASSLESS PARTICLES
NEUTRINOS
NUCLEAR DECAY