TY - JOUR

T1 - Constraints on a general 3-generation neutrino mass matrix from neutrino data

T2 - Application to the MSSM with R-parity violation

AU - Abada, A.

AU - Losada, M.

PY - 2000/10/2

Y1 - 2000/10/2

N2 - We consider a general symmetric (3×3) mass matrix for three generations of neutrinos. Imposing the constraints, from the atmospheric neutrino and solar neutrino anomalies as well as from the CHOOZ experiment, on the mass squared differences and on the mixing angles, we identify the ranges of allowed inputs for the 6 matrix elements. We apply our results to Majorana left-handed neutrino masses generated at tree level and through fermion-sfermion loop diagrams in the MSSM with R-parity violation. The present experimental results on neutrinos from laboratories, cosmology and astrophysics are implemented to either put bounds on trilinear ( λijk,λ′ijk ) and bilinear ( μe,μ,τ ) R-parity-violating couplings or constrain combinations of products of these couplings.

AB - We consider a general symmetric (3×3) mass matrix for three generations of neutrinos. Imposing the constraints, from the atmospheric neutrino and solar neutrino anomalies as well as from the CHOOZ experiment, on the mass squared differences and on the mixing angles, we identify the ranges of allowed inputs for the 6 matrix elements. We apply our results to Majorana left-handed neutrino masses generated at tree level and through fermion-sfermion loop diagrams in the MSSM with R-parity violation. The present experimental results on neutrinos from laboratories, cosmology and astrophysics are implemented to either put bounds on trilinear ( λijk,λ′ijk ) and bilinear ( μe,μ,τ ) R-parity-violating couplings or constrain combinations of products of these couplings.

KW - 13.15.+g

KW - 14.70.Bh

KW - 95.30.Cq

UR - http://www.scopus.com/inward/record.url?scp=0001842264&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0001842264&partnerID=8YFLogxK

U2 - 10.1016/S0550-3213(00)00397-7

DO - 10.1016/S0550-3213(00)00397-7

M3 - Article

AN - SCOPUS:0001842264

VL - 585

SP - 45

EP - 78

JO - Nuclear Physics B

JF - Nuclear Physics B

SN - 0550-3213

IS - 1-2

ER -