6533b86dfe1ef96bd12c9dd4
RESEARCH PRODUCT
Estimation of bounds for left-right mixing from nuclear double beta decay processes
O. CivitareseJouni Suhonensubject
PhysicsNuclear physicsNuclear and High Energy PhysicsSupernovaMuonYield (chemistry)Double beta decayNuclear structureOrder (group theory)High Energy Physics::ExperimentAtomic physicsMixing (physics)Complement (set theory)description
Abstract Nuclear matrix elements, extracted from a systematic calculation of neutrinoless double beta decay rates for 0 + g.s →o + g.s transitions in 76 Ge, 82 Se, 128 Te, 130 Te and 136 Xe, have been used to compute bounds on the left-right mixing angle ζ of the weak currents. The parameters of the nuclear model have been fixed by calculating the corresponding two-neutrino double beta decay half lives. The present analysis favours a mixing of the order of |tanξ| −3 which is to be compared with those obtained in muon decay (|tan ξ | ⩽ 0.035) and in supernova (|tan ξ | ⩽ 10 −5 ) analysis. It shows that nuclear structure calculations yield estimates on ξ which complement the existing data.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 1993-08-01 | Physics Letters B |