6533b822fe1ef96bd127d937
RESEARCH PRODUCT
Microscopic calculations of isospin-breaking corrections to superallowed beta-decay
Wojciech SatulaM. RafalskiWitold NazarewiczJacek Dobaczewskisubject
PhysicsParticle physicsNuclear Theoryta114Physics beyond the Standard ModelHigh Energy Physics::PhenomenologyNuclear TheoryNuclear structureGeneral Physics and AstronomyFOS: Physical sciencesNuclear matterBeta decayNuclear physicsNuclear Theory (nucl-th)Standard Model (mathematical formulation)IsospinNuclear ExperimentNuclear densityFermi Gamma-ray Space Telescopedescription
The superallowed beta-decay rates that provide stringent constraints on physics beyond the Standard Model of particle physics are affected by nuclear structure effects through isospin-breaking corrections. The self-consistent isospin- and angular-momentum-projected nuclear density functional theory is used for the first time to compute those corrections for a number of Fermi transitions in nuclei from A=10 to A=74. The resulting leading element of the CKM matrix, |V_{ud}|= 0.97447(23), agrees well with the recent result by Towner and Hardy [Phys. Rev. C {\bf 77}, 025501 (2008)].
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2011-01-05 |