6533b855fe1ef96bd12afd37
RESEARCH PRODUCT
Towards high-precision mass measurements on 74Rb for a test of the CVC hypothesis and the unitarity of the CKM matrix
V. KolhinenAlban KellerbauerKlaus BlaumP. DelahayeDietrich BeckFrank HerfurthManas MukherjeeGeorg BollenH.-j. KlugeGeorges AudiDaniel Rodriguez RodriguezStefan Schwarzsubject
Nuclear physicsPhysicsNuclear and High Energy PhysicsParticle physicsMatrix (mathematics)Large Hadron ColliderUnitarityCabibbo–Kobayashi–Maskawa matrixQ valueISOLTRAPStandard Modeldescription
At the highest possible precisions, atomic-mass measurements can be used to perform fundamental studies. Examples for such studies are a check of the conserved-vector-current (CVC) hypothesis and the unitarity of the Cabibbo-Kobayashi-Maskawa (CKM) matrix, both postulates of the Standard Model. The comparative half-lives Ft of superallowed β decays constitute the nuclear-physics access to these tests. The Q value of the β decay of 74 Rb, one of the three experimentally accessible parameters that enter into the Ft values, has been measured with the ISOLTRAP experiment at ISOLDE/CERN. The ultimate mass precision requirement and the way to achieve it are outlined.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2004-12-01 | Nuclear Physics A |