Prof.
Oscar Naviliat-Cuncic
(National Superconducting Cyclotron Laboratory and Department of Physics and Astronomy, Michigan State University, East-Lansing, Michigan, USA)
05/08/2016 09:00
Precision measurements in neutron and nuclear decays have played a crucial role in the development of the vector-axial-vector (V-A) theory of the weak interactions, which is contained today in the standard electroweak model (SM). Experiments in nuclear beta decay offer today a sensitive window to search for physics beyond the SM which is complementary to direct searches carried out at high...
M.
Leendert Hayen
(KU Leuven, Instituut voor Kern- en Stralingsfysica Heverlee, Belgium)
05/08/2016 10:00
A precise understanding of the beta spectrum shape proves an indispensable tool in the pursuit of Beyond Standard Model (BSM) physics. It opens up possibilities for scalar and tensor current searches and allows a study of nuclear structure dependent effects through the weak magnetism interaction [N. Severijns et al. Rev. Mod. Phys. 78, 991-1040 (2006)]. The latter is a contamination of the...
Prof.
John Hardy
(Cyclotron Institute Texas A&M University, College Station, USA)
05/08/2016 11:00
Very precise measurements in nuclei can offer demanding tests of the Standard Model. In particular, superallowed nuclear beta-decay between 0+ analogue states is a sensitive probe of the vector part of the weak interaction, with the established strength – or F t value – of each such transition being a direct measure of the vector coupling constant, GV. Each transition’s F t value depends on...
Dr
Pierre Delahaye
(Grand Accélérateur National d’Ions Lourds, GANIL, Caen, France)
05/08/2016 12:00
In this talk we discuss the potentials of a new technique of optical orientation of radioactive ions trapped in an open Paul trap, permitting to reach a very high degree of polarization, for Beta decay experiments.
More precisely, laser polarization of the alkali-earth ions 23Mg+ and 39Ca+ in a Paul trap and detection of the emitted electron and recoil ion shall enable the measurement of the...
Prof.
Dan Melconian
(Cyclotron Institute Texas A&M University, College Station, USA)
05/08/2016 14:00
Nuclear β decay has a long-standing history of shaping and testing the standard model of particle physics, and it continues to this day with elegant, ultra-precise low-energy nuclear measurements. Experiments observing the angular correlations between the electron, neutrino and recoil momenta following nuclear β decay can be used to search for exotic currents contributing to the dominant (V −...
Dr
Phillipe Velten
(KU Leuven, Instituut voor Kern- en Stralingsfysica, Heverlee, Belgium)
05/08/2016 14:45
Over the years, a large set of measurements and theoretical calculations have been performed, leading to the corrected Ft-values for the superallowed pure Fermi transitions. The weighted mean from these values leads to a high precision value for the Vud quark mixing matrix element, i.e. Vud = 0.97425(22) [1]. In combination with significant advances in the determination of the Vus matrix...
