WISArD : Weak Interaction Studies with .sup.32./sup.Ar Decay

0558918 - ÚJF 2023 RIV IT eng C - Conference Paper (international conference)
Alfaurt, P. - Ascher, P. - Atanasov, D. - Blank, B. - Cresto, F. - Daudin, L. - Flechard, X. - Gerbaux, M. - Giovinazzo, J. - Grévy, S. - Kurtukian-Nieto, T. - Lienard, E. - Pomorski, M. - Severijns, N. - Vanlangendonck, S. - Versteegen, M. - Zákoucký, Dalibor
WISArD : Weak Interaction Studies with ³²Ar Decay.
Proceedings of Science. Vol. 380. Trieste: Sissa Medialab srl, 2022, č. článku 449. ISSN 1824-8039.
[Particles and Nuclei International Conference 2021 /22./. virtual (PT), 05.09.2021-10.09.2021]
Research Infrastructure: CERN-CZ II - 90104
Institutional support: RVO:61389005
Keywords : WISArD experiment * ISOLDE * CERN
OECD category: Atomic, molecular and chemical physics (physics of atoms and molecules including collision, interaction with radiation, magnetic resonances, Mössbauer effect)

The WISArD experiment is probing the possible existence of exotic currents in the electroweak sector using nuclear beta decay, to improve the constraints on beyond Standard Model physics. The setup of the experiment underwent a full upgrade between 2018 and 2021 in preparation of a second run of data taking at ISOLDE, CERN, scheduled for October 2021. The detector stage was completely renewed to improve statistics and minimize the main systematic effects identified in a proof-of-principle run in 2018. With this upgrade, the objective is to reach the per-mil level of uncertainty on the angular correlation coefficent alpha and on the Fierz interference term b, in a pure Fermi transition. In this case, both parameters are directly sensitive to the possible contribution of exotic scalar currents.

Permanent Link: https://hdl.handle.net/11104/0332460