Nuclear ab initio calculations of He-6 beta-decay for beyond the Standard Model studies
Artikel i vetenskaplig tidskrift, 2022

Precision measurements of beta-decay observables offer the possibility to search for deviations from the Standard Model. A possible discovery of such deviations requires accompanying first-principles calculations. Here we compute the nuclear structure corrections for the beta-decay of He-6 which is of central interest in several experimental efforts. We employ the impulse approximation together with wave functions calculated using the ab initio no-core shell model with potentials based on chiral effective field theory. We use these state-of-the-art calculations to give a novel and comprehensive analysis of theoretical uncertainties. We find that nuclear corrections, which we compute within the sensitivity of future experiments, create significant deviation from the naive Gamow-Teller predictions, making their accurate assessment essential in searches for physics beyond the Standard Model. (C) 2022 The Author(s). Published by Elsevier B.V.

Författare

Ayala Glick-Magid

The Hebrew University Of Jerusalem

Christian Forssén

Chalmers, Fysik, Subatomär, högenergi- och plasmafysik

Daniel Gazda

Nuclear Physics Institute

Doron Gazit

The Hebrew University Of Jerusalem

Peter Gysbers

University of British Columbia (UBC)

TRIUMF

Petr Navratil

TRIUMF

Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

0370-2693 (ISSN)

Vol. 832 137259

Svaga och sällsynta processer i atomkärnan: fundamentala symmetrier och mörk materia

Vetenskapsrådet (VR) (2017-04234), 2018-01-01 -- 2021-12-31.

Ämneskategorier

Subatomär fysik

Teknisk mekanik

Teoretisk kemi

Infrastruktur

C3SE (Chalmers Centre for Computational Science and Engineering)

DOI

10.1016/j.physletb.2022.137259

Mer information

Senast uppdaterat

2022-09-26