New Physics in Neutron Beta Decay
Jacek Holeczek, Michal Ochman, Elzbieta Stephan, Marek Zralek
TL;DR
This paper constrains new physics beyond the Standard Model by analyzing neutron beta decay data using a comprehensive effective Hamiltonian approach with the latest experimental results.
Contribution
It introduces a model-independent analysis of neutron beta decay to set limits on possible new physics interactions beyond the Standard Model.
Findings
Limits on scalar, vector, and tensor couplings are established.
The analysis incorporates the most recent experimental data.
Constraints improve previous bounds on non-Standard Model interactions.
Abstract
Limits on parameters describing physics beyond the Standard Model are presented. The most general Lorentz invariant effective Hamiltonian at the quark-lepton level involving vector, scalar and tensor operators has been used. The fits have been done using the most precise and up to date experimental data for correlation coefficients measured in free neutron beta decay as well as the Fierz term measured in superallowed Fermi decays.
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Taxonomy
TopicsAtomic and Subatomic Physics Research · Particle physics theoretical and experimental studies · Neutrino Physics Research