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Chiral Effective Field Theory

All articles tagged with #chiral effective field theory

science2 years ago

"Groundbreaking Experiment Challenges Dominant Nucleus Theory"

A new experiment measuring the strong nuclear force in helium-4 nuclei has revealed a significant discrepancy between theoretical predictions and experimental results. The swelling of the nuclei, which is a crucial factor in understanding nuclear matter and neutron stars, was found to be twice as large as expected. This discrepancy challenges the current leading theory of nuclear interactions, known as chiral effective field theory, and highlights the need for a better understanding of even the simplest nuclear systems. Further research is needed to determine the cause of this discrepancy and improve our understanding of the strong nuclear force.

physics2 years ago

Exploring Helium Nucleus Beyond Ground State.

A new electron-scattering experiment has remeasured the transition from the ground state to the first excited state of the helium nucleus, confirming a discrepancy with theoretical predictions. The results provide new insights into the spatial structure of the excited state and touch on fundamental questions about our understanding of nuclear interactions. The discrepancies imply that the form factor may serve as a tool for probing small contributions to nuclear forces, but researchers need a better understanding of the theoretical uncertainties.