Speaker
Peter Gysbers
(TRIUMF / UBC)
Description
We examine the nuclear reactions 7Li(p,$\gamma$)8Be and 7Li(p,e+e-)8Be from an ab initio perspective.
Using the no-core shell model with continuum technique, with chiral nucleon-nucleon and three-nucleon forces as input, we obtain an accurate description of both 8Be bound states and p+7Li scattering states.
We calculate radiative capture reactions in which enough energy is released to produce electron-positron pairs. The distribution of pairs can be compared to recent ATOMKI experiments where an anomaly in the data was used to posit the existence of a new particle.
Author
Peter Gysbers
(TRIUMF / UBC)
Co-author
Petr Navratil
(TRIUMF)