Calculations of radiative capture and pair production for the <sup>8</sup>Be composite system
ORAL
Abstract
Through first-principles calculations of 7Li(p, γ)8Be and 7Li(p, e+e-)8Be capture, we examine the nuclear processes related to the ATOMKI anomaly (which posits the existence of a new boson with a mass of 17 MeV). We calculate the energy and decay of the relevant 1+ resonances in 8Be.
We apply the no-core shell model with continuum technique to investigate reactions involving both p+7Li and n+7Be with 8Be as the composite system. This method enables accurate description of both bound states and the continuum using chiral nucleon-nucleon and three-nucleon forces as input. We report phase-shifts and cross-sections for a suite of scattering and reaction processes.
We apply the no-core shell model with continuum technique to investigate reactions involving both p+7Li and n+7Be with 8Be as the composite system. This method enables accurate description of both bound states and the continuum using chiral nucleon-nucleon and three-nucleon forces as input. We report phase-shifts and cross-sections for a suite of scattering and reaction processes.
*Supported by the NSERC grants No. SAPIN-2016-00033 and No. PGSD3-535536-2019. TRIUMF receives federal funding via acontribution agreement with the National Research Council of Canada.
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Presenters
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Peter H Gysbers
- University of British Columbia / TRIUMF
- UBC/TRIUMF