Production of Dark Sector Particles via Resonant Positron Annihilation on Atomic Electrons
Production of Dark Sector Particles via Resonant Positron Annihilation on Atomic Electrons
Resonant positron annihilation on atomic electrons provides a powerful method to search for light new particles coupled to <a:math xmlns:a="http://www.w3.org/1998/Math/MathML" display="inline"><a:mrow><a:msup><a:mrow><a:mi>e</a:mi></a:mrow><a:mrow><a:mo>+</a:mo></a:mrow></a:msup><a:msup><a:mrow><a:mi>e</a:mi></a:mrow><a:mrow><a:mo>−</a:mo></a:mrow></a:msup></a:mrow></a:math>. Reliable estimates of production rates require a detailed characterization of electron momentum distributions. We describe a general method that harnesses the target material Compton profile to properly include electron …