What are some alternative theories to the Standard Model that involve positrons?

In all cases, the initial positron en- ergies are much higher than the thermal energies of the ambient particles. The positrons lose energy continuously via ... The positron has the opposite charge and magnetic moment, and the same mass (511.0034 keV/c 2 ) and spin as the electron. Jul 2, 2020 ... ... positrons. Cortina Gil, E. et al. (2020) Search for heavy neutral lepton production in K+ decays to positrons. Physics Letters B, 807, 135599. The Atomic, Molecular, Optical and Positron Physics (AMOPP) group explores many different topics and has both experimental and theoretical research programs in ... Professor Gidley is developing and applying positron and positronium spectroscopies to probe porous materials at and below the nanometer scale. 4th Workshop of the 2nd ECFA / DESY Study on Physics and Detectors for a Linear Electron - Positron Collider. 20-23 March 1999. Oxford,; United Kingdom. Specific setups were developed to test the LYSO + SiPM modules that are already bonded but not enclosed in a box. Positron Physics at Jefferson Lab e+@JLab. 2023 JLUO Annual Meeting. June 26th- 28th, 2023. (i). Positron White Paper. (ii) Two photon exchange. May 23, 2016 ... In this work, we review the physics and the scientific literature and evaluate the effect of these additional phenomena on the PET data for each of a series of ... A positron is a positively charge subatomic particle that has the same mass and magnitude of charge as an electron.