Abstract
Current problems with the solar model may be alleviated if a significant amount of dark matter from the galactic halo is captured in the Sun. We discuss the capture process in the case where the dark matter is a Dirac fermion and the background halo consists of equal amounts of dark matter and anti-dark matter. By considering the case where dark matter and anti-dark matter have different cross sections on solar nuclei as well as the case where the capture process is considered to be a Poisson process, we find that a significant asymmetry between the captured dark particles and anti-particles is possible even for an annihilation cross section in the range expected for thermal relic dark matter. Since the captured number of particles are competitive with asymmetric dark matter models in a large range of parameter space, one may expect solar physics to be altered by the capture of Dirac dark matter. It is thus possible that solutions to the solar composition problem may be searched for in these type of models.
Highlights
The idea of elementary particles dates back to ancient Greece several centuries BC
An asymmetry in the captured number of Dark Matter (DM) particles in the Sun can occur for two reasons
The capture rates of DM and anti-DM can be different due to different scattering cross sections on regular matter or there can be an asymmetry in the background density of DM and anti-DM much like the asymmetry in the barynic sector
Summary
The idea of elementary particles dates back to ancient Greece several centuries BC. The meaning of the word atom is to be indivisible. The concept of physical atoms was first used to explain why elements combine to form compounds in small number ratios. Thompson discovered the electron [1] He drew the conclusion that the electron was a component of the, no longer indivisible, atoms. In 1918, he discovered the proton as the nucleus of hydrogen. He predicted the existence of the neutron by the mass of different isotopes changing in multiples of a certain number. Later the top and bottom quarks were proposed to explain observations of CP-violation. All of the particles of the SM have been found in experiments, with the Higgs boson being found in 2012, some 40 years after it was predicted. While the SM, as it is, has produced astonishing predictions of the particles and their attributes, it does have some problems
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