Millicharged Dark Matter Propagating in Space and Earth


Bloch, I. (2022). Millicharged Dark Matter Propagating in Space and Earth. Perimeter Institute. https://pirsa.org/22030115


Bloch, Itay. Millicharged Dark Matter Propagating in Space and Earth. Perimeter Institute, Mar. 29, 2022, https://pirsa.org/22030115


          @misc{ pirsa_22030115,
            doi = {10.48660/22030115},
            url = {https://pirsa.org/22030115},
            author = {Bloch, Itay},
            keywords = {Particle Physics},
            language = {en},
            title = {Millicharged Dark Matter Propagating in Space and Earth},
            publisher = {Perimeter Institute},
            year = {2022},
            month = {mar},
            note = {PIRSA:22030115 see, \url{https://pirsa.org}}

Itay Bloch Tel Aviv University

Talk Type Scientific Series


The possibility of having DM (or a fraction of it) charged under a dark U(1) which mixes with the U(1)EM has been of interest for many years. Many different experiments search for such a millicharged DM (MCDM), under the assumption that its velocity would be distributed according to MB. However, our galaxy and local environment have a variety of effects that make this assumption highly non trivial. In this talk, I will discuss the effects of galactic magnetic fields, collisions with Cosmic rays, acceleration from Supernovae remnants, and energy losses due collisions with particles in the interstellar medium on the velocity distribution of MCDM outside the solar system. Furthermore, to arrive at an underground detector, the MCDM would need to pass through the solar wind, not be deflected by earth's magnetic field, and pass through earth's crust to reach the underground lab. We will discuss these effects as well. I will end the talk by discussing the importance of these effects on Direct Detection experiments, and whether MCDM could explain the XENON excess.

Zoom Link: https://pitp.zoom.us/j/92701168758?pwd=UlY5Smlrd1MzWmI4ZkNyNVI5d3JIUT09