Abstract
I will make some general comments about the search for dark matter and other new particles, contrasting current research trends with those 10 years ago. I will then focus on recent ideas for direct detection experiments to search for dark matter with masses in the MeV-to-GeV range. I will then discuss briefly three topics: (i) the solar neutrino background (or “how low in cross section (interaction strength) can future direct-detection experiments probe before solar neutrinos become an irreducible background”), (ii) novel constraints on low-mass dark matter from Supernova 1987A, and (iii) strongly interacting dark matter (or “how large in cross section can direct-detection experiments probe before terrestrial effects stop sub-GeV dark matter from reaching the detector”).
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The discovery at the LHC of the Higgs boson is a notable success, and while the current lack of evidence for other particles at the Weak scale has sharpened the hierarchy problem, the Higgs boson currently conforms to the Standard Model expectations.
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Acknowledgements
I would like to thank the Simons Foundation for their generous support of this symposium. I would also like to thank my collaborators on the projects discussed in this proceeding, Jae Hyeok Chang, Timon Emken, Chris Kouvaris, Sam McDermott, Mukul Sholapurkar, and Tien-Tien Yu. My research is currently supported by the DoE under Grant Nos. DE-SC0017938 and DE-SC0018952, the Heising-Simons Foundation under Grant No. 79921, and the US-Israel BSF under Grant No. 2016153.
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Essig, R. (2019). Direct Detection of Sub-GeV Dark Matter: Models and Constraints. In: Essig, R., Feng, J., Zurek, K. (eds) Illuminating Dark Matter. Astrophysics and Space Science Proceedings, vol 56. Springer, Cham. https://doi.org/10.1007/978-3-030-31593-1_7
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