PoS - Proceedings of Science
Volume 398 - The European Physical Society Conference on High Energy Physics (EPS-HEP2021) - T01: Astroparticle and Gravitational Waves
Impact of operator interference in dark matter direct detection experiments
A. Brenner*, G. Herrera, A. Ibarra, S. Kang, A. Rappelt, S. Scopel and G. Tomar
Full text: Not available
Abstract
For dark matter particles with spin up to 1/2, the non-relativistic effective field theory provides 28 coupling strengths for the dark matter-nucleon interactions. The standard assumption of collaborations is that dark matter couples equally to protons and neutrons. Since this is not necessarily true, we developed a method to derive limits taking the interference among operators into account. Using this method and data provided from XENON1T and PICO60, the relaxation of the published cross-section limits can be up to four orders of magnitude. Further we extended the developed method which now allows to do a combined analysis of several experiments. The combination of experiments can strengthen the limits by up to four orders of magnitude.
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