New constraints on ultraheavy dark matter from the LZ experiment

Abstract

Searches for dark matter with liquid xenon time projection chamber experiments have traditionally focused on the region of the parameter space that is characteristic of weakly interacting massive particles, ranging from a few GeV/$c^2$ to a few TeV/$c^2$. Models of dark matter with a mass much heavier than this are well motivated by early production mechanisms different from the standard thermal freeze-out, but they have generally been less explored experimentally. In this work, we present a re-analysis of the first science run (SR1) of the LZ experiment, with an exposure of $0.9$ tonne$\times$year, to search for ultraheavy particle dark matter. The signal topology consists of multiple energy deposits in the active region of the detector forming a straight line, from which the velocity of the incoming particle can be reconstructed on an event-by-event basis. Zero events with this topology were observed after applying the data selection calibrated on a simulated sample of signal-like events. New experimental constraints are derived, which rule out previously unexplored regions of the dark matter parameter space of spin-independent interactions beyond a mass of 10${}^{17}$ GeV/$c^2$.

9 pages, 7 figures

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• From Capture to Collapse: Revisiting Black Hole formation by Fermionic Asymmetric Dark Matter in Neutron Stars
• Development & Characterization of Electrodes for large-scale Xenon Time Projection Chambers
• Listening for ultra-heavy dark matter with underwater acoustic detectors
• Supermassive Dark Stars and their remnants as a possible solution to three recent cosmic dawn puzzles
• Search for New Physics via Low-Energy Electron Recoils with a 4.2 Tonne\times Year Exposure from the LZ Experiment
• Can local White Dwarfs constrain Dark Matter interactions?
• Constraints on ultraheavy dark matter from the CDEX-10 experiment at the China Jinping Underground Laboratory
• Heavy dark matter in rapidly evolving massive stars