A Caltech Library Service

Direct Detection of Bound States of Asymmetric Dark Matter

Coskuner, Ahmet and Grabowska, Dorota M. and Knapen, Simon and Zurek, Kathryn M. (2018) Direct Detection of Bound States of Asymmetric Dark Matter. . (Unpublished)

[img] PDF - Submitted Version
See Usage Policy.


Use this Persistent URL to link to this item:


We study the reach of direct detection experiments for large bound states (containing 10^4 or more dark nucleons) of Asymmetric Dark Matter. We consider ordinary nuclear recoils, excitation of collective modes (phonons), and electronic excitations, paying careful attention to the impact of the energy threshold of the experiment. Large exposure experiments with keV energy thresholds provide the best (future) limits when the Dark Matter is small enough to be treated as a point particle, but rapidly lose sensitivity for more extended dark bound states, or when the mediator is light. In those cases, low threshold, low exposure experiments (such as with a superfluid helium, polar material or superconducting target) are often more sensitive due to coherent enhancement over the dark nucleons. We also discuss indirect constraints on composite Asymmetric Dark Matter arising from self-interaction, formation history and the properties of the composite states themselves.

Item Type:Report or Paper (Discussion Paper)
Related URLs:
URLURL TypeDescription Paper
Additional Information:We thank Marat Freytsis, Keisuke Harigaya, Tom Melia, Matt Pyle, Surjeet Rajendran, Harikrishnan Ramani, Diego Redigolo, Tomer Volansky and Tien-Tien Yu for useful discussions, and Tomer Volansky and Tien-Tien Yu for assistance with the QEdark package. KZ is supported by the DoE under contract No. DE-AC02-05CH11231. AC and KZ are supported by the Quantum Information Science Enabled Discovery (QuantISED) for High Energy Physics (KA2401032). DMG is funded under NSF Grant 32539-13067-44-PHHXM and DOE Grant 041386-002. Part of this work was performed at the Aspen Center for Physics, which is supported by National Science Foundation grant PHY-1607611. DMG thanks the Aspen Center for Physics and Kavli Institute for the Physics and Mathematica of the Universe (IPMU) for the hospitality shown while this work was being completed. The work by SK was supported in part by the LDRD program of LBNL under contract DE-AC02-05CH11231, and by the National Science Foundation (NSF) under grants No. PHY-1002399 and PHY-1316783. SK also acknowledges support from DOE grant DE-SC0009988 and from the Kavli Institute for Theoretical Physics, supported in part by the National Science Foundation under Grant No. NSF PHY-1748958, where part of this work was performed.
Funding AgencyGrant Number
Department of Energy (DOE)DE-AC02-05CH11231
Quantum Information Science Enabled Discovery for High Energy PhysicsKA2401032
Department of Energy (DOE)041386-002
Department of Energy (DOE)DE-SC0009988
Record Number:CaltechAUTHORS:20190612-132126066
Persistent URL:
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:96328
Deposited By: Tony Diaz
Deposited On:12 Jun 2019 20:55
Last Modified:03 Oct 2019 21:21

Repository Staff Only: item control page