Welcome to the new version of CaltechAUTHORS. Login is currently restricted to library staff. If you notice any issues, please email coda@library.caltech.edu
Published September 26, 2014 | Submitted + Published
Journal Article Open

Stable Bound States of Asymmetric Dark Matter

Abstract

The simplest renormalizable effective field theories with asymmetric dark matter bound states contain two additional gauge singlet fields, one being the dark matter and the other a mediator particle that the dark matter annihilates into. We examine the physics of one such model with a Dirac fermion as the dark matter and a real scalar mediator. For a range of parameters the Yukawa coupling of the dark matter to the mediator gives rise to stable asymmetric dark matter bound states. We derive properties of the bound states including nuggets formed from N ≫ 1 dark matter particles. We also consider the formation of bound states in the early Universe and direct detection of dark matter bound states. Many of our results also hold for symmetric dark matter.

Additional Information

© 2014 American Physical Society. Received 28 July 2014; published 26 September 2014. We would like to thank Sean Carroll, Clifford Cheung, Francis-Yan Cyr-Racine, Michael Ramsey-Musolf, David Sanford, Philip Schuster, and Natalia Toro for useful discussions and comments on a draft. Y. Z. thanks Xiaoyong Chu for a comment on the calculation of the bound state formation rate. This work is supported by the Gordon and Betty Moore Foundation through Grant No. 776 to the Caltech Moore Center for Theoretical Cosmology and Physics and by the DOE Grant No. DESC0011632 and also by a DOE Early Career Award under Grant No. DE-SC0010255.

Attached Files

Published - PhysRevD.90.055030.pdf

Submitted - 1407.4121.pdf

Files

1407.4121.pdf
Files (2.0 MB)
Name Size Download all
md5:87f85995f37cd2735f173f1dc52452e9
1.2 MB Preview Download
md5:95273f4417392d708a7c48ff7f37d9bd
773.0 kB Preview Download

Additional details

Created:
August 20, 2023
Modified:
October 26, 2023