TY - JOUR
T1 - Z -Portal Continuum Dark Matter
AU - Csáki, Csaba
AU - Hong, Sungwoo
AU - Kurup, Gowri
AU - Lee, Seung J.
AU - Perelstein, Maxim
AU - Xue, Wei
N1 - Funding Information:
We thank Francesca Calore, Barry McCoy, Eun-Gook Moon, Carlos Wagner, Liantao Wang, and Kathryn Zurek for useful discussions. C. C., S. H., G. K., and M. P. were supported in part by the NSF Grant No. PHY-2014071. C. C. was also supported in part by the U.S.-Israeli BSF Grant No. 2016153. S. H. was also supported by the DOE Grants No. DE-SC-0013642 and No. DE-AC02-06CH11357, and by Hans Bethe Postdoctoral fellowship at Cornell. G. K. is supported by the Science and Technology Facilities Council with Grant No. ST/T000864/1. S. L. was supported by the Samsung Science and Technology Foundation and by the National Research Foundation of Korea (NRF) grant funded by the Korea government (MEST) (No. NRF-2021R1A2C1005615). W. X. was supported in part by the DOE Grant No. DE-SC0010296.
Publisher Copyright:
© 2022 authors. Published by the American Physical Society.
PY - 2022/2/25
Y1 - 2022/2/25
N2 - We examine the possibility that dark matter (DM) consists of a gapped continuum, rather than ordinary particles. A weakly interacting continuum (WIC) model, coupled to the standard model via a Z portal, provides an explicit realization of this idea. The thermal DM relic density in this model is naturally consistent with observations, providing a continuum counterpart of the "WIMP miracle."Direct detection cross sections are strongly suppressed compared to ordinary Z-portal WIMP, thanks to a unique effect of the continuum kinematics. Continuum DM states decay throughout the history of the Universe, and observations of cosmic microwave background place constraints on potential late decays. Production of WICs at colliders can provide a striking cascade-decay signature. We show that a simple Z-portal WIC model provides a fully viable DM candidate consistent with all current experimental constraints.
AB - We examine the possibility that dark matter (DM) consists of a gapped continuum, rather than ordinary particles. A weakly interacting continuum (WIC) model, coupled to the standard model via a Z portal, provides an explicit realization of this idea. The thermal DM relic density in this model is naturally consistent with observations, providing a continuum counterpart of the "WIMP miracle."Direct detection cross sections are strongly suppressed compared to ordinary Z-portal WIMP, thanks to a unique effect of the continuum kinematics. Continuum DM states decay throughout the history of the Universe, and observations of cosmic microwave background place constraints on potential late decays. Production of WICs at colliders can provide a striking cascade-decay signature. We show that a simple Z-portal WIC model provides a fully viable DM candidate consistent with all current experimental constraints.
UR - http://www.scopus.com/inward/record.url?scp=85125633508&partnerID=8YFLogxK
U2 - 10.1103/PhysRevLett.128.081807
DO - 10.1103/PhysRevLett.128.081807
M3 - Article
C2 - 35275670
AN - SCOPUS:85125633508
SN - 0031-9007
VL - 128
JO - Physical Review Letters
JF - Physical Review Letters
IS - 8
M1 - 081807
ER -