Stealth dark matter spectrum using Laplacian Heaviside smearing and irreducible representations
We present nonperturbative lattice calculations in the quenched approximation of the low-lying meson and baryon spectrum of the SU(4) gauge theory with fundamental fermion constituents. This theory is one instance of stealth dark matter, a class of strongly coupled theories, where the lowest mass stable baryon is the dark matter candidate. This work constitutes the first milestone in the program to study stealth dark matter self-interactions. Here, we focus on reducing excited state contamination in the single-baryon channel by applying the Laplacian Heaviside method, as well as projecting our baryon operators onto the irreducible representations of the octahedral group. We compare our resulting spectrum to previous work involving Gaussian smeared nonprojected operators and find good agreement with reduced statistical uncertainties. We also present the spectrum of the low-lying odd-parity baryons for the first time. Published by the American Physical Society 2024
Authors
- Graham D. Kribs (ORCID: https://orcid.org/0000-0003-4812-4419)
- Anna Hasenfratz A (ORCID: https://orcid.org/0000-0003-1813-2645)
- Pavlos Vranas (ORCID: https://orcid.org/0000-0002-8497-6283)
- Evan K. Owen (ORCID: https://orcid.org/0000-0003-4200-9778)
- C. Rebbi (ORCID: https://orcid.org/0000-0002-0145-9329)
- Aaron S. Meyer (ORCID: https://orcid.org/0000-0001-7937-8505)
- Xiao-Yong Jin (ORCID: https://orcid.org/0000-0002-2346-6861)
- James Ingoldby (ORCID: https://orcid.org/0000-0002-4690-3163)
- David Schaich (ORCID: https://orcid.org/0000-0002-9826-2951)
- S. Park
- Oliver Witzel (ORCID: https://orcid.org/0000-0003-2627-3763)
- R. C. Brower
- Ethan T. Neil (ORCID: https://orcid.org/0000-0002-4915-3951)
- George Fleming (ORCID: https://orcid.org/0000-0002-4987-7167)
- Enrico Rinaldi (ORCID: https://orcid.org/0000-0003-4134-809X)
- Dean Howarth (ORCID: https://orcid.org/0000-0002-9834-712X)
- K. K. Cushman (ORCID: https://orcid.org/0000-0002-5850-2607)
- E. Weinberg
- James C. Osborn
- Chris Culver
Institutions
- Boston University (US)
- The Abdus Salam International Centre for Theoretical Physics (ICTP) (IT)
- Argonne National Laboratory (US)
- Lawrence Livermore National Laboratory (US)
- Fermi National Accelerator Laboratory (US)
- University of Liverpool (GB)
- Lawrence Berkeley National Laboratory (US)
- University of Oregon (US)
- University of Colorado Boulder (US)
- Durham University (GB)
- University of Siegen (DE)
- Folkwang University of the Arts (DE)
- University of Colorado System (US)
- Yale University (US)
- RIKEN (JP)
- Nvidia (United States) (US)
- Naval Research Laboratory Information Technology Division
Publication Details
- Journal
- Physical review. D/Physical review. D.
- Published
- 2024-11-05
- DOI
- https://doi.org/10.1103/physrevd.110.095001
- Citations
- 3
- Primary Topic
- Dark Matter and Cosmic Phenomena
- Type
- article
- Field-Weighted Citation Impact
- 1.98
Funders
- National Science Foundation
- U.S. Department of Energy
- Nvidia
- Boston University
- UK Research and Innovation
- Massachusetts Green High Performance Computing Center
- Schweizerischer Nationalfonds zur Förderung der Wissenschaftlichen Forschung
- Office of Science
- Science and Technology Facilities Council
- European Research Council
- Argonne National Laboratory
- Lawrence Livermore National Laboratory
- Oak Ridge National Laboratory