Title: Dark matter targets for axionlike particle searches

Abstract

Many existing and proposed experiments targeting QCD axion dark matter (DM) can also search for a broad class of axionlike particles (ALPs). We assess the experimental sensitivities to electromagnetically coupled ALP DM in different cosmological scenarios with the relic abundance set by the misalignment mechanism. We obtain benchmark DM targets for the standard thermal cosmology, a pre-nucleosynthesis period of early matter domination, and a period of kination. These targets are theoretically simple and assume $$\mathcal{O}$$(1) misalignment angles, avoiding fine-tuning of the initial conditions. We find that some experiments will have sensitivity to these ALP DM targets before they are sensitive to the QCD axion, and others can possibly reach interesting targets below the QCD band. The ALP DM abundance also depends on the origin of the ALP mass. Temperature-dependent masses that are generated by strong dynamics (as for the QCD axion) correspond to DM candidates with smaller decay constants, resulting in even better detection prospects.

Authors:

Blinov, Nikita  ^[1];

• Search DOE PAGES for author "Blinov, Nikita"
• Search DOE PAGES for ORCID "0000-0002-2845-961X"
• Search orcid.org for ORCID "0000-0002-2845-961X"

Dolan, Matthew J.  ^[2];

• Search DOE PAGES for author "Dolan, Matthew J."
• Search DOE PAGES for ORCID "0000-0003-3420-8718"
• Search orcid.org for ORCID "0000-0003-3420-8718"

Draper, Patrick  ^[3];

• Search DOE PAGES for author "Draper, Patrick"
• Search DOE PAGES for ORCID "0000-0001-7240-3966"
• Search orcid.org for ORCID "0000-0001-7240-3966"

Kozaczuk, Jonathan  ^[4]

• Search DOE PAGES for author "Kozaczuk, Jonathan"
• Search DOE PAGES for ORCID "0000-0002-1801-7965"
• Search orcid.org for ORCID "0000-0002-1801-7965"

---

+ Show Author Affiliations

1. Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
2. Univ. of Melbourne (Australia)
3. Univ. of Illinois, Urbana, IL (United States)
4. Univ. of Illinois, Urbana, IL (United States); Univ. of Massachusetts, Amherst, MA (United States)

Publication Date:

2019-07-29

Research Org.:

Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)

Sponsoring Org.:

USDOE Office of Science (SC), High Energy Physics (HEP) (SC-25); Australian Research Council; National Science Foundation (NSF)

OSTI Identifier:

1545451

Alternate Identifier(s):

OSTI ID: 1545082

Report Number(s):

arXiv:1905.06952; FERMILAB-PUB-19-197-A-T
Journal ID: ISSN 2470-0010; PRVDAQ; 1735350

Grant/Contract Number:  

AC02-07CH11359; PHY-1719642

Resource Type:

Published Article

Journal Name:

Physical Review D

Additional Journal Information:

Journal Volume: 100; Journal Issue: 1; Journal ID: ISSN 2470-0010

Publisher:

American Physical Society (APS)

Country of Publication:

United States

Language:

English

Subject:

79 ASTRONOMY AND ASTROPHYSICS; 72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS