Dark quark nuggets
Abstract
“Dark quark nuggets,” a lump of dark quark matter, can be produced in the early universe for a wide range of confining gauge theories and serve as a macroscopic dark matter candidate. The two necessary conditions, a nonzero dark baryon number asymmetry and a first-order phase transition, can easily be satisfied for many asymmetric dark matter models and QCD-like gauge theories with a few massless flavors. For confinement scales from 10 keV to 100 TeV, these dark quark nuggets with a huge dark baryon number have their masses vary from 1023 g to 10–7 g and their radii from 108 cm to 10–15 cm. Such macroscopic dark matter candidates can be searched for by a broad scope of experiments and even new detection strategies. Specifically, we have found that the gravitational microlensing experiments can probe heavier dark quark nuggets or smaller confinement scales around 10 keV; collision of dark quark nuggets can generate detectable and transient electromagnetic radiation signals; the stochastic gravitational wave signals from the first-order phase transition can be probed by the pulsar timing array observations and other space-based interferometry experiments; the approximately massless dark mesons can behave as dark radiation to be tested by the next-generation cosmic microwave background experiments;more »
- Authors:
- Publication Date:
- Research Org.:
- Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States); Univ. of Michigan, Ann Arbor, MI (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), High Energy Physics (HEP)
- OSTI Identifier:
- 1503927
- Alternate Identifier(s):
- OSTI ID: 1488602; OSTI ID: 1646645
- Report Number(s):
- arXiv:1810.04360; FERMILAB-PUB-18-600-T
Journal ID: ISSN 2470-0010; PRVDAQ; 055047
- Grant/Contract Number:
- SC0017647; SC0007859; AC02-07CH11359
- Resource Type:
- Published Article
- Journal Name:
- Physical Review D
- Additional Journal Information:
- Journal Name: Physical Review D Journal Volume: 99 Journal Issue: 5; 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; Cosmology; Phase separation; Strong interaction
Citation Formats
Bai, Yang, Long, Andrew J., and Lu, Sida. Dark quark nuggets. United States: N. p., 2019.
Web. doi:10.1103/PhysRevD.99.055047.
Bai, Yang, Long, Andrew J., & Lu, Sida. Dark quark nuggets. United States. https://doi.org/10.1103/PhysRevD.99.055047
Bai, Yang, Long, Andrew J., and Lu, Sida. Fri .
"Dark quark nuggets". United States. https://doi.org/10.1103/PhysRevD.99.055047.
@article{osti_1503927,
title = {Dark quark nuggets},
author = {Bai, Yang and Long, Andrew J. and Lu, Sida},
abstractNote = {“Dark quark nuggets,” a lump of dark quark matter, can be produced in the early universe for a wide range of confining gauge theories and serve as a macroscopic dark matter candidate. The two necessary conditions, a nonzero dark baryon number asymmetry and a first-order phase transition, can easily be satisfied for many asymmetric dark matter models and QCD-like gauge theories with a few massless flavors. For confinement scales from 10 keV to 100 TeV, these dark quark nuggets with a huge dark baryon number have their masses vary from 1023 g to 10–7 g and their radii from 108 cm to 10–15 cm. Such macroscopic dark matter candidates can be searched for by a broad scope of experiments and even new detection strategies. Specifically, we have found that the gravitational microlensing experiments can probe heavier dark quark nuggets or smaller confinement scales around 10 keV; collision of dark quark nuggets can generate detectable and transient electromagnetic radiation signals; the stochastic gravitational wave signals from the first-order phase transition can be probed by the pulsar timing array observations and other space-based interferometry experiments; the approximately massless dark mesons can behave as dark radiation to be tested by the next-generation cosmic microwave background experiments; the free dark baryons, as a subcomponent of dark matter, can have direct detection signals for a sufficiently strong interaction strength with the visible sector.},
doi = {10.1103/PhysRevD.99.055047},
journal = {Physical Review D},
number = 5,
volume = 99,
place = {United States},
year = {2019},
month = {3}
}
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Works referencing / citing this record:
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