Closing the window on ∼GeV Dark Matter with moderate (∼μb) interaction with nucleons

Mahdawi, M. Shafi; Farrar, Glennys R.

doi:10.1088/1475-7516/2017/12/004

Cited by 46 publications

(104 citation statements)

References 21 publications

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“…The case where the dark particle is stable and identified as dark matter has been treated in a dedicated companion paper, Ref. [6], where a complementarity with low-mass direct detection bounds (like XQC [9][10][11]) has been found. Searches for dark sectors via loops of virtual dark particles include Refs.…”

Section: Introductionmentioning

confidence: 99%

Bounding quantum dark forces

2018

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Dark sectors lying beyond the Standard Model and containing sub-GeV particles which are bilinearly coupled to nucleons would induce quantum forces of the Casimir-Polder type in ordinary matter. Such new forces can be tested by a variety of experiments over many orders of magnitude. We provide a generic interpretation of these experimental searches and apply it to a sample of forces from dark scalars behaving as 1=r 3 , 1=r 5 , 1=r 7 at short range. The landscape of constraints on such quantum forces differs from the one of modified gravity with Yukawa interactions and features, in particular, strong short-distance bounds from molecular spectroscopy and neutron scattering.

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Section: Introductionmentioning

confidence: 99%

Bounding quantum dark forces

2018

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“…The most sensitive underground experiment for cross-sections in this range is DAMIC [16] operating 107 m below the surface. At this depth, scattering in the Earth's crust and the detector shielding reduces the flux of detectable DM particles reaching the DAMIC detector by more than a factor ∼ 10 8 for a ∼ GeV DM particle with σ χN ≥ 0.7 × 10 −29 cm 2 [17]. (Note that the previous analysis of DAMIC by [18] overestimated the attenuation by more than a factor of 10 4 and thus underestimated the sensitivity range of DAMIC [17].…”

Section: Dark Matter Detectionmentioning

confidence: 94%

“…Successively more detailed limits using XQC data have been provided by [20,15,21,17]. As shown in [17], the correct limit on the cross section from XQC, assuming the standard DM velocity distribution and taking the XQC sensitivity at face value, is σ χ p ≤ 0.6 × 10 −30 cm 2 . This is a factor 9 more stringent than found in [21], due to [21] mistakenly assuming the rocket body shielded the detector.…”

Section: Dark Matter Detectionmentioning

confidence: 99%

“…This is a factor 9 more stringent than found in [21], due to [21] mistakenly assuming the rocket body shielded the detector. With the poor approximations in [18] and [21] corrected, the window that previously existed for DM to have ∼ µb cross section with nucleons, is closed [17], with the above-mentioned caveats. The window was in any case at too-low cross section values to be relevant for the S, for which we expect σ SN ≥ 5 mb.…”

Section: Dark Matter Detectionmentioning

confidence: 99%

“…A typical assumption for the DM velocity distribution in the Galactic rest frame, is an isotropic Maxwellian with peak at 220 km/s and cutoff at the escape velocity 584 km/s [21,17], resulting in a DM velocity distribution with respect to the Earth which peaks at v p ≈300 km/s. For low DM mass, the limit is very sensitive to v p .…”

Section: Dark Matter Detectionmentioning

confidence: 99%

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6-quark Dark Matter: viable + explains many observations

Farrar¹

2017

Proceedings of 35th International Cosmic Ray Conference — PoS(ICRC2017)

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It has recently been proposed that the relatively inert, highly symmetric, neutral flavor singlet scalar hadron made of uuddss quarks may have a mass < 2(m p + m e ). This is consistent with QCD theory, and with existing accelerator and non-accelerator constraints. For mass in the 1.5-1.8 GeV range, the observed DM relic abundance and the observed DM to ordinary matter ratio can emerge naturally. Dark matter freezes out before primordial nucleosynthesis and does not significantly impact primordial abundances, so the conventional argument that DM is non-baryonic does not apply. The interaction cross section between DM and the gas in the Galaxy is such that the dark matter in our local neighborhood is naturally co-rotating with the solar system, to a sufficient degree that DM may not have enough energy to be detected in applicable DM experiments. Interaction with the gas in galactic disks provides the first (non-MONDian) explanation for the striking correlation in the small-scale structure of rotation curves and the inhomogeneous distribution of gas, and also accounts (unlike MOND) for instances of galaxies not exhibiting such correlations. Depending on the cross-section, a DM-baryon interaction can produce a dark matter disk as suggested by recent studies, and has many or all virtues of self-interacting DM (SIDM) for removing inconsistencies of LCDM. Lab experiments to discover this particle are discussed.

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Boosted dark matter from Centaurus A and its detection

Xia,

Xing,

2024

J. High Energ. Phys.

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Dark matter can be boosted by high energy particles in astrophysical environments through elastic scattering. We study the production of boosted dark matter via scattering with electrons in the relativistic jet of the closest active galactic nucleus, Centaurus A, and its detection in the Super-Kamiokande experiment. Since there are a huge number of electrons in the jet and dark matter is extremely dense around the supermassive black hole that powers the jet, the number of boosted dark matter is tremendously large. Compared to boosted dark matter from blazars, the dark matter flux from Centaurus A is enhanced due to the proximity of Centaurus A. The constraint on dark matter-electron scattering cross section set by Super-Kamiokande is more stringent, down to ∼ 10−36 cm2 for MeV dark matter.

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Closing the window on ∼GeV Dark Matter with moderate (∼μb) interaction with nucleons

Cited by 46 publications

References 21 publications

Bounding quantum dark forces

Bounding quantum dark forces

6-quark Dark Matter: viable + explains many observations

Boosted dark matter from Centaurus A and its detection

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