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Dark Matter as Screened Ordinary Matter

Colin D. Froggatt, Holger Bech Nielsen

TL;DR

This work defends a dark matter paradigm in which DM consists of bubbles of a new vacuum containing densely packed ordinary matter, producing strong internal screening that renders DM effectively invisible to ordinary matter. A central technical contribution is framing the non-gravitational interactions in terms of an interference-corrected sigma/m, distinguishing how DM–DM and DM–OM collisions scale and how these connect to signals such as the 3.5 keV line and the DAMA modulation. By integrating Correa’s dwarf-galaxy self-interaction data and Cline–Frey’s 3.5 keV analysis, the authors extract consistent cross-section magnitudes and argue that the observed phenomena can be understood if the DM pearls host a large number (n) of screened nuclei, with elastic DM–DM scattering enhanced by interference while DM–OM channels are governed by end-of-track physics and threshold effects. The paper then develops predictions for depth- and latitude-dependent underground signals, proposes a stopping-length scenario for DAMA, and outlines a coherent, testable framework that contrasts with standard WIMP models, while offering concrete unit-conversion scaffolding and sky-region tests for verification.

Abstract

We look at our since long studied model for dark matter as being pearls of a speculated new vacuum containing highly compressed ordinary matter, with so much ordinary in it that the content of ordinary matter in the dark matter pearls dominate. Most dark matter models have the dark matter consisting mainly of new-physics-matter such as WIMPs being supersymmetric partners of possibly known particles or, as in Maxim Khlopovs model, a doubly negatively charged new-physics-particle with a helium nucleus attached. But usually the new-physics matter makes up weight-wise the major content. It is only in our model that the ordinary matter content in the dark matter dominates. We here expose some weak phenomenological evidence that, in truth, dark matter should be of the type with a dominant component of ordinary matter (weight-wise), thus favoring as the typical example our previously so much studied vacuum type 2 model. The main such evidence is that we manage a fit to data in which the 3.5 keV X-rays, presumed to result from dark matter, come both from collisions of dark matter with dark matter and from dark matter with ordinary matter! Both mechanisms are of so similar an order of magnitude that they are both seen, indicating that their similarity is due to a significant similarity between dark with ordinary matter. The fact that the amounts of ordinary and dark matter only deviate by a factor 6 points in the same direction. Using the information obtained from this fitting, we develop our speculation that the main content weight-wise of dark matter is ordinary matter to the very DAMA experiment. Actually we found three spots on the sky in which we fit the observed production of 3.5 keV X-rays with ordinary plus dark scattering.

Dark Matter as Screened Ordinary Matter

TL;DR

This work defends a dark matter paradigm in which DM consists of bubbles of a new vacuum containing densely packed ordinary matter, producing strong internal screening that renders DM effectively invisible to ordinary matter. A central technical contribution is framing the non-gravitational interactions in terms of an interference-corrected sigma/m, distinguishing how DM–DM and DM–OM collisions scale and how these connect to signals such as the 3.5 keV line and the DAMA modulation. By integrating Correa’s dwarf-galaxy self-interaction data and Cline–Frey’s 3.5 keV analysis, the authors extract consistent cross-section magnitudes and argue that the observed phenomena can be understood if the DM pearls host a large number (n) of screened nuclei, with elastic DM–DM scattering enhanced by interference while DM–OM channels are governed by end-of-track physics and threshold effects. The paper then develops predictions for depth- and latitude-dependent underground signals, proposes a stopping-length scenario for DAMA, and outlines a coherent, testable framework that contrasts with standard WIMP models, while offering concrete unit-conversion scaffolding and sky-region tests for verification.

Abstract

We look at our since long studied model for dark matter as being pearls of a speculated new vacuum containing highly compressed ordinary matter, with so much ordinary in it that the content of ordinary matter in the dark matter pearls dominate. Most dark matter models have the dark matter consisting mainly of new-physics-matter such as WIMPs being supersymmetric partners of possibly known particles or, as in Maxim Khlopovs model, a doubly negatively charged new-physics-particle with a helium nucleus attached. But usually the new-physics matter makes up weight-wise the major content. It is only in our model that the ordinary matter content in the dark matter dominates. We here expose some weak phenomenological evidence that, in truth, dark matter should be of the type with a dominant component of ordinary matter (weight-wise), thus favoring as the typical example our previously so much studied vacuum type 2 model. The main such evidence is that we manage a fit to data in which the 3.5 keV X-rays, presumed to result from dark matter, come both from collisions of dark matter with dark matter and from dark matter with ordinary matter! Both mechanisms are of so similar an order of magnitude that they are both seen, indicating that their similarity is due to a significant similarity between dark with ordinary matter. The fact that the amounts of ordinary and dark matter only deviate by a factor 6 points in the same direction. Using the information obtained from this fitting, we develop our speculation that the main content weight-wise of dark matter is ordinary matter to the very DAMA experiment. Actually we found three spots on the sky in which we fit the observed production of 3.5 keV X-rays with ordinary plus dark scattering.
Paper Structure (19 sections, 40 equations)