String scale interacting dark matter from ${\pi }_1$

Abstract

We show that in a wide class of string derived models of particle physics, heavy string modes with masses around the GUT scale can serve as a viable dark matter candidate. These heavy string modes wind around specific cycles in the extra-dimensional space, closely related to the fundamental group ${\pi }_1$. As a consequence of a non-trivial ${\pi }_1$, there is an exact discrete symmetry that stabilizes such winding strings. The dark matter candidate couples to the Standard Model via gravity and via the exchange of heavy string states. We find that, for reasonable values of the string coupling, our dark matter candidate can be produced in sizable amounts via freeze-in. Our scheme applies to many string constructions, including Calabi-Yau compactifications, and can be tested against constraints from the CMB.

13 pages, 9 figures; v2: published version with references added and extended discussion of string setup

References in corpus (23)

• Supersymmetric Dark Matter
• Freeze-In Production of FIMP Dark Matter
• Neutralino Relic Density including Coannihilations
• Instant Preheating
• On the gravitational production of superheavy dark matter
• Planckian Interacting Massive Particles as Dark Matter
• The Exact MSSM Spectrum from String Theory
• Discrete R symmetries for the MSSM and its singlet extensions
• Robust forecasts on fundamental physics from the foreground-obscured, gravitationally-lensed CMB polarization
• Theory and Phenomenology of Planckian Interacting Massive Particles as Dark Matter
• A Z2xZ2 standard model
• On orbifolds and free fermion constructions
• Freezing-in dark matter through a heavy invisible $Z^{\prime }$
• String Theory and the Dark Glueball Problem
• Classification of symmetric toroidal orbifolds
• Moduli Portal Dark Matter
• Gauge Origin of Discrete Flavor Symmetries in Heterotic Orbifolds
• Charting the flavor landscape of MSSM-like Abelian heterotic orbifolds
• T-duality orbifolds of heterotic Narain compactifications
• Non-Factorisable Z2 times Z2 Heterotic Orbifold Models and Yukawa Couplings
• Hypercharge Flux in Heterotic Compactifications
• Dark Glueballs and their Ultralight Axions
• Note on the space group selection rule for closed strings on orbifolds

Cited by in corpus (1)

• Predicting the orbifold origin of the MSSM