Strong Interactive Massive Particles from a Strong Coupled Theory

Abstract

Minimal walking technicolor models can provide a nontrivial solution for cosmological dark matter, if the lightest technibaryon is doubly charged. Technibaryon asymmetry generated in the early Universe is related to baryon asymmetry and it is possible to create excess of techniparticles with charge (-2). These excessive techniparticles are all captured by ${}^{4}He$, creating \emph{techni-O-helium} $tOHe$ ``atoms'', as soon as ${}^{4}He$ is formed in Big Bang Nucleosynthesis. The interaction of techni-O-helium with nuclei opens new paths to the creation of heavy nuclei in Big Bang Nucleosynthesis. Due to the large mass of technibaryons, the $tOHe$ ``atomic'' gas decouples from the baryonic matter and plays the role of dark matter in large scale structure formation, while structures in small scales are suppressed. Nuclear interactions with matter slow down cosmic techni-O-helium in Earth below the threshold of underground dark matter detectors, thus escaping severe CDMS constraints. On the other hand, these nuclear interactions are not sufficiently strong to exclude this form of Strongly Interactive Massive Particles by constraints from the XQC experiment. Experimental tests of this hypothesis are possible in search for $tOHe$ in balloon-borne experiments (or on the ground) and for its charged techniparticle constituents in cosmic rays and accelerators. The $tOHe$ ``atoms'' can cause cold nuclear transformations in matter and might form anomalous isotopes, offering possible ways to exclude (or prove?) their existence.

41 pages, 4 figures

References in corpus (7)

• WIMP Annihilation and Cooling of Neutron Stars
• Minimal Walking Technicolor: Set Up for Collider Physics
• Towards Closing the Window on Strongly Interacting Dark Matter: Far-Reaching Constraints from Earth's Heat Flow
• Stau-catalyzed ${}^6$Li Production in Big-Bang Nucleosynthesis
• Big-Bang Nucleosynthesis with Long-Lived Charged Slepton
• Dark Majorana Particles from the Minimal Walking Technicolor
• Uranus's anomalously low excess heat constrains strongly interacting dark matter

Cited by in corpus (7)

• Composite dark matter from a model with composite Higgs boson
• The Electroweak Phase Transition in Nearly Conformal Technicolor
• Flaxino dark matter and stau decay
• Stable quarks of the 4th family?
• Dark matter from stable charged particles?
• Minimal Walking Technicolor
• Primordial heavy elements in composite dark matter models