No signal found in first search for eta to pi0 plus invisible dark scalar decay, setting branching fraction limits of (1.8-5.5)x10^-5 at 90% CL and improving DM-nucleon cross section bounds by ~5 orders of magnitude.
Ning et al., Search for Light Dark Matter from the Atmosphere in PandaX-4T, Phys
2 Pith papers cite this work. Polarity classification is still indexing.
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Finite size of puffy dark matter is identified as a fundamental factor affecting Sommerfeld enhancement, characterized via two dimensionless parameters, with nugget-type DM showing resonant behavior akin to point-like particles.
citing papers explorer
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Search for sub-GeV dark particles in $\eta\to\pi^0+\rm{invisible}$ decay
No signal found in first search for eta to pi0 plus invisible dark scalar decay, setting branching fraction limits of (1.8-5.5)x10^-5 at 90% CL and improving DM-nucleon cross section bounds by ~5 orders of magnitude.
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Size Dependence of the Sommerfeld Enhancement for Puffy Dark Matter
Finite size of puffy dark matter is identified as a fundamental factor affecting Sommerfeld enhancement, characterized via two dimensionless parameters, with nugget-type DM showing resonant behavior akin to point-like particles.