Pendellösung interferometry probes the neutron charge radius, lattice dynamics, and fifth forces

Abstract

Setting bounds on a fifth force Some extensions to the Standard Model of particle physics posit the existence of a fifth force to complement the existing four fundamental forces. To set bounds on the strength of such an interaction, experiments on vastly different length scales have been performed. Heacock et al . used an unusual method called Pendellösung interferometry to measure the neutron structure factors of silicon. The momentum dependence of the structure factors enabled the researchers to put more stringent bounds on the strength of a type of fifth force called the Yukawa force, as well as measure the charge radius of the neutron. —JS

Stellar cooling limits on light scalar boson revisited

“…3.3. For comparison, the excluded region is also shown from the terrestrial experiments, the meson missing decay [17] and the neutron scattering [18]. We adopt the solar interior profile employed in Ref.…”

Japan's Strategy for Future Projects in High Energy Physics

“…Neutron interaction is sensitive to exotic interactions mediated by a massive boson which couples to mass, because deviation from the gravity low is possible in the short range and the neutron is massive neutral particle. New limits of the Yukawa-type interaction in the range of nanometer were obtained by using neutron scattering [36] and interference [37].…”

The dual King relation

“…[28,21]. The orange region is excluded by the product of the individual constraints on the new boson couplings to electron [29] and neutron [30]. The red dotted line is the expected reach with Ca at a precision of 10 mHz [28].…”

“…3.2. They are weaker than the bound calculated by the product of individual constraints to the new force with electron [29] and neutron [30]. Here, we have assumed that the new force is mediated by a vector boson, and this combined bound is obtained by simply multiplying their 95% upper bounds.…”