2016/04/26 by Michael Sarrazin, Michaël Sarrazin, Guillaume Pignol +12 · 1 citation
Physics and Astronomy · #Black Holes and Theoretical Physics #Cosmology and Gravitation Theories #Neutron #Nuclear physics #Particle physics #Particle physics theoretical and experimental studies #Physics #Theoretical physics #hep-ex #hep-ph #nucl-ex
paper · pdf · doi:10.1016/j.physletb.2016.04.045
published as Phys.Lett. B758 (2016) 14-17 · 5 pages, 3 figures. Published in Physics Letters B
arxiv created 2016/04/26 · openalex publication_date 2016/04/27 · arxiv updated 2016/04/28 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
In many theoretical frameworks our visible world is a 3-brane, embedded in a multidimensional bulk, possibly coexisting with hidden braneworlds. Some works have also shown that matter swapping between braneworlds can occur. Here we report the results of an experiment – at the Institut Laue-Langevin (Grenoble, France) – designed to detect thermal neutron swapping to and from another braneworld, thus constraining the probability p2 of such an event. The limit, p<4.6×10−10 at 95% C.L., is 4 orders of magnitude better than the previous bound based on the disappearance of stored ultracold neutrons. In the simplest braneworld scenario, for two parallel Planck-scale branes separated by a distance d, we conclude that d>87 in Planck length units.