2013/03/18 by J. I. Collar · 2 citations
Physics and Astronomy · #Atomic and Subatomic Physics Research #Dark Matter and Cosmic Phenomena #Particle physics theoretical and experimental studies #astro-ph.CO #astro-ph.IM #hep-ph #nucl-ex #physics.ins-det
paper · pdf · doi:10.1103/physrevlett.110.211101
published as Phys. Rev. Lett. 110 (2013) 211101 · 3 pages, 4 figures; v2: expanded version. Includes new figure with displaced DAMA/LIBRA ROI obtained using the quenching factors measured
arxiv created 2013/03/18 · openalex publication_date 2013/05/23 · arxiv updated 2013/05/28 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/31
The low-energy monochromatic neutron emission from an (88)Y/Be source can be exploited to mimic the few keV(nr) nuclear recoils expected from low-mass weakly interacting massive particles and coherent scattering of neutrinos off nuclei. Using this source, a </~10% quenching factor is measured for sodium recoils below 24 keV(nr) in NaI[Tl]. This is considerably smaller than the 30% typically adopted in the interpretation of the DAMA/LIBRA dark matter experiment, resulting in a marked increase of its tension with other searches, under the standard set of phenomenological assumptions. The method is illustrated for other target materials (superheated and noble liquids).