Phys. Rev. C 110, 034002 (2024) – Published 6 September 2024
The nature of dark matter is one of the outstanding problems in particle physics and cosmology. To assist in the search for dark matter (DM), the authors examine the most general interactions between weakly interacting massive particles (WIMPs), assumed to be spin-1/2 fermions, and isotopes of the lightest nuclei, hydrogen and helium, using chiral effective field theory for a wide range of masses and coupling constants. The authors conclude that the scalar nuclear response functions are much greater than the others and severely constrained by the existing limits provided by experiments. The present study could be extended to other possible types of DM interactions, lighter DM candidates or heavier nuclei, such as lithium, argon, and xenon, currently widely used in dark matter detectors.
A. Pal, S. Santra, P. C. Rout, A. Kundu, D. Chattopadhyay, Ramandeep Gandhi, P. N. Patil, R. Tripathi, B. J. Roy, Y. Sawant, T. N. Nag, Abhijit Baishya, T. Santhosh, P. K. Rath, and N. Deshmukh
Phys. Rev. C 110, 034601 (2024) – Published 3 September 2024
Phys. Rev. C 110, L031301 (2024) – Published 3 September 2024
The proton dripline demarcates the nuclear landscape on the neutron-deficient side. A measurement at the SIS/FRS facility at GSI in Darmstadt, Germany of the anatomy of the immediate breakup of fragile Al into Mg + proton has now established that Al is unbound against proton emission in its ground state. The result thus places Al as the first Al isotope beyond the proton dripline. Its precise, negative proton separation energy will be a benchmark for nuclear structure models that treat nuclei as open quantum systems.
A. Sanchez, H. Iwasaki, A. Revel, B. A. Brown, J. Ash, D. Bazin, J. Chen, R. Elder, A. Gade, A. Goldkuhle, M. Grinder, D. Lempke, J. Li, B. Longfellow, C. Müller-Gatermann, J. Pereira, D. Rhodes, R. Salinas, and D. Weisshaar
Phys. Rev. C 110, 024322 (2024) – Published 28 August 2024
W.-J. Ong, H. Schatz, K. Kravvaris, S. Ahn, K. Childers, B. P. Crider, A. C. Dombos, C. Langer, R. Lewis, S. N. Liddick, S. Lyons, Z. Meisel, F. Montes, J. Pereira, D. Richman, K. Schmidt, and A. Spyrou
Phys. Rev. C 110, 024321 (2024) – Published 27 August 2024