2015/07/31 by Cristina Marcos, Miguel Peiró, Miguel Peiro +1
Physics and Astronomy · #Cosmology and Gravitation Theories #Dark Matter and Cosmic Phenomena #Dark matter #Dirac (video compression format) #Galaxy #Halo #Neutrino #Neutron #Parameter space #Particle physics #Particle physics theoretical and experimental studies #Physics #Physics beyond the Standard Model #Proton #Quantum mechanics #Space (punctuation) #Spin (aerodynamics) #Statistical physics #Statistics #Theoretical physics #Upper and lower bounds #hep-ph
paper · pdf · doi:10.1088/1475-7516/2016/03/019
published as JCAP 03 (2016) 019 · 38 pages, 10 figures, 2 appendices. Minor text corrections. References added
arxiv created 2015/09/21 · openalex publication_date 2016/03/08 · arxiv updated 2016/03/14 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/06
In this work we show how the inclusion of dark matter (DM) direct detection upper bounds in a theoretically consistent manner can affect the allowed parameter space of a DM model. Traditionally, the limits from DM direct detection experiments on the elastic scattering cross section of DM particles as a function of their mass are extracted under simplifying assumptions. Relaxing the assumptions related to the DM particle nature, such as the neutron to proton ratio of the interactions, or the possibility of having similar contributions from the spin independent (SI) and spin dependent (SD) interactions can vary significantly the upper limits. Furthermore, it is known that astrophysical and nuclear uncertainties can also affect the upper bounds. To exemplify the impact of properly including all these factors, we have analysed two well motivated and popular DM scenarios: neutralinos in the NMSSM and a Z ' portal with Dirac DM. We have found that the allowed parameter space of these models is subject to important variations when one includes both the SI and SD interactions at the same time, realistic neutron to proton ratios, as well as using different self-consistent speed distributions corresponding to popular DM halo density profiles, and distinct SD structure functions. Finally, we provide all the necessary information to include the upper bounds of SuperCDMS and LUX taking into account all these subtleties in the investigation of any particle physics model. The data for each experiment and example codes are available at this site http://goo.gl/1CDFYi , and their use is detailed in the appendices of this work.