2019/03/31 by Kirtimaan A. Mohan, Dipan Sengupta, Tim M. P Tait +3
Computer Science · Physics and Astronomy · #Computational Physics and Python Applications #Dark Matter and Cosmic Phenomena #Dark matter #Fermion #Large Hadron Collider #MAJORANA #Majorana fermion #Missing energy #Particle physics theoretical and experimental studies #Perturbation theory (quantum mechanics) #Quark #Scalar (mathematics) #hep-ex #hep-ph
paper · pdf · doi:10.1007/jhep05(2019)115
37 pages,14 figures. Erratum in earlier version of plots fixed
openalex created_date 2019/03/22 · openalex publication_date 2019/05/01 · arxiv created 2022/03/18 · arxiv updated 2022/03/21 · openalex updated_date 2026/08/06
An interesting class of models posits that the dark matter is a Majorana fermion which interacts with a quark together with a colored scalar mediator. Such a theory can be tested in direct detection experiments, through dark matter scattering with heavy nuclei, and at the LHC, via jets and missing energy signatures. Motivated by the fact that such theories have spin-independent interactions that vanish at tree level, we examine them at one loop (along with RGE improvement to resum large logs), and find that despite its occurrence at a higher order of perturbation theory, the spin-independent scattering searches typically impose the strongest constraints on the model parameter space. We further analyze the corresponding LHC constraints at one loop and find that it is important to take them into account when interpreting the implications of searches for jets plus missing momentum on this class of models, thus providing the corresponding complementary information for this class of models.