Direct detection and LHC constraints on a t-channel simplified model of Majorana dark matter at one loop

Journal of High Energy Physics

Tim M. P Tait¹  Bin Yan²  Kirtimaan A. Mohan²  C.-P. Yuan²  Dipan Sengupta³ 

[1] 0000 0001 0668 7243, grid.266093.8, Department of Physics and Astronomy, University of California, Irvine, 92697-4575, Irvine, CA, USA;0000 0001 2150 1785, grid.17088.36, Department of Physics and Astronomy, Michigan State University, 567 Wilson Road, East Lansing, MI, USA;0000 0001 2150 1785, grid.17088.36, Department of Physics and Astronomy, Michigan State University, 567 Wilson Road, East Lansing, MI, USA;0000 0001 2107 4242, grid.266100.3, Department of Physics and Astronomy, University of California, San Diego, 9500 Gilman Drive, La Jolla, CA, USA;

关键词: Beyond Standard Model;    Cosmology of Theories beyond the SM;    Renormalization Group;   

DOI  :  10.1007/JHEP05(2019)115

来源: publisher

【 摘 要 】

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.

【 授权许可】

Unknown