Direct search of dark matter in high-scale supersymmetry

Creators: Hisano, Junji; Ishiwata, Koji; Nagata, Natsumi

Abstract

We study direct detection of dark matter in a supersymmetric model where most supersymmetric particles have very high-scale masses beyond the weak scale. In the scenario, a Wino-like or a Higgsino-like neutralino is a good candidate for the dark matter in the Universe. The neutralino scatters off nuclei by a Higgs boson exchange diagram and also electroweak loop diagrams. It is found that the elastic-scattering cross section with nuclei is enhanced or suppressed due to constructive or deconstructive interference among the diagrams. Such a cross section is within the reach of future experiment in some parameter region.

Additional Information

© 2013 American Physical Society. Received 29 October 2012; published 15 February 2013. We would like to thank Tomohiro Takesako for collaboration and discussion in the early stages of this work. We are also grateful to Satoshi Shirai for useful comments. This work is supported by a Grant-in-Aid for Scientific Research from the Ministry of Education, Science, Sports, and Culture (MEXT), Japan, No. 20244037, No. 20540252, No. 22244021, and No. 23104011 (J. H.), and also by World Premier International Research Center Initiative (WPI Initiative), MEXT, Japan. This work was also supported in part by the U.S. Department of Energy under Contract No. DE-FG02-92ER40701, and by the Gordon and Betty Moore Foundation (K. I.). The work of N. N. is supported by Research Fellowships of the Japan Society for the Promotion of Science for Young Scientists.

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Published - PhysRevD.87.035020.pdf

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