Tuesday, May 21, 2013

1305.4322 (Ki-Young Choi et al.)

Light Dirac right-handed sneutrino dark matter    [PDF]

Ki-Young Choi, Osamu Seto
We show that mostly right-handed Dirac sneutrino is a viable supersymmetric light dark matter candidate. While the Dirac sneutrino scattering with nuclei is dominantly through the $Z$ boson exchange and is stringently constrained by the invisible decay width of $Z$ boson, it is possible to realize a large enough cross section with nucleon to account for possible signals observed at direct dark matter searches such as CDMS II-Si or CoGeNT. Even if the XENON100 limit is taken into account, a small part of signal region for CDMS II-Si events remains outside the excluded region by XENON100.
View original: http://arxiv.org/abs/1305.4322

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