Abstract
R-parity and baryon number violating operators can be allowed in the Super-symmetric Standard Model and thus lead to interesting baryon number violating processes such as \( n-\overline{n} \) oscillations and baryogenesis of the Universe via the decay of the lightest supersymmetric particle (LSP). Adopting the LSP baryogenesis mechanism realized by the late decay of the axino, we identify a single coupling λ ′ ′313 as a common origin for the matter-antimatter asymmetry of the Universe as well as potentially observable \( n-\overline{n} \) oscillation rates. From this, rather strong constraints on the supersymmetry breaking masses and the axion decay constant are obtained. The favoured parameter space of λ ′ ′313 ∼ 0.1 and sub-TeV masses for the relevant sparticles is readily accessible by the current and future LHC searches.
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ArXiv ePrint: 1708.06439
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Calibbi, L., Chun, E.J. & Shin, C.S. LSP baryogenesis and neutron-antineutron oscillations from R-parity violation. J. High Energ. Phys. 2017, 177 (2017). https://doi.org/10.1007/JHEP10(2017)177
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DOI: https://doi.org/10.1007/JHEP10(2017)177