S, T, U parameters are redefined for the B-LSSM using pinch technique contributions to gauge boson self-energies and expressed as functions of B-LSSM parameters, with experimental constraints applied.
Dark Matter in B-L Extended MSSM Models
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abstract
We analyze the dark matter problem in the context of supersymmetric U(1)_{B-L} model. In this model, the lightest neutalino can be the B-L gaugino widetilde {Z}_{B-L} or the extra Higgsinos widetilde{chi}_{1,2} dominated. We compute the thermal relic abundance of these particles and show that, unlike the LSP in MSSM, they can account for the observed relic abundance with no conflict with other phenomenological constraints. The prospects for their direct detection, if they are part of our galactic halo, are also discussed.
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$S, T, U$ Parameters in The B-LSSM
S, T, U parameters are redefined for the B-LSSM using pinch technique contributions to gauge boson self-energies and expressed as functions of B-LSSM parameters, with experimental constraints applied.