Q-ball collisions in the MSSM: gauge-mediated supersymmetry breaking

Physics – High Energy Physics – High Energy Physics - Phenomenology

Scientific paper

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9 pages, 3 figures

Scientific paper

10.1016/S0370-2693(00)00679-1

Collisions of non-topological solitons, Q-balls, are considered in the Minimal Supersymmetric Standard Model where supersymmetry has been broken at a low energy scale via a gauge mediated mechanism. Q-ball collisions are studied numerically on a two dimensional lattice for a range of Q-ball charges. Total cross-sections, as well as fusion and geometrical cross-sections are calculated. The total and geometrical cross-sections appear to converge with increasing charge. The fusion cross-section has been estimated to be larger than 60% of the geometrical cross-section for large balls.

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