Supersymmetric Q-balls: A Numerical Study

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dc.creatorCampanelli, L.
dc.creatorRuggieri, M.
dc.date2007-12-21
dc.date.accessioned2026-07-07T11:13:53Z
dc.date.available2026-07-07T11:13:53Z
dc.descriptionWe study numerically a class of non-topological solitons, the Q-balls, arising in supersymmetric extension of the Standard Model with low-energy, gauge-mediated symmetry breaking. % Taking into account the exact form of the supersymmetric potential giving rise to Q-balls, we find that there is a lower limit on the value of the charge $Q$ in order to make them classically stable: $Q \gtrsim 5 \times 10^2 Q_{\rm cr}$, where $Q_{\rm cr}$ is constant depending on the parameters defining the potential and can be in the range $1 \lesssim Q_{\rm cr} \lesssim 10^{8 ÷16}$.If $Q$ is the baryon number, stability with respect to the decay into protons requires $Q \gtrsim 10^{17} Q_{\rm cr}$, while if the gravitino mass is greater then $m_{3/2} \gtrsim 61 \MeV$, no stable gauge-mediation supersymmetric Q-balls exist. Finally, we find that energy and radius of Q-balls can be parameterized as $E \sim ξ_E Q^{3/4}$ and $R \sim ξ_R Q^{1/4}$, where $ξ_E$ and $ξ_R$ are slowly varying functions of the charge.
dc.description6 pages, 2 columns, 6 figures. To appear on Phys. Rev. D
dc.identifierhttps://arxiv.org/abs/0712.3669
dc.identifierhttp://arxiv.org/abs/0712.3669
dc.identifierPhys.Rev.D77:043504,2008
dc.identifierdoi:10.1103/PhysRevD.77.043504
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/191876
dc.subjectHigh Energy Physics - Theory
dc.subjectHigh Energy Physics - Phenomenology
dc.titleSupersymmetric Q-balls: A Numerical Study
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