New Q-ball Solutions in Gauge-Mediation, Affleck-Dine Baryogenesis and Gravitino Dark Matter

Abstract

Affleck-Dine (AD) baryogenesis along a d=6 flat direction in gauge-mediated supersymmetry-breaking (GMSB) models can produce unstable Q-balls which naturally have field strength similar to the messenger scale. In this case a new kind of Q-ball is formed, intermediate between gravity-mediated and gauge-mediated type. We study in detail these new Q-ball solutions, showing how their properties interpolate between standard gravity-mediated and gauge-mediated Q-balls as the AD field becomes larger than the messenger scale. It is shown that E/Q for the Q-balls can be greater than the nucleon mass but less than the MSSM-LSP mass, leading to Q-ball decay directly to Standard Model fermions with no MSSM-LSP production. More significantly, if E/Q is greater than the MSSM-LSP mass, decaying Q-balls can provide a natural source of non-thermal MSSM-LSPs, which can subsequently decay to gravitino dark matter without violating nucleosynthesis constraints. The model therefore provides a minimal scenario for baryogenesis and gravitino dark matter in the gauge-mediated MSSM, requiring no new fields.

13 pages, 9 figures. Some corrections and additional discussion. Version published in JCAP

References in corpus (11)

• Big-Bang Nucleosynthesis and Gravitino
• Numerical study of Q-ball formation in gravity mediation
• Axino dark matter from Q-balls in Affleck-Dine baryogenesis and the ${\Omega }_b-{\Omega }_{DM}$ coincidence problem
• Gravitino dark matter from Q-ball decays
• Gravitino Dark Matter and general neutralino NLSP
• Leptogenesis, Gravitino Dark Matter and Entropy Production
• Gravitino dark matter and baryon asymmetry from Q-ball decay in gauge mediation
• Affleck-Dine Baryogenesis, Condensate Fragmentation and Gravitino Dark Matter in Gauge-Mediation with a Large Messenger Mass
• Affleck-Dine dynamics, Q-ball formation and thermalisation
• Gravitino Dark Matter with Weak-Scale Right-Handed Sneutrino
• On some hybrid-types of Q balls in the gauge-mediated supersymmetry breaking

Cited by in corpus (9)

• Dynamical Boson Stars
• Asymmetric Dark Matter: Theories, Signatures, and Constraints
• Revisiting the gravitino dark matter and baryon asymmetry from Q-ball decay in gauge mediation
• Baryogenesis from the Gauge-mediation type Q ball and the New type of Q ball as dark matter
• Affleck-Dine Baryogenesis and Dark Matter Production after High-scale Inflation
• A Parallel World in the Dark
• Dark Matter Gravitinos and Baryons via Q-ball decay in the Gauge-Mediated MSSM
• Q-ball dark matter and baryogenesis in high-scale inflation
• Axino dark matter and baryon number asymmetry production by the Q-ball decay in gauge mediation