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Dark matter gravitinos and baryons via Q-ball decay in the gauge-mediated MSSM

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Dark matter gravitinos and baryons via Q-ball decay in the gauge-mediated MSSM. / Doddato, Francesca; McDonald, John.

In: Journal of Cosmology and Astroparticle Physics, Vol. 2013, No. 7, 004, 03.07.2013.

Research output: Contribution to journalJournal article

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Doddato, F & McDonald, J 2013, 'Dark matter gravitinos and baryons via Q-ball decay in the gauge-mediated MSSM', Journal of Cosmology and Astroparticle Physics, vol. 2013, no. 7, 004. https://doi.org/10.1088/1475-7516/2013/07/004

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Doddato, Francesca ; McDonald, John. / Dark matter gravitinos and baryons via Q-ball decay in the gauge-mediated MSSM. In: Journal of Cosmology and Astroparticle Physics. 2013 ; Vol. 2013, No. 7.

Bibtex

@article{57c24b43f92a4c848fc7366f50eea526,
title = "Dark matter gravitinos and baryons via Q-ball decay in the gauge-mediated MSSM",
abstract = "We show that late Q-ball decay in the MSSM with gauge-mediated SUSY breaking can provide a natural source of non-thermal NLSPs which subsequently decay to gravitino dark matter without violating nucleosynthesis constraints. To show this, we perform a global analysis of Q-ball formation and decay in Affleck-Dine baryogenesis for a d = 6 (u(c)d(c)d(c))(2) flat direction of the gauge-mediated MSSM. A general phenomenological potential for the flat-direction is studied and the Q-ball decay properties are obtained as a function of its parameters. The corresponding gravitino mass necessary to account for dark matter is then determined for the case of stau NLSPs. The decay temperature depends on the charge of the Q-balls, which is determined by the fragmentation of the AD condensate. Different fragmentation scenarios are considered, and the final non-thermal NLSP density from Q-ball decay and NLSP annihilation is determined. Particular care is taken to establish that NLSPs from Q-ball decay become homogeneous and non-relativistic prior to annihilation. The gravitino mass necessary for dark matter is naturally consistent with the theoretical gravitino mass in the gauge-mediation model.",
keywords = "dark matter theory, baryon asymmetry, supersymmetry and cosmology, cosmology of theories beyond the SM, SUPERSYMMETRY BREAKING, BARYOGENESIS, CONDENSATE, MODELS",
author = "Francesca Doddato and John McDonald",
year = "2013",
month = jul
day = "3",
doi = "10.1088/1475-7516/2013/07/004",
language = "English",
volume = "2013",
journal = "Journal of Cosmology and Astroparticle Physics",
issn = "1475-7516",
publisher = "IOP Publishing",
number = "7",

}

RIS

TY - JOUR

T1 - Dark matter gravitinos and baryons via Q-ball decay in the gauge-mediated MSSM

AU - Doddato, Francesca

AU - McDonald, John

PY - 2013/7/3

Y1 - 2013/7/3

N2 - We show that late Q-ball decay in the MSSM with gauge-mediated SUSY breaking can provide a natural source of non-thermal NLSPs which subsequently decay to gravitino dark matter without violating nucleosynthesis constraints. To show this, we perform a global analysis of Q-ball formation and decay in Affleck-Dine baryogenesis for a d = 6 (u(c)d(c)d(c))(2) flat direction of the gauge-mediated MSSM. A general phenomenological potential for the flat-direction is studied and the Q-ball decay properties are obtained as a function of its parameters. The corresponding gravitino mass necessary to account for dark matter is then determined for the case of stau NLSPs. The decay temperature depends on the charge of the Q-balls, which is determined by the fragmentation of the AD condensate. Different fragmentation scenarios are considered, and the final non-thermal NLSP density from Q-ball decay and NLSP annihilation is determined. Particular care is taken to establish that NLSPs from Q-ball decay become homogeneous and non-relativistic prior to annihilation. The gravitino mass necessary for dark matter is naturally consistent with the theoretical gravitino mass in the gauge-mediation model.

AB - We show that late Q-ball decay in the MSSM with gauge-mediated SUSY breaking can provide a natural source of non-thermal NLSPs which subsequently decay to gravitino dark matter without violating nucleosynthesis constraints. To show this, we perform a global analysis of Q-ball formation and decay in Affleck-Dine baryogenesis for a d = 6 (u(c)d(c)d(c))(2) flat direction of the gauge-mediated MSSM. A general phenomenological potential for the flat-direction is studied and the Q-ball decay properties are obtained as a function of its parameters. The corresponding gravitino mass necessary to account for dark matter is then determined for the case of stau NLSPs. The decay temperature depends on the charge of the Q-balls, which is determined by the fragmentation of the AD condensate. Different fragmentation scenarios are considered, and the final non-thermal NLSP density from Q-ball decay and NLSP annihilation is determined. Particular care is taken to establish that NLSPs from Q-ball decay become homogeneous and non-relativistic prior to annihilation. The gravitino mass necessary for dark matter is naturally consistent with the theoretical gravitino mass in the gauge-mediation model.

KW - dark matter theory

KW - baryon asymmetry

KW - supersymmetry and cosmology

KW - cosmology of theories beyond the SM

KW - SUPERSYMMETRY BREAKING

KW - BARYOGENESIS

KW - CONDENSATE

KW - MODELS

U2 - 10.1088/1475-7516/2013/07/004

DO - 10.1088/1475-7516/2013/07/004

M3 - Journal article

VL - 2013

JO - Journal of Cosmology and Astroparticle Physics

JF - Journal of Cosmology and Astroparticle Physics

SN - 1475-7516

IS - 7

M1 - 004

ER -