The derivation of constraints on the msugra parameter space from the entropy of dark matter halos

L. G. Cabral-Rosetti, M. Mondragón, L. Nellen, D. Núñez, R. Sussmann, J. Zavala

Resultado de la investigación: Capítulo del libro/informe/acta de congresoContribución a la conferencia

Resumen

We derive an expression for the entropy of a present dark matter halo described by a Navarro-Frenk-White modified model with a central core. We obtain an expression for the relic abundance of neutralinos by comparing this entropy of the halo with the value it had during the freeze-out era. Using WMAP observations, we constrain the parameter space for mSUGRA models. Combining our residts with the usual abundance criteria, we are able to discriminate clearly among different validity regions for tan β values. For this, we reqiure both criteria to be consistent within a 2ω bound of the WMAP observations for the relic density: 0.112 < ωh2 < 0.122. We find that for sgn μ = +1, small values of tanβ are not favored; only for tan β ̃ 50 are both criteria significantly consistent. Both criteria allow us to put a lower bound on the neutraUno mass, mx ≥ 141 GeV.

Idioma originalInglés
Título de la publicación alojadaParticles and Fields - Proceedings of the XIII Mexican School of Particles and Fields and Mini-Courses of the XIII Mexican School of Particles and Fields
Páginas199-204
Número de páginas6
DOI
EstadoPublicada - 21 jul 2009
EventoXIII Mexican School of Particles and Fields and Mini-Courses of the XIII Mexican School of Particles and Fields - Hermosillo and San Carlos, Sonora, México
Duración: 2 oct 200811 oct 2008

Serie de la publicación

NombreAIP Conference Proceedings
Volumen1116
ISSN (versión impresa)0094-243X
ISSN (versión digital)1551-7616

Otros

OtrosXIII Mexican School of Particles and Fields and Mini-Courses of the XIII Mexican School of Particles and Fields
PaísMéxico
CiudadHermosillo and San Carlos, Sonora
Período2/10/0811/10/08

Huella dactilar

halos
dark matter
derivation
entropy

Citar esto

Cabral-Rosetti, L. G., Mondragón, M., Nellen, L., Núñez, D., Sussmann, R., & Zavala, J. (2009). The derivation of constraints on the msugra parameter space from the entropy of dark matter halos. En Particles and Fields - Proceedings of the XIII Mexican School of Particles and Fields and Mini-Courses of the XIII Mexican School of Particles and Fields (pp. 199-204). (AIP Conference Proceedings; Vol. 1116). https://doi.org/10.1063/1.3131555
Cabral-Rosetti, L. G. ; Mondragón, M. ; Nellen, L. ; Núñez, D. ; Sussmann, R. ; Zavala, J. / The derivation of constraints on the msugra parameter space from the entropy of dark matter halos. Particles and Fields - Proceedings of the XIII Mexican School of Particles and Fields and Mini-Courses of the XIII Mexican School of Particles and Fields. 2009. pp. 199-204 (AIP Conference Proceedings).
@inproceedings{60850df152fe4658afc4859f204d8721,
title = "The derivation of constraints on the msugra parameter space from the entropy of dark matter halos",
abstract = "We derive an expression for the entropy of a present dark matter halo described by a Navarro-Frenk-White modified model with a central core. We obtain an expression for the relic abundance of neutralinos by comparing this entropy of the halo with the value it had during the freeze-out era. Using WMAP observations, we constrain the parameter space for mSUGRA models. Combining our residts with the usual abundance criteria, we are able to discriminate clearly among different validity regions for tan β values. For this, we reqiure both criteria to be consistent within a 2ω bound of the WMAP observations for the relic density: 0.112 < ωh2 < 0.122. We find that for sgn μ = +1, small values of tanβ are not favored; only for tan β ̃ 50 are both criteria significantly consistent. Both criteria allow us to put a lower bound on the neutraUno mass, mx ≥ 141 GeV.",
keywords = "Dark matter, Galactic halos, Supersymmetric partners of known particles",
author = "Cabral-Rosetti, {L. G.} and M. Mondrag{\'o}n and L. Nellen and D. N{\'u}{\~n}ez and R. Sussmann and J. Zavala",
year = "2009",
month = "7",
day = "21",
doi = "10.1063/1.3131555",
language = "Ingl{\'e}s",
isbn = "9780735406537",
series = "AIP Conference Proceedings",
pages = "199--204",
booktitle = "Particles and Fields - Proceedings of the XIII Mexican School of Particles and Fields and Mini-Courses of the XIII Mexican School of Particles and Fields",

}

Cabral-Rosetti, LG, Mondragón, M, Nellen, L, Núñez, D, Sussmann, R & Zavala, J 2009, The derivation of constraints on the msugra parameter space from the entropy of dark matter halos. En Particles and Fields - Proceedings of the XIII Mexican School of Particles and Fields and Mini-Courses of the XIII Mexican School of Particles and Fields. AIP Conference Proceedings, vol. 1116, pp. 199-204, XIII Mexican School of Particles and Fields and Mini-Courses of the XIII Mexican School of Particles and Fields, Hermosillo and San Carlos, Sonora, México, 2/10/08. https://doi.org/10.1063/1.3131555

The derivation of constraints on the msugra parameter space from the entropy of dark matter halos. / Cabral-Rosetti, L. G.; Mondragón, M.; Nellen, L.; Núñez, D.; Sussmann, R.; Zavala, J.

Particles and Fields - Proceedings of the XIII Mexican School of Particles and Fields and Mini-Courses of the XIII Mexican School of Particles and Fields. 2009. p. 199-204 (AIP Conference Proceedings; Vol. 1116).

Resultado de la investigación: Capítulo del libro/informe/acta de congresoContribución a la conferencia

TY - GEN

T1 - The derivation of constraints on the msugra parameter space from the entropy of dark matter halos

AU - Cabral-Rosetti, L. G.

AU - Mondragón, M.

AU - Nellen, L.

AU - Núñez, D.

AU - Sussmann, R.

AU - Zavala, J.

PY - 2009/7/21

Y1 - 2009/7/21

N2 - We derive an expression for the entropy of a present dark matter halo described by a Navarro-Frenk-White modified model with a central core. We obtain an expression for the relic abundance of neutralinos by comparing this entropy of the halo with the value it had during the freeze-out era. Using WMAP observations, we constrain the parameter space for mSUGRA models. Combining our residts with the usual abundance criteria, we are able to discriminate clearly among different validity regions for tan β values. For this, we reqiure both criteria to be consistent within a 2ω bound of the WMAP observations for the relic density: 0.112 < ωh2 < 0.122. We find that for sgn μ = +1, small values of tanβ are not favored; only for tan β ̃ 50 are both criteria significantly consistent. Both criteria allow us to put a lower bound on the neutraUno mass, mx ≥ 141 GeV.

AB - We derive an expression for the entropy of a present dark matter halo described by a Navarro-Frenk-White modified model with a central core. We obtain an expression for the relic abundance of neutralinos by comparing this entropy of the halo with the value it had during the freeze-out era. Using WMAP observations, we constrain the parameter space for mSUGRA models. Combining our residts with the usual abundance criteria, we are able to discriminate clearly among different validity regions for tan β values. For this, we reqiure both criteria to be consistent within a 2ω bound of the WMAP observations for the relic density: 0.112 < ωh2 < 0.122. We find that for sgn μ = +1, small values of tanβ are not favored; only for tan β ̃ 50 are both criteria significantly consistent. Both criteria allow us to put a lower bound on the neutraUno mass, mx ≥ 141 GeV.

KW - Dark matter

KW - Galactic halos

KW - Supersymmetric partners of known particles

UR - http://www.scopus.com/inward/record.url?scp=67650541522&partnerID=8YFLogxK

U2 - 10.1063/1.3131555

DO - 10.1063/1.3131555

M3 - Contribución a la conferencia

AN - SCOPUS:67650541522

SN - 9780735406537

T3 - AIP Conference Proceedings

SP - 199

EP - 204

BT - Particles and Fields - Proceedings of the XIII Mexican School of Particles and Fields and Mini-Courses of the XIII Mexican School of Particles and Fields

ER -

Cabral-Rosetti LG, Mondragón M, Nellen L, Núñez D, Sussmann R, Zavala J. The derivation of constraints on the msugra parameter space from the entropy of dark matter halos. En Particles and Fields - Proceedings of the XIII Mexican School of Particles and Fields and Mini-Courses of the XIII Mexican School of Particles and Fields. 2009. p. 199-204. (AIP Conference Proceedings). https://doi.org/10.1063/1.3131555