Dark matter in minimal supergravity with type-II seesaw mechanism

被引：16

作者：

Esteves, J. N. ^{[1
,2
]}

Kaneko, S. ^{[1
,2
]}

Romao, J. C. ^{[1
,2
]}

Hirsch, M. ^{[3
]}

Porod, W. ^{[4
]}

机构：

[1] Inst Super Tecn, Dept Fis, P-1049001 Lisbon, Portugal

[2] Inst Super Tecn, CFTP, P-1049001 Lisbon, Portugal

[3] Univ Valencia, CSIC, Inst Fis Corpuscular, AHEP Grp, E-46071 Valencia, Spain

[4] Univ Wurzburg, Inst Theoret Phys & Astron, D-97074 Wurzburg, Germany

来源：

PHYSICAL REVIEW D | 2009年 / 80卷 / 09期

关键词：

LEPTON-FLAVOR VIOLATION; NEUTRINO MASSES; RELIC DENSITY; SUPERSYMMETRY; OSCILLATIONS; PROGRAM; MIXINGS; SEARCH; DECAYS; BARYON;

D O I：

10.1103/PhysRevD.80.095003

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We calculate the relic density of the lightest neutralino in a supersymmetric seesaw type-II ("triplet seesaw") model with minimal supergravity boundary conditions at the grand unified theory (GUT) scale. The presence of a triplet below the GUT scale, required to explain measured neutrino data in this setup, leads to a characteristic deformation of the sparticle spectrum with respect to the pure minimal supergravity (mSUGRA) expectations, affecting the calculated relic dark matter (DM) density. We discuss how the DM allowed regions in the (m(0),M-1/2) plane change as a function of the (type-II) seesaw scale. We also compare the constraints imposed on the models parameter space form upper limits on lepton flavor violating decays to those imposed by DM. Finally, we briefly comment on uncertainties in the calculation of the relic neutralino density due to uncertainties in the measured top and bottom masses.

引用

页数：12

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