Measurement of Dark Matter Relic Measurement of Dark Matter Relic Density in the mSUGRA Co- Density in the mSUGRA Co- annihilation Region annihilation Region at the LHC at the LHC Teruki Kamon In collaboration with Richard Arnowitt, Bhaskar Dutta, Alfredo Gurrola, Abram Krislock, and David Toback Texas A&M University The 16th International Conference on Supersymmetry and the Unification of Fundamental Interactions (SUSY2008), Seoul, Korea, June 16 - 21, 2008 June 17, 2008 Measurement of Dark Matter Relic Density at the LHC 1
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Measurement of Dark Matter Relic Density in the mSUGRA Co-annihilation Region at the LHC
Measurement of Dark Matter Relic Density in the mSUGRA Co-annihilation Region at the LHC. Teruki Kamon In collaboration with Richard Arnowitt , Bhaskar Dutta , Alfredo Gurrola , Abram Krislock , and David Toback Texas A&M University - PowerPoint PPT Presentation
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Measurement of Dark Matter Relic Density Measurement of Dark Matter Relic Density in the mSUGRA Co-annihilation Region in the mSUGRA Co-annihilation Region
at the LHCat the LHC
Teruki KamonIn collaboration with
Richard Arnowitt, Bhaskar Dutta, Alfredo Gurrola, Abram Krislock, and David Toback
Texas A&M UniversityThe 16th International Conference on Supersymmetry and the Unification of Fundamental Interactions
(SUSY2008), Seoul, Korea, June 16 - 21, 2008June 17, 2008
Measurement of Dark Matter Relic Density at the LHC 1
SUSY DM ≟ CDM
Dark Matter (DM) Particle in SUSY Dark Matter (DM) Particle in SUSY & Cosmological Connection & Cosmological Connection
Probing the SUSY Dark MatterProbing the SUSY Dark Matter
SUSY Signal in Co-annihilation (CA) RegionSUSY Signal in Co-annihilation (CA) RegionDM Density (DM Density (hh22 ) at the LHC ) at the LHC
For earlier studies, see Arnowitt For earlier studies, see Arnowitt et alet al., PLB 649 (2007) 73; Arnowitt ., PLB 649 (2007) 73; Arnowitt et alet al,, PLB 639 (2006) 46,, PLB 639 (2006) 46Measurement of Dark Matter Relic Density at the
LHC 2Teruki Kamon
DM Particle in SUSYDM Particle in SUSYSU
SYSU
SY
CDM CDM == Neutralino ( ) Neutralino ( )01~
Ast
roph
ysic
sA
stro
phys
ics
Measurement of Dark Matter Relic Density at the LHC 3
Choosing Benchmark Model …Choosing Benchmark Model …
(WMAP3) 12900940
SM from deviation 3 ~:)2(1054)(1022
GeV 104 GeV; 114
2
44
01
1
.h.
g.sbB.
MM
~
~Higgs
du
Zdu
HHWMA
MmMm
MH/H
in of Sign :)sign(at coupingTrilinear :
at massscalar Common :at mass gaugino Common :
at :tan
(2)GUT0
GUT0
GUT1/2
4
An accidental near degeneracy occurs naturally for light stau in many models. The mSUGRAmSUGRA model is one of them and chosen as our benchmark scenario.
Key experimentalconstraints
Teruki Kamon
Measurement of Dark Matter Relic Density at the LHC
DM Allowed RegionsDM Allowed Regions4
tan= 40A0 = 0, > 0
12
3
4
mSUGRAmSUGRA
R. Arnowitt et al., Phys. Lett. B538 (2002) 121
5
M (
GeV
)
(GeV) 21 /m
M = 5-15 GeV
Smoking Gun of CA Region?Smoking Gun of CA Region?
Excluded by1)Rare B decay b s 2)No CDM candidate3)Magnetic moment of muon
123 Measurement of Dark Matter Relic Density at the