Dark Matter WIMP and SuperWIMP
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- Arleen Roberts
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1 Dark Matter WIMP and SuperWIMP Shufang Su U. of Arizona S. Su Dark Matters
2 Outline Dark matter evidence New physics and dark matter WIMP candidates: neutralino LSP in MSSM direct/indirect DM searches, collider studies synergy between cosmology and particle physics superwimp S. Su Dark Matters 2
3 We are living through a revolution in our understanding of the Universe on the largest scales For the first time in history, we have a complete picture of the Universe S. Su Dark Matters 3
4 DM evidence: rotation curves Rotation curves of galaxies and galactic clusters NGC 2403 Constrain Ω m Ω i =ρ i /ρ c S. Su Dark Matters 4
5 DM evidence: rotation curves Rotation curves of galaxies and galactic clusters NGC 2403 Constrain Ω m V c 1/r 1/2 Ω i =ρ i /ρ c S. Su Dark Matters 4
6 DM evidence: rotation curves Rotation curves of galaxies and galactic clusters V c const NGC 2403 Constrain Ω m V c 1/r 1/2 Ω i =ρ i /ρ c S. Su Dark Matters 4
7 DM evidence: rotation curves Rotation curves of galaxies and galactic clusters V c const NGC 2403 Dark matter in halo Constrain Ω m V c 1/r 1/2 Ω i =ρ i /ρ c S. Su Dark Matters 4
8 Dark matter evidence: supernovae Supernovae Constrain Ω m Ω Λ S. Su Dark Matters 5
9 Dark matter evidence: CMB Cosmic Microwave Background Constrain Ω Λ +Ω m then now S. Su Dark Matters 6
10 Synthesis Ω 0.5% Ω 0.5% Ω 3% Ω=23% ± 4% Ω=73% ± 4% Remarkable agreement Remarkable precision (~10%) S. Su Dark Matters 7
11 Synthesis Ω 0.5% Ω 0.5% Ω 3% Ω=23% ± 4% Ω=73% ± 4% Remarkable agreement Remarkable precision (~10%) S. Su Dark Matters 7
12 Dark matter vs. dark energy We know how much, but no idea what it is. Dark matter No known particles contribute Probably tied to m weak 100 GeV Several compelling solutions Dark energy All known particles contribute Probably tied to m Planck GeV No compelling solutions S. Su Dark Matters 8
13 Standard Model Quarks Leptons Gauge boson (force carrier) Higgs u c t d s b ν e ν µ ν τ e µ τ γ W ±,Z g H S. Su Dark Matters 9
14 Standard Model Quarks Leptons Gauge boson (force carrier) Higgs u c t d s b ν e ν µ ν τ e µ τ γ W ±,Z g H SM is a very successful theoretical framework describes all experimental observations to date S. Su Dark Matters 9
15 Standard Model Quarks Leptons Gauge boson (force carrier) Higgs u c t d s b ν e ν µ ν τ e µ τ γ W ±,Z g H S. Su Dark Matters 9
16 Standard Model Quarks Leptons Gauge boson (force carrier) Higgs u c t d s b ν e ν µ ν τ e µ τ γ W ±,Z g H Not for cosmology observations Dark Matter Cosmology constant Baryon asymmetry S. Su Dark Matters 9
17 Standard Model Quarks Leptons Gauge boson (force carrier) Higgs u c t d s b ν e ν µ ν τ e µ τ γ W ±,Z g H S. Su Dark Matters 9
18 Standard Model Quarks Leptons Gauge boson (force carrier) Higgs u c t d s b ν e ν µ ν τ e µ τ γ W ±,Z g H CDM requirements S. Su Dark Matters 9
19 Standard Model Quarks Leptons Gauge boson (force carrier) Higgs u c t d s b ν e ν µ ν τ e µ τ γ W ±,Z g H CDM requirements Stable Nonbaryonic Neutral Cold (massive) Correct density Gravitational interacting S. Su Dark Matters 9
20 Standard Model Quarks Leptons Gauge boson (force carrier) Higgs u c t d s b ν e ν µ ν τ e µ τ γ W ±,Z g H CDM requirements Stable Nonbaryonic Neutral Cold (massive) Correct density Gravitational interacting S. Su Dark Matters 9
21 Standard Model Quarks Leptons Gauge boson (force carrier) Higgs u c t d s b ν e ν µ ν τ e µ τ γ W ±,Z g H CDM requirements Stable Nonbaryonic Neutral Cold (massive) Correct density Gravitational interacting S. Su Dark Matters 9
22 Standard Model Quarks Leptons Gauge boson (force carrier) Higgs u c t d s b ν e ν µ ν τ e µ τ γ W ±,Z g H CDM requirements Stable Nonbaryonic Neutral Cold (massive) Correct density Gravitational interacting S. Su Dark Matters 9
23 Standard Model Quarks Leptons Gauge boson (force carrier) Higgs u c t d s b ν e ν µ ν τ e µ τ γ W ±,Z g H CDM requirements Stable Nonbaryonic Neutral Cold (massive) Correct density Gravitational interacting S. Su Dark Matters 9
24 Standard Model Quarks Leptons Gauge boson (force carrier) Higgs u c t d s b ν e ν µ ν τ e µ τ γ W ±,Z g H CDM requirements Stable Nonbaryonic Neutral Cold (massive) Correct density Gravitational interacting S. Su Dark Matters 9
25 Standard Model Quarks Leptons Gauge boson (force carrier) Higgs u c t d s b ν e ν µ ν τ e µ τ γ W ±,Z g H CDM requirements Stable Nonbaryonic Neutral Cold (massive) Correct density Gravitational interacting S. Su Dark Matters 9
26 Standard Model Quarks Leptons Gauge boson (force carrier) Higgs u c t d s b ν e ν µ ν τ e µ τ γ W ±,Z g H CDM requirements Stable Nonbaryonic Neutral Cold (massive) Correct density Gravitational interacting No good candidates for CDM in SM S. Su Dark Matters 9
27 New physics beyond SM DM problem provide precise, unambiguous evidence for new physics Independent motivation for new physics in particle physics S. Su Dark Matters 10
28 New physics beyond SM SM is an effective theory below some energy scale Λ TeV S. Su Dark Matters 11
29 New physics beyond SM SM is an effective theory below some energy scale Λ TeV Hierarchy problem S. Su Dark Matters 11
30 New physics beyond SM SM is an effective theory below some energy scale Λ TeV Hierarchy problem m EW 10 2 GeV S. Su Dark Matters 11
31 New physics beyond SM SM is an effective theory below some energy scale Λ TeV Hierarchy problem m plank GeV m EW 10 2 GeV S. Su Dark Matters 11
32 New physics beyond SM SM is an effective theory below some energy scale Λ TeV Hierarchy problem m plank GeV m EW 10 2 GeV S. Su Dark Matters 11
33 New physics beyond SM SM is an effective theory below some energy scale Λ TeV Hierarchy problem m plank GeV m EW 10 2 GeV S. Su Dark Matters 11
34 New physics beyond SM SM is an effective theory below some energy scale Λ TeV Hierarchy problem Naturalness problem m plank GeV m EW 10 2 GeV S. Su Dark Matters 11
35 New physics beyond SM SM is an effective theory below some energy scale Λ TeV Hierarchy problem m plank GeV Naturalness problem (m H 2 ) physical (100 GeV) 2 H = (m 2 H ) 0 (1019 GeV)2 + Λ 2 (10 19 GeV) 2 m EW 10 2 GeV S. Su Dark Matters 11
36 New physics beyond SM SM is an effective theory below some energy scale Λ TeV Hierarchy problem m plank GeV Naturalness problem (m H 2 ) physical (100 GeV) 2 H = (m 2 H ) 0 (1019 GeV)2 + Λ 2 (10 19 GeV) 2 m EW 10 2 GeV precise cancellation up to order S. Su Dark Matters 11
37 New physics beyond SM SM is an effective theory below some energy scale Λ TeV Hierarchy problem m plank GeV Naturalness problem (m H 2 ) physical (100 GeV) 2 H = (m 2 H ) 0 (1019 GeV)2 + Λ 2 (10 19 GeV) 2 m EW 10 2 GeV precise cancellation up to order New physics to protect electroweak scale new symmetry: supersymmetry new space dimension: extradimension S. Su Dark Matters 11
38 Dark matter in new physics Dark Matter: new stable particle in many theories, dark matter is easier to explain than no dark matter there are usually many new weak scale particle constraints (proton decay, large EW corrections) discrete symmetry stability good dark matter candidate S. Su Dark Matters 12
39 Dark matter candidates Many ideas of DM candidates: WIMP primodial black holes axions warm gravitinos Q balls wimpzillas superwimps selfinteracting particles selfannihilating particles fuzzy dark matter branons mass and interaction strengths span many, many orders of magnitude S. Su Dark Matters 13
40 Dark matter candidates WIMP superwimps S. Su Dark Matters 13
41 Dark matter candidates WIMP superwimps appear in particle physics models motivated independently by attempts to solve Electroweak Symmetry Breaking relic density are determined by m pl and m weak naturally around the observed value no need to introduce and adjust new energy scale S. Su Dark Matters 13
42 WIMP Boltzmann equation expansion χχ ff ff χχ S. Su Dark Matters 14
43 WIMP Boltzmann equation Thermal expansion equilibrium χχ ff ff χχ χχ ff WIMP S. Su Dark Matters 14
44 WIMP Boltzmann equation expansion χχ ff ff χχ Universe cools: n=n EQ e m/t WIMP S. Su Dark Matters 14
45 WIMP Boltzmann equation expansion χχ ff ff χχ Freeze out, n/s const WIMP S. Su Dark Matters 14
46 WIMP Boltzmann equation expansion χχ ff ff χχ S. Su Dark Matters 14
47 WIMP miracle WIMP: Weak Interacting Massive Particle m WIMP m weak σ an α weak 2 m weak 2 Ω h naturally around the observed value S. Su Dark Matters 15
48 Minimal Supersymmetric Standard Model (MSSM) SM particle Spin differ by 1/2 superpartner Squarks sleptons Gauginos Higgsino u c t d s b ν e ν µ ν τ e µ τ B 0 W ±,W 0 g (H u +,H u 0 ), (H d 0, H d ) Supersymmetry breaking, m TeV S. Su Dark Matters 16
49 Minimal Supersymmetric Standard Model (MSSM) SM particle Spin differ by 1/2 superpartner Squarks sleptons Gauginos Higgsino u c t d s b ν e ν µ ν τ e µ τ B 0 W ±,W 0 g (H u +,H u 0 ), (H d 0, H d ) CDM requirements Stable Nonbaryonic Neutral Cold Correct density gravitational interacting Supersymmetry breaking, m TeV S. Su Dark Matters 16
50 Minimal Supersymmetric Standard Model (MSSM) SM particle Spin differ by 1/2 superpartner Squarks sleptons Gauginos Higgsino u c t d s b ν e ν µ ν τ e µ τ B 0 W ±,W 0 g (H u +,H u 0 ), (H d 0, H d ) CDM requirements Stable Nonbaryonic Neutral Cold Correct density gravitational interacting Supersymmetry breaking, m TeV S. Su Dark Matters 16
51 Minimal Supersymmetric Standard Model (MSSM) SM particle Spin differ by 1/2 superpartner Squarks sleptons Gauginos Higgsino u c t d s b ν e ν µ ν τ e µ τ B 0 W ±,W 0 g (H u +,H u 0 ), (H d 0, H d ) CDM requirements Stable Nonbaryonic Neutral Cold Correct density gravitational interacting Supersymmetry breaking, m TeV S. Su Dark Matters 16
52 Minimal Supersymmetric Standard Model (MSSM) SM particle Spin differ by 1/2 superpartner Squarks sleptons Gauginos Higgsino u c t d s b ν e ν µ ν τ e µ τ B 0 W ±,W 0 g (H u +,H u 0 ), (H d 0, H d ) CDM requirements Stable Nonbaryonic Neutral Cold Correct density gravitational interacting Supersymmetry breaking, m TeV S. Su Dark Matters 16
53 Minimal Supersymmetric Standard Model (MSSM) SM particle Spin differ by 1/2 superpartner Squarks sleptons Gauginos Higgsino u c t d s b ν e ν µ ν τ e µ τ B 0 W ±,W 0 g (H u +,H u 0 ), (H d 0, H d ) CDM requirements Stable Nonbaryonic Neutral Cold m > 45 GeV Correct density gravitational interacting Supersymmetry breaking, m TeV S. Su Dark Matters 16
54 Minimal Supersymmetric Standard Model (MSSM) SM particle Spin differ by 1/2 superpartner Squarks sleptons Gauginos Higgsino u c t d s b ν e ν µ ν τ e µ τ B 0 W ±,W 0 g (H u +,H u 0 ), (H d 0, H d ) CDM requirements Stable Nonbaryonic Neutral Cold m > 45 GeV Correct density weak interaction gravitational interacting Supersymmetry breaking, m TeV S. Su Dark Matters 16
55 Minimal Supersymmetric Standard Model (MSSM) SM particle Spin differ by 1/2 superpartner Squarks sleptons Gauginos Higgsino u c t d s b ν e ν µ ν τ e µ τ B 0 W ±,W 0 g (H u +,H u 0 ), (H d 0, H d ) CDM requirements Stable Nonbaryonic Neutral Cold m > 45 GeV Correct density weak interaction gravitational interacting Supersymmetry breaking, m TeV S. Su Dark Matters 16
56 Neutralino LSP as DM new weak scale particle constraints discrete symmetry stability dark matter candidate S. Su Dark Matters 17
57 Neutralino LSP as DM new weak scale particle superpartners constraints discrete symmetry stability dark matter candidate S. Su Dark Matters 17
58 Neutralino LSP as DM new weak scale particle superpartners constraints proton decay discrete symmetry stability dark matter candidate S. Su Dark Matters 17
59 Neutralino LSP as DM new weak scale particle superpartners constraints proton decay discrete symmetry Rparity: SM particle + superpartner stability dark matter candidate S. Su Dark Matters 17
60 Neutralino LSP as DM new weak scale particle superpartners constraints proton decay discrete symmetry stability Rparity: SM particle + superpartner lightest supersymmetric particle (LSP) stable LSP SM particle, LSP super particle dark matter candidate S. Su Dark Matters 17
61 Neutralino LSP as DM new weak scale particle superpartners constraints proton decay discrete symmetry stability Rparity: SM particle + superpartner lightest supersymmetric particle (LSP) stable LSP SM particle, LSP super particle dark matter candidate ~ B 0 ~, W 0 ~, H 0 ~ 0 d, H u Superpartner of Superpartner of gauge bosons Higgs bosons neutralinos χ 0 i, i=1 4 mass eigenstates S. Su Dark Matters 17 Neutralino LSP: χ 1 0 as Dark Matter
62 Neutralino relic density 0.1 Ω χ h (prewmap) Cosmology excludes much of the parameter space CMSSM Ω χ too big cosmology focuses attention on particular regions Ω χ just right S. Su Dark Matters 18
63 Neutralino relic density 0.1 Ω χ h (prewmap) Cosmology excludes much of the parameter space CMSSM Ω χ too big cosmology focuses attention on particular regions Ω χ just right S. Su Dark Matters 18
64 Neutralino relic density 0.1 Ω χ h (prewmap) Cosmology excludes much of the parameter space CMSSM Ω χ too big cosmology focuses attention on particular regions Ω χ just right S. Su Dark Matters 18
65 Neutralino relic density 0.1 Ω χ h (prewmap) Cosmology excludes much of the parameter space CMSSM Ω χ too big cosmology focuses attention on particular regions Ω χ just right S. Su Dark Matters 18
66 Neutralino relic density 0.1 Ω χ h (prewmap) Cosmology excludes much of the parameter space CMSSM Ω χ too big cosmology focuses attention on particular regions Ω χ just right S. Su Dark Matters 18
67 Dark matter detection DM f DM f DM annihilation Ω1/<σv> Not overclose universe Efficient annihilation then S. Su Dark Matters 19
68 Dark matter detection DM DM DM annihilation f f Cross symmetry DM f DM f Ω1/<σv> DM scattering Not overclose universe Efficient annihilation then S. Su Dark Matters 19
69 Dark matter detection DM DM DM annihilation f f Cross symmetry DM f DM f Ω1/<σv> Not overclose universe Efficient annihilation then DM scattering Efficient scattering now direct DM direction S. Su Dark Matters 19
70 Dark matter detection DM DM DM annihilation f f Cross symmetry DM f DM f Ω1/<σv> Not overclose universe Efficient annihilation then DM scattering Efficient scattering now direct DM direction Efficient annihilation now indirect DM direction S. Su Dark Matters 19
71 Direct detection DM detector S. Su Dark Matters 20
72 Direct detection DM Measure nuclear recoil energy detector S. Su Dark Matters 20
73 Direct detection DM Measure nuclear recoil energy detector S. Su Dark Matters 20
74 Direct detection DM Measure nuclear recoil energy detector Number of target nuclei in detector S. Su Dark Matters 20
75 Direct detection DM Measure nuclear recoil energy detector Number of target nuclei in detector Local WIMP density (astro physics) S. Su Dark Matters 20
76 Direct detection DM Measure nuclear recoil energy detector Number of target nuclei in detector scattering cross section (particle physics) Local WIMP density (astro physics) S. Su Dark Matters 20
77 Direct detection DM Measure nuclear recoil energy detector Number of target nuclei in detector scattering cross section (particle physics) Local WIMP density (astro physics) elastic scattering inelastic scattering: measure ionization, photon, spin dependent scattering spin independent scattering: dominant for heavy atom target S. Su Dark Matters 20
78 Direct detection Spin!independent cross section [cm 2 ] 10!41 Baltz Gondolo 2004 Ruiz et al % CL Ruiz et al % CL CDMS II 1T+2T Ge Reanalysis XENON CDMS II 2008 Ge CDMS II Ge combined 10!42 10!43 10! WIMP mass [GeV/c 2 ] CDMS COUPP S. Su Dark Matters 21
![Direct detection Spin!independent cross section [cm 2 ] 10!41 Baltz Gondolo 2004 Ruiz et al. 2007 95% CL Ruiz et al.](/docs-images/85/92726902/images/79-1.jpg "2007 68% CL CDMS II 1T+2T Ge Reanalysis XENON10 2007 CDMS II 2008 Ge CDMS II Ge combined 10!42 10!43 10!")
79 Direct detection Spin!independent cross section [cm 2 ] 10!41 Baltz Gondolo 2004 Ruiz et al % CL Ruiz et al % CL CDMS II 1T+2T Ge Reanalysis XENON CDMS II 2008 Ge CDMS II Ge combined 10!42 10!43 10! WIMP mass [GeV/c 2 ] CDMS DAMA result? S. Su Dark Matters 21 COUPP
80 Indirect detection DM DM Γ A n DM 2 detector S. Su Dark Matters 22
81 Indirect detection DM DM Γ A n DM 2 Dark Matter annihilates detector recipe in (amplifier) to, a place some particles which are detected by. an experiment S. Su Dark Matters 22
82 Dark Matter annihilates recipe in center of the sun to neutrinos, a place some particles which are detected by AMANDA, ICECUBE. an experiment earth ν µ Dark matter density in the sun, capture rate S. Su Dark Matters 23
83 Indirect detection: neutrino MSSM icecube Hooper and Wang (2003) S. Su Dark Matters 24
84 Dark Matter annihilates in galactic center to photons, recipe a place some particles which are detected by GLAST, HESS. an experiment HESS Dark matter density in the center of the galaxy S. Su Dark Matters 25
85 Indirect detection: gamma ray MSSM EGRET GLAST Hooper and Wang (2003) S. Su Dark Matters 26
86 Dark Matter annihilates in the halo to positions, a place some particles recip e which are detected by AMS, HEAT, PAMELA. an experiment Dark matter density profile in the halo AMS S. Su Dark Matters 27
87 Indirect detection: positron! "#$%&'()'*%&(+*,(.$$(! 1%#',)#(22 e + Mirko Boezio, INFN Trieste Fermilab, 2008/05/02 S. Su Dark Matters 28
88 Collider study of dark matter Can study those regions at colliders Tevatron LHC p p p p ILC Now 2008 Precise determination of new particle mass and coupling Determine DM mass, relic density S. Su Dark Matters 29
89 Neutralino DM in msugra Choose four representative points for detailed study Baer et. al. ISAJET Gondolo et. al. DarkSUSY Belanger et. al. MicroMEGA Feng et. al. ILC cosmology working group S. Su Dark Matters 30
90 Relic density determination: LCC1 result: ΔΩ χ /Ω χ = 1.0% LCC1 Battaglia (2005) S. Su Dark Matters 31
91 Relic density determination: LCC1 result: ΔΩ χ /Ω χ = 1.0% WMAP (current) LCC1 Battaglia (2005) S. Su Dark Matters 31
92 Relic density determination: LCC1 result: ΔΩ χ /Ω χ = 1.0% WMAP (current) Planck (~2010) LCC1 Battaglia (2005) S. Su Dark Matters 31
93 Relic density determination: LCC1 result: ΔΩ χ /Ω χ = 1.0% LHC ( best case scenario ) WMAP (current) Planck (~2010) LCC1 Battaglia (2005) S. Su Dark Matters 31
94 Relic density determination: LCC1 result: ΔΩ χ /Ω χ = 1.0% ILC LHC ( best case scenario ) WMAP (current) Planck (~2010) LCC1 Battaglia (2005) S. Su Dark Matters 31
95 Comparison of prelhc SUSY searches LHC search DM search PreWMAP PostWMAP DM searches are complementary to collider searches When combined, entire cosmologically attractive region will be explored before LHC ( 2008 ) S. Su Dark Matters 32
96 Synergy S. Su Dark Matters 33
97 Synergy Collider Inputs Weakscale Parameters DM Annihilation DMN Interaction S. Su Dark Matters 33
98 Synergy Collider Inputs Weakscale Parameters DM Annihilation DMN Interaction Relic Density Indirect Detection Direct Detection Astrophysical and Cosmological Inputs S. Su Dark Matters 33
99 Synergy parts per mille agreement for Ω χ discovery of dark matter Collider Inputs Weakscale Parameters DM Annihilation DMN Interaction Relic Density Indirect Detection Direct Detection Astrophysical and Cosmological Inputs S. Su Dark Matters 33
100 Synergy parts per mille agreement for Ω χ discovery of dark matter Collider Inputs Weakscale Parameters local DM density and velocity profile DM Annihilation DMN Interaction Relic Density Indirect Detection Direct Detection Astrophysical and Cosmological Inputs S. Su Dark Matters 33
101 Synergy parts per mille agreement for Ω χ discovery of dark matter Collider Inputs Weakscale Parameters local DM density and velocity profile DM Annihilation DMN Interaction Relic Density Indirect Detection Direct Detection Astrophysical and Cosmological Inputs eliminate particle physics uncertainty do real astrophysics S. Su Dark Matters 33
102 Alternative dark matter All of the signals rely on DM having EW interactions. Is this required? S. Su Dark Matters 34
103 Alternative dark matter All of the signals rely on DM having EW interactions. NO! CDM requirements Stable Nonbaryonic Neutral Cold (massive) Correct density Gravitational interacting (much weaker than electroweak) Is this required? S. Su Dark Matters 34
104 Alternative dark matter All of the signals rely on DM having EW interactions. NO! CDM requirements Stable Nonbaryonic Neutral Cold (massive) Correct density Gravitational interacting (much weaker than electroweak) Is this required? S. Su Dark Matters 34
105 Alternative dark matter All of the signals rely on DM having EW interactions. Is this required? NO! CDM requirements But the relic density argument strongly prefers weak interactions. Stable Nonbaryonic Neutral Cold (massive) Correct density Gravitational interacting (much weaker than electroweak) S. Su Dark Matters 34
106 Alternative dark matter All of the signals rely on DM having EW interactions. Is this required? NO! CDM requirements But the relic density argument strongly prefers weak interactions. Stable Nonbaryonic Neutral Cold (massive) Correct density Gravitational interacting (much weaker than electroweak) Ω DM σ 1 (gravitational coupling) 2 σ too small Ω DM too big overclose the Universe S. Su Dark Matters 34
107 superwimp WIMP superwimp + SM particles Feng, Rajaraman and Takayama (2003) Feng, Rajaraman, Takayama (2003); Bi, Li, Zhang (2003); Ellis, Olive, Santoso, Spanos (2003); Wang, Yang (2004); Feng, Su, Takayama (2004); Buchmuller, hamaguchi, Ratz, Yanagida (2004); Roszkowski, Ruiz de Austri, Choi (2004); Brandeburg, Covi, hamaguchi, Roszkowski, Steffen (2005);... S. Su Dark Matters 35
108 superwimp WIMP superwimp + SM particles Feng, Rajaraman and Takayama (2003) WIMP S. Su Dark Matters 35
109 superwimp WIMP superwimp + SM particles Feng, Rajaraman and Takayama (2003) 10 4 s < t < 10 8 s WIMP S. Su Dark Matters 35
110 superwimp WIMP superwimp + SM particles Feng, Rajaraman and Takayama (2003) 10 4 s < t < 10 8 s WIMP S. Su Dark Matters 35
111 superwimp WIMP superwimp + SM particles Feng, Rajaraman and Takayama (2003) 10 4 s < t < 10 8 s SWIMP SM S. Su Dark Matters 35
112 superwimp WIMP superwimp + SM particles Feng, Rajaraman and Takayama (2003) 10 4 s < t < 10 8 s SWIMP SM S. Su Dark Matters 35
113 superwimp WIMP superwimp + SM particles Feng, Rajaraman and Takayama (2003) 10 4 s < t < 10 8 s S. Su Dark Matters 35
114 superwimp WIMP superwimp + SM particles Feng, Rajaraman and Takayama (2003) 10 4 s < t < 10 8 s superwimp e.g. Gravitino LSP LKK graviton WIMP neutral charged S. Su Dark Matters 35
115 superwimp in SUSY SUSY case WIMP superwimp + SM particles S. Su Dark Matters 36
116 superwimp in SUSY SUSY case WIMP superwimp + SM particles Charged slepton Superpartner of lepton S. Su Dark Matters 36
117 superwimp in SUSY SUSY case WIMP superwimp + SM particles Charged slepton Superpartner of lepton Gravitino Superpartner of graviton S. Su Dark Matters 36
118 superwimp in SUSY SUSY case WIMP superwimp + SM particles Charged slepton Superpartner of lepton Gravitino Superpartner of graviton EM, had. cascade change CMB spectrum change light element abundance predicted by BBN Strong constraints! S. Su Dark Matters 36
119 superwimp in SUSY SUSY case WIMP superwimp + SM particles Charged slepton Superpartner of lepton Gravitino Superpartner of graviton superwimp EM, had. cascade WIMP 1 m pl change CMB spectrum change light element SM particle abundance predicted Decay lifetime m pl2 /m~ 3 G by BBN Strong constraints! S. Su Dark Matters 36
120 Neutralino LSP vs. Gravitino LSP WIMP SuperWIMP G ~ χ, ~ ~ l χ, ~ ~ l LSP LSP G ~ S. Su Dark Matters 37
121 stau NLSP 200 GeV δm GeV m~ G 200 GeV Feng, SS and Takayama (2004) fix Ω~ G = 0.23 S. Su Dark Matters 38
122 stau NLSP Feng, SS and Takayama (2004) fix Ω~ G = GeV δm GeV m~ G 200 GeV solve 7 Li anomaly S. Su Dark Matters 38
123 msugra Ellis et. al., hepph/ BBN EM constraints only Usual WIMP allowed region Stau NLSP superwimp allowed region S. Su Dark Matters 39
124 NLSP NLSP NLSP NLSP NLSP S. Su Dark Matters 40
125 SM ~ G SM ~ G SM ~ G SM ~ G SM ~ G S. Su Dark Matters 40
126 SM SM SM SM SM S. Su Dark Matters 40
127 Decay life time SM particle energy/angular distribution m~ G m pl SM SM SM SM SM S. Su Dark Matters 40
128 Decay life time SM particle energy/angular distribution m~ G m pl SM Probes gravity in a particle physics experiments! SM SM BBN, CMB in the lab SM SM Precise test of supergravity: gravitino is a graviton partner S. Su Dark Matters 40
129 Decay life time SM particle energy/angular distribution m~ G m pl SM Probes gravity in a particle physics experiments! SM SM BBN, CMB in the lab SM SM Precise test of supergravity: gravitino is a graviton partner How to trap slepton? S. Su Dark Matters 40
130 Decay life time SM particle energy/angular distribution m~ G m pl SM Probes gravity in a particle physics experiments! SM SM BBN, CMB in the lab SM SM Precise test of supergravity: gravitino is a graviton partner How to trap slepton? Hamaguchi, kuno, Nakaya, Nojiri, (2004) Feng and Smith, (2004) De Roeck et. al., (2005) S. Su Dark Matters 40
131 slepton trapping Feng and Smith, hepph/ Slepton could live for a year, so can be trapped then moved to a quiet environment to observe decays S. Su Dark Matters 41
132 slepton trapping Feng and Smith, hepph/ Slepton could live for a year, so can be trapped then moved to a quiet environment to observe decays LHC: 10 6 slepton/yr possible, but most are fast. Catch 100/yr in 1 kton water S. Su Dark Matters 41
133 slepton trapping Feng and Smith, hepph/ Slepton could live for a year, so can be trapped then moved to a quiet environment to observe decays LHC: 10 6 slepton/yr possible, but most are fast. Catch 100/yr in 1 kton water LC: tune beam energy to produce slow sleptons, can catch 1000/yr in 1 kton water S. Su Dark Matters 41
134 Conclusion S. Su Dark Matters 42
135 Conclusion We now know the composition of the Universe S. Su Dark Matters 42
136 Conclusion We now know the composition of the Universe No known particle in the SM can be DM S. Su Dark Matters 42
137 Conclusion We now know the composition of the Universe No known particle in the SM can be DM precise, unambiguous evidence for new physics S. Su Dark Matters 42
138 Conclusion We now know the composition of the Universe No known particle in the SM can be DM precise, unambiguous evidence for new physics New physics S. Su Dark Matters 42
139 Conclusion We now know the composition of the Universe No known particle in the SM can be DM precise, unambiguous evidence for new physics New physics new stable particle as DM candidate S. Su Dark Matters 42
140 Conclusion We now know the composition of the Universe No known particle in the SM can be DM precise, unambiguous evidence for new physics New physics new stable particle as DM candidate WIMP: neutralino LSP in MSSM, LKP in UED S. Su Dark Matters 42
141 Conclusion We now know the composition of the Universe No known particle in the SM can be DM precise, unambiguous evidence for new physics New physics new stable particle as DM candidate WIMP: neutralino LSP in MSSM, LKP in UED direct/indirect DM searches, collider studies S. Su Dark Matters 42
142 Conclusion We now know the composition of the Universe No known particle in the SM can be DM precise, unambiguous evidence for new physics New physics new stable particle as DM candidate WIMP: neutralino LSP in MSSM, LKP in UED direct/indirect DM searches, collider studies synergy between cosmology and particle physics S. Su Dark Matters 42
143 Conclusion We now know the composition of the Universe No known particle in the SM can be DM precise, unambiguous evidence for new physics New physics new stable particle as DM candidate WIMP: neutralino LSP in MSSM, LKP in UED direct/indirect DM searches, collider studies synergy between cosmology and particle physics S. Su Dark Matters 42
144 Conclusion We now know the composition of the Universe No known particle in the SM can be DM precise, unambiguous evidence for new physics New physics new stable particle as DM candidate WIMP: neutralino LSP in MSSM, LKP in UED direct/indirect DM searches, collider studies synergy between cosmology and particle physics superwimp: new viable candidate for DM S. Su Dark Matters 42
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