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SUSY Dark Matter in Universal and Nonuniversal Gaugino Mass Models

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Title: SUSY Dark Matter in Universal and Nonuniversal Gaugino Mass Models


1
SUSY Dark Matter in Universal and Nonuniversal
Gaugino Mass Models
  • D. P. Roy
  • Homi Bhabha Centre for Science Education
  • Tata Institute of Fundamental Research
  • Mumbai 400088, India

2
Outline
  • DM Constraints on mSUGRA Model (CMSSM) Bulk
    Ann., Stau Co-ann., Resonant Ann. Focus Point
    Regions.
  • SUGRA Models with Nonuniversal Gaugino Masses
  • Bulk Annihilation Region of Bino LSP in 124,
    175 1200 Models Implications for DM and LHC
    Expts.
  • Mixed Bino-Higgsino LSP in 175 and 1200 Models
    with comparable singlet nonsinglet conts
    Implications for direct DM Expts.
  • Higgsino LSP in the 75 and 200 Models
    Implication for DM and LHC Expts.
  • Wino and Higgsino LSP in AMSB ModelImplications
    for indirect DM Expts.

3
Nature of the Lightest Superparticle (LSP) in
SUGRA Models
Astrophysical Constraints ? Colourless
Chargeless LSP Direct DM Detection Expts ? LSP
not Sneutrino
Diagonal elements M1, M 2, µ in the basis
Nondiagonal elements lt MZ
Exptl Indications ? M1, M 2, µ gt 2MZ in mSUGRA
4
DM Relic Density Constraints on Bino Higgsino
LSP Scenarios of
mSUGRA SUSY Br in HS communicated to the OS via
grav. Int. ? m0 , m ½ , tanß, A0 , sign
(µ) at GUT scale ( A0 0 ve µ)
RGE ( Weak Sc masses)
Imp Weak Sc Scalar mass MHu

(LEP)
RGE
Hyperbolic Br (tan ß gt 5) of µ 2
gt FT
5
Chattopadhyay et al (2003)
m0 m1/2 ? TeV (Bino LSP)
mh gt 115 GeV ? m1/2 gt 400 GeV (M1gt2MZ)
? also large sfermion
mass
Bino does not carry any gauge charge ? Pair
annihilate via sfermion exch
Large sfermion mass ? too large Oh2 Except for
the stau co-ann. region
mh 125 GeV gt m1/2 gt 1 TeV
6
Chakraborty, Chattopadhyay, Rao Roy PRD 2015
FP?
(Constrained by Higgs Mass Bs?µµ )

(Conflict with Direct DM Expts.)
(Squark/Gluino masses gt 8 TeV) Out of LHC Reach
Detectible at CLIC Chattopadhyay et al. PLB 2006
7
Nonuniversal gaugino mass models of SUGRA
Ellis et al. M. Drees 1985
Chattopadhyay Roy(2003), Huitu et al(2000),
Anderson et al(2000), Bino LSP gt generic
over-abundance of DM relic density Higgsino LSP
gt under-abundance of DM relic density for LSP
mass lt 1 TeV. gt SUSY Br by two (singlet
nonsinglet) superfields
8
M3 600 GeV
King, Roberts Roy, JHEP 07
Bino LSP in NUGM
Bulk annihilation region of Bino DM (yellow)
allowed in Non-universal gaugino mass models (m0
70 GeV)
M2
M1
9
Mohanty, Rao Roy (JHEP12)
M3G 800 GeV gt TeV Sc squark/gluino A0
-1300GeV gt mh 125GeV
M1G 250 GeV gt Light bino DM right sleptons
100 GeV gt Bulk annihilation region of DM Even
left sleptons lighter than Wino gtLarge leptonic
BR of SUSY Cascade decay via Wino at LHC gtSS
dilepton trilepton MET signals with hard jets
Hard Positron signal (but 10,000 smaller than
PAMELA?)
(1200) model relatively light wino gt BNL muon
(g-2) signal
10
Bino, Higgsino Wino LSP Signals in Dark Matter
Detection Expts
1. Direct Detection (CDMS, XENON,)
Ge
H
Best for mixed DM ?
Spin ind.
Ge
Not for pure bino, wino or higgsino DM
Mohanty, Rao Roy JHEP 2012
11
BP1 BP2
SUSY Spectrum, Higgs mass Muon g-2 in ( 1200
) model Mohanty, Rao Roy JHEP2013
bino right-slepton mass 100 GeV gt bulk ann.
Region of DM
wino left-slepton mass 400-600GeV gt Muon g-2
µ
gtEW production of Wino Pair _at_LHC Via Drell-Yan
Process.
gtSS dilepton trilepton MET Sig. without
accompanying hard jets. Observable signal _at_13 TeV
LHC Das, Guchait Roy PRD 2014
12
SUSY Spectrum, Higgs mass muon g-2 In a general
NUGM (e.g. 175200) Mohanty, Rao Roy JHEP 2013
M1G 200 GeV gt bino right-slepton masses
100 GeV gt bulk ann. of DM
M2G 500 GeV gt wino left-slepton masses 400
GeV gt muon g-2
M3G 1500 GeV gt squark gluino masses of
3000 GeV (beyond the reach of 14 TeV LHC)
  • Viable SS dilepton and trilepton signals at 8 TeV
    LHC from EW production of wino pair via Drell-Yan
    process
  • Das, Guchait Roy PRD 2014

13
Mixed Bino-Higgsino LSP in 175
modelChattopadhyay,Das Roy PRD 2009 (updated
with XENON100 LUX DD Data)
gH?? c1,2 c3,4
?FP like Band (Bino Higgsino)
?Resonant Annihilation (Bino dominated LSP)
14
Mixed Bino-Higgsino LSP in 1200
modelChattopadhyay,Das Roy PRD 2009 (updated
with XENON100 LUX DD Data)
15


Chakraborty, Chattopadhyay, Rao Roy PRD 2015
1. Higgsino LSP comes naturally here without
any fine-tuning unlike the case of CMSSM.2. A 1
TeV Higgsino LSP corresponds to gluino stop
masses of 2-3 TeV, atleast a part of which can be
probed at the high luminosity LHC.
Higgsino LSP in 75 and 200 Models
NUGM 75
16
Inverted mass hierarchy of squarks and Higgsino
dominance of ?01,2 gt Dominance of
gtgluino pair decay gives a distinctive signal
with two SS tops or 3-4 tops (MET) 100 events
the high luminosity run of L 100 fb-1.
17
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18
Resonant Annihilation Region
NUGM 200
19
gt Dominance of
gtgluino pair decay gives a distinctive signal
with two SS tops or 3-4 tops (MET) 100 events
the high luminosity run of L 100 fb-1.
20
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21
Wino LSP (mAMSB model)
SUSY braking in HS in communicated to the OS via
the Super-Weyl Anomaly Cont. (Loop)
m3/2 , m0 , tan ß, sign (µ)
RGE ? M1 M2 M3 2.8 1 7.1 including
2-loop conts
22
Chattopadhyay, Das, Konar Roy PRD 07
W
W
W
Robust results, independent of other SUSY
parameters (Valid in any SUSY model with
Wino(Higgsino) LSP)
23
Detection of HE ? Rays from Galactic Centre in
ACT (HESS,CANGAROO,MAGIC,VERITAS)
vs 10-26 cm3/s ?Cont. ? Ray Signal (But too
large p0?? from Cosmic Rays)
W?p0s??s
?
W
  • vs?? vs?Z 10-27-10-28 cm3/s
  • Discrete ? Ray Line Signal (E? m ?)
  • (Small but Clean)

W
W
?(Z)
Huge HE ? Bg from the Sag A at the Galactic
Centre gt GC no good for DM search
24
Reconciling Heavy Wino DM Model with the Relic
Density and PAMELA Data with Sommerfeld
Enhancement Mohanty, Rao Roy IJMP A27,
1250025 (2012)
Enhanced by multiple W boson exchange ladder
diagram (Sommerfeld Resonace) ? Increase of DM
Annihilation CS and decrease of relic density at
Resonance Peak
Hisano,Matsumoto.Nojiri03 . Lattanzi,Silk
09
25
WMAP
Feng, Kaplinghat Yu 2010
26
Rao, Mohanty Roy 2012
27
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