1. SUSY at the LHC
in presence of 126GeV Higgs
Sho IWAMOTO
8th Feb. 2013
Seminar at Kyushu University
References)
Endo, Hamaguchi, SI, Yokozaki: [1108.3071][1112.5653][1202.2751],
Endo, Hamaguchi, Ishikawa, SI, Yokozaki: [1212.3935]
The University of Tokyo, JAPAN (4 Kavli IPMU )

2. 2012
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3. LHC!!
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4. LHC is GREAT!ATLAS Recorded:
2012: 21.7 fb-1 @8TeV
2011: 5.25 fb-1 @7TeV
CMS Recorded:
2012: 21.8 fb-1 @8TeV
2011: 5.55 fb-1 @7TeV
5,000,000,000,000,000 5 1015=5000 ) pp collision in total!
(peak: 3.7nb-1/s ~ 3.7 109 coll./s)
From ATLAS/CMS web
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5. Higgs boson
was
Discovered!
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6. Higgs boson
was
Discovered!
6/56

7. but
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8. SUSY
Not
Found.
8/56

9. Where’s
SUSY?
9/56

10. LHC
shut down.
10/56

11. 11/56

12. LHC future plan
2015
2016
2017
2018
2019
2020
2021
2022
2023
2024
13TeV run, 100~200fb-1?
13-14TeV run, 500fb-1?
Long shut down (LS2)
HL-LHC Installation? (proposal)
(finally 3000fb-1 @ 14TeV?)
12/56

13. 1. SUSY 126GeV Higgs
• SUSY
• SUSY Higgs, Naturalness, muon
2. MSSM + vectorlike model (V-MSSM)
•
• LHC
3. Summary?
13/56

14. SUSY (126 GeV Higgs
14/56

15. The Standard Model and The MSSM


 muon
Supersymmetry (SUSY)
15/56

16. 16/56

17. Boson Fermion
17/56

18. The Standard Model and The MSSM


 muon
MSSM (Minimal SUSY Standard Model)


 muon
Supersymmetry (SUSY)
18/56

19. Muon g-2 Problem
 anomaly
Hagiwara, Liao, Martin, Nomura, Teubner [1105.3149]
Can be explained with SUSY
Moroi [ph/9512396]
Cho, Hagiwara, Matsumoto, Nomura [1104.1769] 19/56

20. The Standard Model and The MSSM


 muon
MSSM (Minimal SUSY Standard Model)


 muon
Supersymmetry (SUSY)
20/56

21. The Standard Model and The MSSM
MSSM (Minimal SUSY Standard Model)


 muon
21/56

22. The Standard Model and The MSSM
MSSM (Minimal SUSY Standard Model)


 muon

 Little hierarchy

22/56

23. Higgs mass in the MSSM
tree one-loop level (top-stop)
(stop mixing parameter)
parameter α
Okada, Yamaguchi, Yanagida, 1991
Ellis, Ridolfi, Zwirner, 1991
Haber, Hempfling, 1991
23/56

24. The Standard Model and The MSSM
MSSM (Minimal SUSY Standard Model)


 muon

 Little hierarchy

24/56

25. Little Hierarchy Problem
Higgs:
cancellation
stop
fine-tune
……
25/56

26. The Standard Model and The MSSM
MSSM (Minimal SUSY Standard Model)


 muon

 Little hierarchy

26/56

27. ATLAS SUSY searches
 Hard jets + Missing energy
[ATLAS-CONF-2012-109]
27/56

28. ATLAS Direct Stop searches
LSP R-parity
From ATLAS SUSY public web page
28/56

29. The Standard Model and The MSSM
MSSM (Minimal SUSY Standard Model)


 muon

 Little hierarchy

29/56

30. V-MSSM / V-GMSB
30/56

31. Vector-like
matter
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32. The Standard Model and The MSSM
MSSM (Minimal SUSY Standard Model)
 muon

SUSY
GMSB CMSSM(mSUGRA)
GUT →
Endo, Hamaguchi, SI, Nakayama, Yokozaki [1112.6412]
Ghilencea, Lee, Park [1203.0569]
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33. MSSM + GMSB (or mSUGRA)
MSSM + more complicated SUSY
or
Extended model + GMSB/mSUGRAV-MSSM
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34. Key Idea
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35. 35/56

36. Conflict resolved.
36/56

37. V-MSSM
 V-MSSM =
 Y’ : IR fixed point behavior to ~1.05 mh
 Y’’ : reduces mh
extra Vector-like matters
• No gauge anomaly.
• Gauge couplings unification.
Martin [0910.2732]
Mixing between SM- & vector-like quark
 Too large → flavor problem.
 No mixing→ stable colored particle.
Okada, Moroi (1992); we digged up again in the context “higgs & g-2”.
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38. RESULT
with GMSBframework
mSUGRAframework
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39. VMSSM + GMSB explains muon g-2 anomaly under 126GeV Higgs
||
1.0
||
+
||
1
calculation failed
(technical issue)
vacuum instability
(IR fixed)Δ(g-2)>0
LHC LIMIT!?
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40. LHC constraints on V-MSSM
(1) from searches for extra quarks.
(2) from searches for SUSY.
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41. LHC constraints on V-MSSM
(1) from searches for extra quarks.
(2) from searches for SUSY.
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42. Extra particles in the V-MSSM

 Mass
 Production
 Decay
depending on mixing
btw. vec-like/SM quarks.
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43. Extra particles in the V-MSSM

 Current bounds
 Under “exclusive decay” assumption
 Generic analysis (3rd gen. assumption : )
 Done by ATLAS
3rd gen only
(favored
to avoid
flavor constr.)
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44. ATLAS vector-like quark search (3rd gen. scenario general analysis)
44/56

45. LHC constraints on V-MSSM
(1) from searches for extra quarks.
(2) from searches for SUSY.
45/56

46. LHC signature of the V-GMSB scenario
Examined left as future works
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47. LHC signature of the V-GMSB scenario
 Our analysis
 Neutralino NLSP
 Stau NLSP
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48. VMSSM + GMSB explains muon g-2 anomaly under 126GeV Higgs
||
1.0
||
+
||
1
(IR fixed)Δ(g-2)>0
calculation failed
(technical issue)
vacuum instability
calculation failed
(technical issue)
vacuum instability
48/56

49. VMSSM + GMSB explains muon g-2 anomaly under 126GeV Higgs
||
1.0
||
+
||
1
(IR fixed)Δ(g-2)>0
calculation failed
(technical issue)
vacuum instability
LHC bound
(for long lived
NLSP)
calculation failed
(technical issue)
vacuum instability
49/56

50. Summary?
50/56

51. The Standard Model and The MSSM
MSSM (Minimal SUSY Standard Model)


 muon

 Little hierarchy

51/56

52. The Standard Model and The MSSM
MSSM (Minimal SUSY Standard Model)


 muon

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53. The Standard Model and The MSSM
MSSM (Minimal SUSY Standard Model)


 muon

in conflict!
 MSSM + more complicated SUSY
 Extended model + GMSB
Conflict Resolved!
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54. VMSSM + GMSB explains muon g-2 anomaly under 126GeV Higgs
 LHC constraints
 Extra quark searches
 SUSY searches
calculation failed
(technical issue)
vacuum instability
LHC bound
(for long lived
NLSP)
calculation failed
(technical issue)
vacuum instability
(depending on decay modes)
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55. ?
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56. SUSY

 SUSY-breaking
 GMSB squark slepton messenger
 CMSSM gluino
 MSSM
 NMSSM → tanβ

 → mh → extra?
 Extra U(1) gauge?
→ GUT
Endo, Hamaguchi, Iwamoto, Nakayama, Yokozaki [1112.6412]
 Naturalness
 NMSSM
 + Mirage mediation
56/56
Gunion, Jiang, Kraml [1201.0982]
Ellwanger, Hugonie [1203.5048]
Asano, Higaki [1204.0508]
Kobayashi, Makino, Okumura,
Shimomura, Takahashi [1204.3561]

57. Muon g-2 vs LHC
Endo, Hamaguchi, Iwamoto, Yoshinaga [1302.xxxx]
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58. Electroweakino searches focusing on the muon g-2


58/56
• squark/stau decoupled
•
•
•

59. Electroweakino searches focusing on the muon g-2


59/56
• squark/stau decoupled
•
•
•