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Collider Phenomenology of SUSY Cosmic Connections

Collider Phenomenology of SUSY Cosmic Connections. &. 杨 金 民. 中科院理论物理所. 2006.9.16 于清华. 目 录. 1 、 Introduction to SUSY. 2 、 Fine-tuning & SUSY. 3 、 GUT & SUSY. 4 、 Cosmic Dark Matter & SUSY. 5 、 SUSY at Colliders. 6 、 Conclusion. 1 、 Introduction. 1.1 What is and why SUSY ?. SUSY.

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Collider Phenomenology of SUSY Cosmic Connections

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  1. Collider Phenomenology of SUSY Cosmic Connections & 杨 金 民 中科院理论物理所 2006.9.16于清华

  2. 目 录 1、Introduction to SUSY 2、Fine-tuning & SUSY 3、GUT & SUSY 4、Cosmic Dark Matter & SUSY 5、 SUSY at Colliders 6、Conclusion

  3. 1、Introduction 1.1 What is and why SUSY ? SUSY |B |F

  4. 起源: 起源于60年代末; 起源于纯数学逻辑 物理模型创建于70年代初 一直是研究热点，有 30000篇文章发表! Why ?

  5. Fine Tuning Dark Matter GUT SUSY Inflation Electroweak Baryogenesis Affleck-Dine Baryogenesis

  6. 超对称是物理吗？ 超粒子有多重？ LHC上发现？ ??? SUSY

  7. 1.2 SUSY Models R-宇称 R-宇称

  8. MSSM NMSSM Singlet S

  9. MSSM mSUGRA

  10. mSUGRA

  11. 不同的破缺机制

  12. all sparticles < TeV TeV-Scale SUSY 1 < 130 GeV 5 Higgs bosons 4 < TeV • Fine-tuning • GUT • 暗物质 Gauginos/Higgsinos < TeV sparticles Others：superheavy Split-SUSY 1 < 150 GeV Higgs Bosons 4：superheavy

  13. 2. Fine-tuning & SUSY 1019 GeV 1015 GeV GUT SUSY 1 TeV SM break 究竟是多大？ 100 GeV Weak Scale

  14. Bare 100 GeV 2

  15. In SUSY: 2 cancel remain How heavy ? Depends on

  16. More about Higgs mass: EW baryogenesis:

  17. 3. GUT & SUSY not sensitive to sfermions light gauginos/higgsino (??) SUSY SM

  18. Maybe unaccessible at LHC sfermions GUT gauginos/higgsino Light ! Not necessarily so light for LHC

  19. 4. Dark Matter & SUSY

  20. Dark Matter Mass:weak-scale Interaction: weak-scale WIMP

  21. Which one is LSP dark matter ? LSP ?

  22. LSP (Dark Matter)

  23. mSUGRA

  24. Split-SUSY

  25. Maybe heavy Maybe unaccessible at LHC sfermions Dark Matter gauginos/higgsino Light ! Most likely so light for LHC

  26. 5、SUSY Search at Colliders LEP (I, II) Tevatron I closed Tevatron II on-going LHC up-coming ILC imagining

  27. LEP (I, II) SUSY Tevatron (I,II)

  28. tan > 2 mh , mA ,mH> 95 GeV 103.5 GeV < chargino LEP Selectron > 100 GeV 47 GeV < neutralino Smuon > 97 GeV 100 GeV < squark Stau> 93 GeV 100 GeV < stop 100 GeV < sbottom

  29. stop -> c chi Tevatron stop -> b l snu stop -> c chi

  30. LHC ILC

  31. LHC ILC 沙漠淘金！ 1粒金子/100亿粒沙子

  32. 在LHC上发现 在ILC上精确 测量粒子谱

  33. LHC: SUSY Typical Signature

  34. b-jet b ET b b-jet ET

  35. LHC

  36. What SUSY partilces can be found at LHC? h, H (CP-even) Higgs Bosons A (CP-odd) H squarks sfermions sleptons Sparticles gauginos Higgsinos gluino charginos neutralinos

  37. LHC Depends on good detection capabilities for b’s and tau’s 只能发现 Gold -plated signal LEP II excluded

  38. LHC TeV-scale SUSY mSUGRA

  39. LHC Dark Matter Constraint

  40. MSSM many all at least h sfermion several sparticle h, H Higgs gaugino higgsino A, H ? maybe no only h Split SUSY

  41. Split-SUSY + pp  - 1 1 e+e-  + - 1 1

  42. LHC Higgs bosons sparticles h H, A, Hsfermions gaugino/Higgsino SM  weak-scale SUSY   ??     ?? Split-SUSY

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