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The Tevatron through FY11 DOE, April 22nd

This presentation highlights the impressive achievements of the Tevatron Collider up to FY11, showcasing its record luminosity and extensive contributions to high-energy physics. Involving 15 countries and numerous institutions, the Tevatron played a critical role in discovering new particles and refining measurements of the Standard Model. With insights into Higgs boson searches and the potential for new physics, this overview reflects on the past, present, and future implications of Tevatron data, asserting its lasting impact on the field.

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The Tevatron through FY11 DOE, April 22nd

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  1. The Tevatron through FY11DOE, April 22nd Dmitri Denisov / Darien Wood (D0) Jacobo Konigsberg / Rob Roser (CDF) 1

  2. Outline • Perspective • Highlights • Outlook

  3. Perspective

  4. CDF ♦15 Countries ♦63 Institutions ♦602 authors D0 ♦18 Countries ♦90 Institutions ♦533 Authors 4

  5. 8 years Record peak inst. luminosity 3.6 E 1032 cm–2 s–1 Record luminosity/week 73 pb-1 Record luminosity/month 250 pb-1 Total Luminosity delivered 6.5 fb-1 Run 2 Luminosity Progress L 3.5 E 1032 > 2 fb-1 delivered in 2008 ! 100 times more data than used for Top quark discovery ! L

  6. FY11 Luminosity Projections [delivered] ~12 fb-1 12 fb-1 delivered doubles the dataset up to now and results in analyses with about 10 fb-1 We are here Integrated luminosity (fb-1) Results up to ~ 5 fb-1 by Summer 09 - - - - - - - - - FY04 FY05 FY06 FY07 FY08 FY09 FY10 FY11 FY12

  7. New Physics? • Discoveries • Open new research • Increase precision • Test for New Physics The Tevatron: A Luminosity Story Jets Heavy Flavor L W Z probability Wg Zg WW Single Top tt WZ ZZ ~9 orders of magnitude! Higgs process

  8. The Tevatron Physics Program • Unique window into the unknown • Searches for Supersymmetry, Extra Dimensions, other Exotica • Still at the Energy Frontier • Probing the Terascale as luminosity increases • The Standard Model Higgs is now within reach ! • Precision, new research and discoveries • Mixing, CKM Constraints, and CP-Violation • Heavy Flavor Spectroscopy • New Heavy Baryon states • Tests of QCD and HF production • Top-quark and W-boson Masses • Top quark properties • Di-Boson production and SM Gauge Couplings • New exclusive/diffractive processes We’re addressing questions of fundamental importance

  9. Physics Production • Stable tools and an excellent understanding of the detectors and the data • Productivity is higher than ever • Near 100 new results between Summer08 and Winter09 [CDF+D0] • Tevatron results are dominant in HEP conferences • Still in some areas we are only scratching the surface • Much potential for further precision, reach and discovery • We need to keep exploiting the data from all angles

  10. New Results Since Summer’08 ~ 100 new results

  11. Tevatron Physics Impact • Nearly 100 journal publications last year alone • About 60 Ph.D.’s / year over the last few years • About 3500 physicists have participated on the CDF and D0 experiments D0 CDF

  12. Highlights & Outlook

  13. 2004 2006 2008 ZZ ==> mu,mu,mu,mu Discoveries: rare SM processes Diboson production: more luminosity allows access to smaller cross sections

  14. Single Top Physics Program Test s vs t [new physics] Vtb [precision] Lifetime [new physics] Recent discovery: single top

  15. Observation of new heavy baryons dsb ddb ssb uub 2006 2007 2008

  16. With more data : emergence of a new particle 2.7 fb-1 Y(4140) unknown composition CDF 2009 These new discoveries yield a few events/fb-1 ==> new areas of research @ 10 fb-1

  17. Precision: CPV phase Sin(2βs) Combination of CDF and D0 results is incompatible with the SM at the 2.2-sigma level

  18. Precision ==> Discovery possibilities 5-sigma probability vs βs L More luminosity buys more probability for discovery and increases the sensitivity range

  19. Precision: Mtop At ~10 fb-1 the top mass uncertainty is expected below 1 GeV Mtop = 173.1 ± 0.6(stat) ± 1.1(syst) GeV/c2 Legacy measurement: nearly impossible to beat at a hadron collider

  20. 200 pb-1 (e) D0 Run 2 (e) 1000 pb-1 Precision: Mw Next round CDF @ 2fb-1 expect <30 MeV uncertainty ! Tevatron experiments are now best in world, will remain so for a long, long, time

  21. Precision ==> Higgs constraints New ! With 10 fb-1 If dMw=15 MeV and dMtop=1 GeV [for Mw= 80.400] expect MH = 71 + 24 - 19 GeV   MH < 117 GeV @ 95% CL  ! Expected now with all constraints : MH = 90 +36-27 GeV MH < 163 GeV @ 95 % CL

  22. The Higgs Search • The SM Higgs particle [if it exists] is being produced NOW at the Tevatron ! - we have enough energy • Just not that often & it’s buried in “backgrounds” • It’s a story of luminosity, passion, persistence and luck • We know how to look for it - an we are in fact closing in ! • Over the last years there’s been a dramatic infusion of people, effort and ideas, aimed at finding the Higgs

  23. Higgs boson at the Tevatron PRODUCTION • Gluon fusion is the dominant production mode: σ ~1.1-0.1 pb • W/Z associated production next most frequent mode: σ ~0.2-0.01 pb DECAY Low mass High mass

  24. Higgs at the Tevatron Total H → WW→lvlv WH → lνbb ZH →ννbb ZH → llbb WH → lνbb ZH →ννbb ZH → llbb ~6 months data H → WW → lνlν (double including D0)

  25. Most recent combination CDF + D0 2.4xSM 160 GeV < MH < 170 GeV is excluded at 95% CL !

  26. no words needed

  27. Many channels/experiment CDF + D0: Up to 70 distinct final states !

  28. Higgs Search Progress Orange band = 1.5 [top - achieved ] to 2.25 [bottom] expected improvement factors Progress through analysis improvements and through more luminosity

  29. and some luck 2-sigma Higgs reach with FY11 running and continued analysis improvement [bottom orange band] 3-sigma ~12 fb-1 L

  30. Are these just statistical fluctuations or the beginning of a beautiful friendship Discovery Watch L • Several results show discrepancies with the SM 30

  31. Physics Goals • Operational goals • Summer’09: analyze ~5 fb-1 • This will be a major milestone! • Analyze ~2 fb-1 more each year for key results • Challenging [we have been doing ~1/2 of that] • Program goals • Extract as much juice from the data as possible • Precision, new processes & measurements, New Physics, Higgs • Revisit program • What should go on with increasing lum • What should wrap up • Easy access to tools • Need to make sure teams are in place for key analyses

  32. Summary and Closing Remarks

  33. Summary • The Tevatron program continues to be remarkably successful • A Legacy of discoveries and extraordinary results • So far only 1 to 4 fb-1 of data analyzed • This could increase by factors of 3 to 10 with data from running through 2011 • Exciting potential for future Tevatron discoveries • The Higgs is our domain for a while 33

  34. Remarks on extended running • Physics Motivation • Many ways to slice this pie: • Doubling the dataset • Discovery potential • Uniqueness of some physics at the Tevatron • Legacy measurements • Higgs possibilities • Do not shut down an excellent program until truly obsolete • Recognition that a realistic LHC path to [relevant] physics is not necessarily immediate • Let’s decide to run through FY11 as the baseline plan

  35. Fermilab’s plans Physics Motivation LHC progress Funding Running in 2011 Collab/ people 35

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