CDF Robert Roser Fermilab August 23, 2010
The CDF Collaboration Europe North America 30 institutions 21 institutions Asia 8 institutions The CDF Collaboration 15 Countries 59 institutions 538 authors 2 2
CDF • Need large dataset § § • 6 fb-1 Tevatron has delivered 9 fb-1 6 fb-1 data up to March 2010 shown today Need excellent detector § Silicon tracker (SVX) ® § Drift Chamber (COT) ® § ® 96 layers, between 44 and 132 cm TRIGGERED TO 1. 5 Ge. V/c |η| < 1. 5 outer chambers high purity muons Electron, general calorimeter ® § EXCELLENT TRACKING Muon coverage ® § |η| < 2, 90 cm long, r. L 00 = 1. 3 – 1. 6 cm |η| < 2. 8, 3. 5 Triggers ® CAN FIND LEPTONS IN COVERAGE GAPS e, μ, τ, 2 nd Vtx, MET, jets GLOBAL TRACKING, CALORIMETER & B-HADRON ID AT HARDWARE TRIGGER LEVEL 3
Why did 538 authors continue on CDF ? Many fundamental questions of particle physics can be answered by CDF • § § § § 4 Are there new particles & forces beyond the SM ? Is there a Supersymmetry ? Extra dimensions ? Can we produce and study dark matter ? Can rare decays bring new physics to view ? Are there differences between matter and antimatter ? New sources of CP violation ? CPT violation ? Does SM describe electroweak / strong physics at high energies ? Can we measure all SM backgrounds to new physics ? Is the most massive SM particle, the top quark, special ? Do high order theoretical predictions work ? Do observed quark bound states match theory ? What is the true structure of the proton ? How is electroweak symmetry broken ? Is there a Higgs boson or something else ?
Peer review agrees we are asking the right questions CDF on track to surpass 2009 banner year ! 5 Ph. D’s Awarded • 44 awarded since January 2009 • 250 awarded for work on Run II data • 516 CDF students received Ph. D’s thus far
Current CDF physics program • • >100 New Results since last year’s review. Web pages with the details for summer and winter conf results 2010 listed. • • http: //www-cdf. fnal. gov/physics/S 10 CDFResults. html http: //www-cdf. fnal. gov/physics/W 10 CDFResults. html § Tevatron has delivered 9 fb-1, ~8 to tape § 6 fb-1 of analyzed data collected up to March 2010 shown today 6
CDF’s new results 7
Fermilab scientific staff on CDF Fermilab comprises 15% of CDF author list • Leadership • § § § • Physics output § 8 Spokesperson : Rob Roser Higgs Physics Conveners : Ben Kilminster and Eric James QCD Physics Convener : Sasha Pronko B Physics Convener : Diego Tonelli Offline heads : Rick Snider and now Ray Culbertson Operations head : Phil Schlabach and Massimo Casarsa Fermilab staff primary authors on 50% of ~100 new physics results
Fermilab Scientists Play Important Roles Many hold important computing and detector operations roles • As collaboration downsizes, role of and importance of Fermilab scientists increase – most of us carry a pager these days • Provide the long term institutional memory for many systems • Also – their permanent presence at the experiment allow them to guide many physics analyses • 9
The CDF Scientific Effort Senior Scientists M. Albrow* R. Culbertson D. Glenzinski* E. James* S. Lammel J. Lewis M. Lindgren* T. Liu* P. Lukens* K. Maeshima* R. Moore* A. Mukherjee* P. Murat R. Roser P. Schlabach R. Snider R. Tesarek* G. Velev* R. Wagner* W. Wester* S. Wolbers* J. Yo 10 Associate Scientists F. Canelli* (WF)(JA) B. Kilminster* V. Rusu (WF) Application Physicists S. Hahn M. J. Kim* E. J. J. Schmidt J. -C. Yun* Tom Junk Engineering Physicists Halley Brown Michelle Stancari Guest Scientists M. Casarsa M. Corbo (IF) M. Giunta M Trovato N. Kuzhetskiy J Vizan (IF) P. Catastini M. Mondragon (IF) P Squillacioti G. Punzi L. Ristori C. Vellidas (IF) *Also contributes significant effort (>20%) to another thrust WF – Wilson Fellow IF – International Fellow JA – Joint Appointment with the University of Chicago
FY 10 -11 Budgeted FTE Numbers (assuming we end detector ops in 2011) • • 1. 2. 1 CDF RESEARCH ASSOCIATE 40 PPD 38. 7 10. 0 34. 0 9. 0 SCIENTIST 20 ACCELERATOR DIVISION 30 Technical Division 40 PPD 28. 6 0. 4 1. 8 26. 4 25. 0 0. 3 0. 8 24. 0 • • • TECHNICAL SPECIALIST 0. 1 30 Technical Division 0. 1 TECHNICIAN 0. 1 0. 0 (From Connee) 11
Spokespersons Rob Roser Giovanni Punzi Detector Ops Offline Ops Physics Coord Phil Schlabach Massimo Casarsa Rick St. Denis Ray Culbertson Kevin Pitts B TDWG Heather Gerberich Primary Leadership Positions on CDF Fermilab People Circled 12 Top M Kreps D Tonelli F. Margaroli T Schwarz Higgs EWK B Kilminster E James L Nodulman M Lancaster Exotics QCD T. Wright O. Gonzalez S. Pronko C. Mesropian
Career Paths of CDF Research Associates Name Start Date Present Position 1. J. Goldstein 1998 Rutherford Appleton Laboratory, Scientific Staff 2. M. Bishai 1998 Brookhaven National Laboratory, Scientific Staff 3. T. Nelson 1998 SLAC, Scientific Staff 4. P. Gris 1999 Clermont-Ferrand, Faculty 5. J. Dittman 1999 Baylor University, Faculty 6. A. Meyer 1999 University of Aachen, Faculty 7. R. Erbacher 1999 University of California, Davis, Faculty 8. P. Merkel 2000 Purdue University, Associate Scientist 9. A. -P. Colijn 2000 University of Amsterdam, Faculty 10. M. Martinez 2001 University of Barcelona, Faculty 11. C. -J. Lin 2001 Lawrence Berkeley National Laboratory, PDG Scientist 12. N. Kuznetsova 2001 Hamilton College, Faculty (Astrophysics) 13. J. Thom 2002 Cornell University, Faculty 14. B. Reisert 2003 University of Munich, Faculty 15. K. Anikeev 2004 IBM Analyst 16. R. Eusebi 2005 Texas A&M University, Faculty 17. E. Yu 2005 University of Taiwan , faculty 18. K. Sato 2006 University of Tsukuba, faculty 19. S. Burke 2007 APS Congressional Fellow 20. A. Pranko 2005 UC Berkeley, Chamberlain Fellow 21. C. Group 2007 University of Virginia, Faculty 22. K Palencia 2007 CERN Fellow Accepted jobs since we last met 13
Current CDF RA’s Name Start Date Present Position M. Datta 2005 2. A. Golossanov 2005 3. P. Movilla 2006 4. D. Tonelli 2007 5. S. Jindariani 2007 6. J. Freeman 2007 7. S. Carron 2009 8. M Morello 2010 9. TBD 2010 10. TBD 2010 1. Fermi National Accelerator Laboratory, Research Associate Fermi National Accelerator Laboratory, Lederman Fellow Fermi National Accelerator Laboratory, Research Associate 20 of the 22 that Run II RA’s that have moved on have secured tenure-track faculty positions! Currently looking to fill 2 Vacancies 14
CDF Higgs Results Updated All Channels with 5. 6 to 5. 9 fb-1 Search strategy is to utilize ALL decay channels and sum the results 15
No Words Needed 16
Search for H to WW with 5. 9 fb-1 New features and improvements: § § § Fully run-dependent BG samples Re-optimized SS channel Better modeling of DY Optimized trilepton channels Improved systematics Reached single-experiment SM sensitivity Exp: 1. 00, Obs: 1. 08 at Mh=165 Ge. V
Run III -- Beyond 2011 • • Low mass Higgs and in particular Higgs to b-bbar is very HARD for the LHC – Tevatron has a huge advantage • EWK fits all point to a low mass Higgs – we have to look there no matter what is found at much higher mass! • 18 With CERN’s current start-up strategy – Fermilab has an opportunity to say something significant about the Higgs Not seeing a low mass Higgs guarantee’s that there is new physics waiting to be found
Why 3 years (2012 -2014) Tevatron has been running year-by-year since 2007. • We need a sizeable commitment in terms of runduration in order to “reload” with new students and post doc’s who have a career path on the Tevatron • 3 more years = ~16 fb-1 of data per experiment; this enables us to get AT LEAST 3 expected sensitivity across the entire interesting mass region. • LHC, even with their current predicted performance will not be a factor before even this extended program is complete • 19
Prospects for Higgs evidence ~16 fb-1 : > 3 σ expected sensitivity from 100 – 180 Ge. V >4 σ @ 115 Ge. V >6 σ @ 165 Ge. V End of 2011: > 2. 4 σ expected sensitivity across mass range 20
Atlas Higgs Sensitivity 21
Some Final Thoughts on Run III Science is about making progress now • Tevatron has a track record – it is straight forward to extrapolate from where we are now to 2014 • § • 22 That can not be said about the LHC who now has a couple of pb and untested analyses It makes sense to run both programs until the Tevatron physics program is clearly surpassed.
Effort Required to Operate Today Operations 45 Offline 20 Management 10 Algorithms 20 Total Effort 95 In FTE • 30% less than just a few years ago • This is the effort required to do everything except the physics analysis itself • 23
Collab. Survey : Snapshot taken in 2009!!! 2011 be 2012 ill tot FTE 292 249 191 141 I W II ay un rid U. S. 46% 48% 52% R F 50% a n g o postdocs 71 47 29 in 65 m AC su r P 77 students 100 51 33 As fo y te ve 121 fac. level 107 93 79 r ple Notes: Su om - ew c - #’s are in FTE N 2009 2010 - faculty level = teaching and non-teaching faculty + lab scientists 24
Tevatron “Core Physics Program” § § § § § Measurement of sin(2 _s); (8 FTE) Limit on the branching ratio of process Bs→ μ+μ-; (3 FTE) High precision measurement of W boson mass; (4 FTE) High precision measurement of top quark mass; (3 FTE) Measurement of single top production cross-section; (2 FTE) Higgs boson searches both in SM and SUSY scenarios; (25 FTE) SUSY searches in "golden" mode Gaugino-neutralino with trileptons; (3 FTE) SUSY searches in “golden” mode Squark-gluino with multijets plus missing transverse energy; (3 FTE) Searches for high mass resonances in the e+e-, μ+μ-, γγ and jetjet invariant mass spectra (sensitive to Large Extra dimensions, Z' and other processes not present in the Standard Model); (6 FTE) ~60 FTE in total 25
Guest and Visitors… • • • Use this fund judiciously in order to bring scientists to the experiment to work. Typically requires “incremental” $$$ to allow it to happen (travel, per diem, hotel, etc) Sometimes we buy out teaching commitments These are done to fill key roles/responsibilities Other Sources § § International Fellowship program brings 2 -3 people to CDF each year to help us operate! Very helpful URA Fellowships also helpful! Fermilab can not operate CDF alone – it requires a strong commitment from its University partners • Tevatron would benefit from an additional $1 M in FY 11 to 26 provide comparable help to this year. •
Conclusions • CDF is asking many of the most important questions of particle physics § Getting answers which propel the field ® § Powerhouse of results in recent years Possible hints to non-SM physics could get more exciting Higgs effort stronger than ever • Collaboration is smaller, but output is high • § • • 27 # papers 2009 + 2010 = 2005 + 2006 + 2007 + 2008 Fermilab scientists are making a huge impact both on the leadership, physics, operations and computing of the experiment Expect to be competitive with LHC for several years after running and want to Run through 2014
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