1. Recent CDF B Results HPC ASIA 2007, Particle & Nuclear Physics Daejung Kong Sep. 12 2007

2. HPC 2007 Nuclear & Particle Physics2 Outline Tevataron Performance CDF Performance Recent CDF B Results Data Processing/Analysis @ CDF

3. HPC 2007 Nuclear & Particle Physics3 Tevatron

4. HPC 2007 Nuclear & Particle Physics4 Accelerator & CDF performance Accelerator delivers.. 3.0 fb -1 delivered 2.5 fb -1 to tape Instant L ~ 2.9x10 32 CDF II accumulated data of 3.0 fb -1 CDF Detector performs well, including silicon detectors Expect 4~6 fb -1 more by 2009~2010.

5. HPC 2007 Nuclear & Particle Physics5 Solenoid –1.4 Tesla Silicon Tracker –|  | < 2 –s vertex ~ 30 mm Central Outer Tracker (COT) –96 layers drift chamber, up to |  |~1 –s P T /P T ~ 0.15% P T –Particle ID with dE/dx Time of Flight –Particle IDof low momentum tracks Muon chamber –4 layers drift chamber outside the calorimeter –|  | < 1 CDF Detector

6. HPC 2007 Nuclear & Particle Physics6 Crossing: 396 ns, 2.5 MHz Level 1: hardware –Electron, Muon, track, missing Et –15-20kHz (reduction ~x200) Level 2: hardware –Cal. Cluster, jet finding, Silicon track –300-350 Hz (reduction ~x5) Level 3: Linux PC farm –~ Offline quantities –50-70 Hz (reduction ~ x6) CDF Trigger System Overview

7. HPC 2007 Nuclear & Particle Physics7 Summer Shutdown 2007 Aug 5Beam off Aug 6 ~ Sep 24Detector Open ~ works Oct 1Close up Oct 8 Detector Checkout Oct 15 ~ Oct 22TeV Startup Oct 29Collisions Start date : Aug 5, 2007. Duration : 10 week (+ 2 weeks of TeV studies) ISL cooling PMT, Online

8. HPC 2007 Nuclear & Particle Physics8 CDF Collaboration 13 countries 60 Institutes 500 people

9. HPC 2007 Nuclear & Particle Physics9 Calendar YearPublications 20034 200417 200540 200645 200736+ Total142+ CDF Publications  CDF Korea group contributes to some essential aspects of CDF operation  Korea group’s publications ~10% of CDF papers in 2006 CDF Korea group * ~3% of CDF collaborators InstitutionKNU, SNU, SKKU KISTI, CNU Faculty5 Researcher7 Ph.D7 M.S.4 Total23 CDF & Korean Activities

10. HPC 2007 Nuclear & Particle Physics10 CDF Physics Programs QCD –b-bbar dijet production cross section –Z+jets cross section measurement –Z  b-bbar –Dijet production cross section measurement B Physics –CP, Mixing –Spectroscopy –Lifetime measurements –Rare decay searches New Phenomena –Search for New Particles Coupling to Z+jets (b'->Z+b) –SUSY –High-mass dielectron (Z’ search) Top –Top mass, width –Production cross section –Search for W' using the single top sample –Top Production Mechanism (gg vs qq) EWK –WZ production –ZZ production –W mass, width Higgs –H   SUSY Higgs –H  WW ME-based analysis –ZH  llbb 2D-NN and MET fitter analysis

11. HPC 2007 Nuclear & Particle Physics11 B Physics & B Triggers PRD71, 032001 (2005) b Production cross section: CDF: Heavy states produced –B 0, B +, B s, B c,  b, Σ b,  b Di-muon trigger (lifetime, mass, branching ratios, ∆  /  ) –p T (  ) > 1.5 GeV/c, within J/  mass window Two displaced-tracks trigger (branching ratios, mixing) –p T > 2 GeV/c, 120  m ≤ d 0 ≤ 1 mm, L xy > 200  m, S p T > 5.5 GeV/c Lepton + displaced-track trigger (lifetime, f baryon, mixing) –p T ( ,e) > 4 GeV/c, 120  m ≤ d 0 ≤ 1 mm, p T > 2 GeV/c, |y| < 1 Large Cross section !

12. HPC 2007 Nuclear & Particle Physics12 J/  trigger Hadronic B trigger B + decays:  b decays 532 events  b -> J/  2.8 K events  b →  c  B Trigger (dimuon, hadronic)

13. HPC 2007 Nuclear & Particle Physics13 B Trigger (dimuon)

14. HPC 2007 Nuclear & Particle Physics14 B Physics Programs B s Mixing  s B   Observation of  b D Mixing  m s =17.77±0.10(stat)±0.07 (syst) ps -1 : > 5  observation B(B s      ) 90% (95%) C.L. B(B d      ) 90% (95%) C.L. Int.Lum. pb -1 < 8.0∙10 -8 (10)< 2.3∙10 -8 (3) 780 ~ 3  observation ~ 5  observation

15. HPC 2007 Nuclear & Particle Physics15 CDF Data Processing

16. HPC 2007 Nuclear & Particle Physics16 fileservers /home /spool DAQ Level 3 Farm Consumer Server/Logger b0dau32 FCC Data Logger fcdfsgi1 Tape Robot (tape archive) 1PB Production Farm PCs IO fcdflnx2fcdflnx3 300 Hz 75 Hz 20 MB/s A APHYSR,ACOSMR,ATESTR B … C … D … E … F … G … H … I IPHYSR (inclusive stream) Defines ~50 primary Datasets Writes events into Files 8 data streams based on dataset bits Dual Ported Disk 20 MB/s13 MB/s 20 MB/s Organizes: Files into Filesets Writes: Filesets to Tape Reconstructs Events Concatenates files Output: ~50 primary Datasets CXFS fcdfsgi2 12 TB SCSI RAID arrays GigaBit Switch CDF Run II Data Flow

17. HPC 2007 Nuclear & Particle Physics17 Volume Data Type(TB) No of Events(M) No of Files ------------------------------------------------------------------------------- Raw Data 804.4 5883.5 932026 Calibration 0.0 0.0 0 Production 905.5 7380.6 996789 MC 380.1 3177.6 463646 Stripped-Prd 40.0 490.1 44601 Stripped-MC 0.5 3.0 533 Ntuple 207.0 8674.4 206525 MC Ntuple 68.8 1103.2 64263 Test 0.0 486.6 167 Others 0.0 0.0 0 -------------------------------------------------------------------------------- Total 2406.2 27198.9 2708550 CDF Data Volume

18. HPC 2007 Nuclear & Particle Physics18 Yearly Volume Yearly Event Yearly File Data Type Increase (TB) Increase (M) Increase ----------------------------------------------------------------------------- Raw Data 259.2 1927.6 292773 Calibration 0.0 0.0 0 Production 386.3 2827.3 336723 MC 172.5 1144.0 173748 Stripped-Prd 14.6 108.3 12647 Stripped-MC 0.3 1.7 292 Ntuple 113.4 2959.5 95753 MC Ntuple 59.7 918.8 55867 Test 0.0 486.6 167 Others 0.0 0.0 0 ----------------------------------------------------------------------------- Total 1006.0 10373.7 967970 CDF Data Volume in 2007 42% of Total Data Volume

19. HPC 2007 Nuclear & Particle Physics19 CDF Raw Data Stream

20. HPC 2007 Nuclear & Particle Physics20 Prd Stream Volume (TB) No of Events (M) No of Files ------------------------------------------------------------------------------------ A 14.6 65.7 17044 B 95.7 640.7 96819 C 107.4 953.7 123284 D 5.6 16.4 5687 E 164.7 946.6 164456 G 113.6 797.9 120099 H 207.2 2199.5 248410 I 0.1 1.1 65 J 157.2 1417.7 171730 ------------------------------------------------------------------------------------ Total 866.1 7039.3 947594 CDF Raw Data Volume

21. HPC 2007 Nuclear & Particle Physics21 Yearly Volume Yearly Event Yearly File Prd StreamIncrease (TB) Increase (M) Increase ------------------------------------------------------------------------ A 0.0 0.0 0 B 47.3 278.9 38945 C 56.3 491.2 56378 D 3.6 10.0 3521 E 86.5 450.1 73587 G 38.9 219.0 30557 H 69.4 701.6 63679 I 0.0 0.0 0 J 84.2 676.6 70056 ----------------------------------------------------------------------- 386.3 2827.3 336723 CDF Raw Data Volume in 2007 45% of Total Raw Data

22. HPC 2007 Nuclear & Particle Physics22 H stream ['xbpp', 'hbpp', 'xbck', 'hbck'] ['xbhd'] ['hbhd'] J stream ['xpee', 'jpee', 'xbmm', 'xbel', 'xpmm', 'xbmu'] ['xrar', 'jbmm'] ['jbel'] ['jpmm'] ['jbmu'] ['jrar'] CDF Data Stream xpmm : J/psi dimuon

23. HPC 2007 Nuclear & Particle Physics23 Data Analysis

24. HPC 2007 Nuclear & Particle Physics24, o ne Candidate event reported at ALEPH(1993) Nobody measured ratio of B s Charmonium final state is similar to for  /  measurement [PDG ‘04] [Babar‘02] ?? Analysis Motivation

25. HPC 2007 Nuclear & Particle Physics25

26. HPC 2007 Nuclear & Particle Physics26 xpmm = xpmm0d+xpmm0h+xpmm0i xpmm0d File Count: 4,060 Average File Size: 277.76MB Total File Size: 1.08TB Total Event Count: 24,782,207 xpmm0h File Count: 1,149 Average File Size: 904.94MB Total File Size: 1015.41GB Total Event Count: 20,632,030 xpmm0i File Count: 1,531 Average File Size: 1.33GB Total File Size: 1.98TB Total Event Count: 44,560,758 Total File Size ~ 4.08 TB Total Liminosity ~ 1.6 fb -1 CDF J/psi(dimuon) Trigger Data Collected b/w 2002.2 ~ 2007.7 Detector Silicon vertex Tracker Central Tracker Muon detector Trigger L1 - charged track (P T >1.5 GeV) matched muon detector L2 - di-muon, opposite charge L3 – di-muon mass (2.7 – 4.0 GeV)

27. HPC 2007 Nuclear & Particle Physics27 Data Analysis Procedure Total File Size ~ 4.08 TB Total Liminosity ~ 1.6 fb-1 Real time : 29,200 hours CPU time : 23,877 hours -------------------------------- Output ntuple size = 226 GB -------------------------------- Skimmed output = 88 GB Decay Channels CAF : CDF Analysis Farm – batch systems SAM : Sequential Access via Metadata - data handling system User Job sumbit CAF SAM Output Data Analysis Procedure Skim O.

28. HPC 2007 Nuclear & Particle Physics28 Reconstruction of J/  and  (2S)

29. HPC 2007 Nuclear & Particle Physics29 Reconstruction of B ±, Bs ~ 3 times yield increased

30. HPC 2007 Nuclear & Particle Physics30 Reconstruction of B ± ~ 3 times yield increased

31. HPC 2007 Nuclear & Particle Physics31 Reconstruction of Bs ~ 3 times yield increased

32. HPC 2007 Nuclear & Particle Physics32 Summary CDF data Analysis performs well using CAF/SAM CDF B physics is complimentary to B factories and/or provides new search & new physics CDF Korean Group has important roles at CDF 1) First observation of, in both and 2) Using di-muon mode modes Published by PRL (PRL 96, 231801 2006) 3) Will continue to study new decay mode