Tevatron Status and Physics Perspectives D Glenzinski Fermilab

Tevatron Status and Physics Perspectives D. Glenzinski Fermilab 19 -May-2008 D. Glenzinski, Fermilab

Outline • • • Introduction Status of the machine Status of the experiments Physics Results Conclusions 19 -May-2008 D. Glenzinski, Fermilab 2

Fermilab Tevatron Wrigley Field Chicago Cellular Field • pp collider at world’s highest energy Ecm = 2 Te. V Tevatron CDF DØ • Run-I 1990 -1995 (110 pb-1 /experiment) • Run-II 2001 -2009 (~7 fb-1 / expected) Main Injector • Performing excellently 19 -May-2008 D. Glenzinski, Fermilab 3

Tevatron Run I • Top Quark discovered in 1995 • CDF and D 0 jointly – Each uncovered ~20 ttbar events in 60 pb-1 • With full Run 1 dataset – ~35 t-tbar events /exp – Full set of top properties explored 19 -May-2008 D. Glenzinski, Fermilab 4

Tevatron Run. II Performance 2008 2007 2006 2005 2002 2003 2004 • Doubled dataset each year four years • Expect 1. 5 -2. 0 fb-1 per year in >=2007 19 -May-2008 D. Glenzinski, Fermilab 5

Tevatron Performance Average Anti-Proton stack rate • Anti-Protons – Doubled stacking rate over last two years – No longer limiting factor 19 -May-2008 D. Glenzinski, Fermilab 6

Tevatron Anti-Protons After. Before 2 -3 months • Making anti-protons is a tough business p + Ni → p + p + pbar + X 1 anti-proton / 60 k protons We collect 2 x 1011 pbar/hour 19 -May-2008 D. Glenzinski, Fermilab 7

Tevatron Performance Average Anti-Proton stack rate • Anti-Protons – Doubled stacking rate over last two years – No longer limiting factor Luminosity delivered/experiment/week • Complex up time – 20 years old – Exceeding original design specs by x 300 – Constant vigilance required 19 -May-2008 D. Glenzinski, Fermilab 8

Tevatron Accelerator Complex • Need entire complex working well to consistently deliver high luminosity runs 19 -May-2008 D. Glenzinski, Fermilab 9

Tevatron Luminosity Projection 10 10 extrapolated from FY 09 FY 10 start 8. 6 fb-1 8 8 ) Integrated Luminosity -1[fb-1] 9 7. 2 fb-1 6 7 6 4 5 4 We’re in this area now 3 fb-1 ≈23 m. A/hr June ‘ 07 NOW Highest ∫ Lum Lowest ∫ Lum 2 3 2 FY 08 start 0 10 / 1/ 20 03 4/ 18 /2 00 4 11 /4 /2 00 4 5/ 23 /2 00 5 12 /9 /2 00 5 6/ 27 /2 00 6 1/ 13 /2 00 7 8/ 1/ 20 07 2/ 17 /2 00 8 9/ 4/ 20 08 3/ 23 /2 00 9 10 /9 /2 00 9 4/ 27 /2 01 11 0 /1 3/ 20 10 • Will reach 6. 5 fb-1 / experiment by end 2009 • A 2010 run would bring that to ~8 fb-1 each 19 -May-2008 D. Glenzinski, Fermilab 10

Tevatron Experiments CDF D 0 • Two experiments: CDF and D 0 – Multipurpose collider detectors – International collaborations, 600+ members each 19 -May-2008 D. Glenzinski, Fermilab 11

CDF Detector Features: • Precision silicon vertexing • Large radius drift chamber (r=1. 4 m) • • 1. 4 T solenoid projective calorimetry (| | < 3. 5) • muon chambers (| | < 1. 0) • Particle identification • Silicon Vertex Trigger 19 -May-2008 D. Glenzinski, Fermilab 12

DZero (D 0) Detector Features: • Precision silicon vertexing • Outer fiber tracker (r=0. 5 m) • 2. 0 T solenoid • hermetic calorimetry (| | < 4) • muon chambers (| | < 2. 0) • New trigger and more silicon in Summer 2006 (Run 2 b) 19 -May-2008 D. Glenzinski, Fermilab 13

Detector Performance • CDF&D 0: stable operations since 2002 • Experiments keeping-up with luminosity • No known problems in foreseeable future 19 -May-2008 D. Glenzinski, Fermilab 14

Physics Productivity CDF Papers D 0 Papers • A Tevatron publication or thesis every 2. 5 days • CDF and D 0 each publishing ~35 papers/year 19 -May-2008 D. Glenzinski, Fermilab 15

Production cross-section (barns) Physics Program 19 -May-2008 with 1 fb- 1 1. 4 x 101 -1 In 1 fb 1 x 1011 6 x 106 6 x 105 • • • 7, 000 3, 000 100 ~ 10 D. Glenzinski, Fermilab QCD Heavy Flavor Electroweak Top Quark New Phenomena Unique capabilities – Energy Frontier – Bs, Bc, b-baryons – LHC groundwork – Top Quarks 16

Inclusive Jet Cross Sections • Agreement with QCD over wide kinematic range • Most precise measurements to date • Provides constraints on PDFs 19 -May-2008 D. Glenzinski, Fermilab 17

W-Charge Asymmetry • Constrains PDFs in LHC relevant region 19 -May-2008 D. Glenzinski, Fermilab 18

Jet Shapes and UE Forward Distance from Jet Axis Central Energy around Jet (Ge. V) Energy in Annulus ( Ge. V ) Bins of Jet Energy Distance from Jet / rad • Fragmentation and Underlying Event well modeled 19 -May-2008 D. Glenzinski, Fermilab 19

V+Jets Processes • Several theory groups have made V+hf calculations – Mangano, et al. , at LO – original motivation for ALPGEN (hep-ph/0108069) – Campbell, Ellis, Maltoni, Willenbrock at NLO – using MCFM (hep-ph/0611348) • These calculations are hard to get right – At LO both V+bb and V+bq are important – Large NLO enhancements (e. g. ~x 2 for W+b) • Experimental feedback important for Tevatron and LHC – V+hf important backgrounds to ttbar, single-top, higgs b l W+ q W- b 19 -May-2008 q’ q- q+ D. Glenzinski, Fermilab g qq+ W l 20

Z+jets Cross Section • Good agreement with NLO predictions 19 -May-2008 D. Glenzinski, Fermilab 21

Z+hf Cross Section • Sensitive to b-quark density in proton • Important background for Higgs, single-top, … • Measure b fraction by fitting mass at secondary vertex. • Updated results now have differential distributions in jet ET, eta, Z PT, Njets , Nb-jets • Significant variations among theory predictions • with 2 fb-1, data statistically inconclusive but prefer Pythia at low ET and Alpgen/NLO at high ET… need more data to differentiate 19 -May-2008 D. Glenzinski, Fermilab 22

W+hf Cross Section 19 -May-2008 D. Glenzinski, Fermilab 23

W+hf cross section • W+c, important in 1 -j and 2 -j (e. g. higgs, single-top) – Ratio(obs) = 7. 7 +/- 1. 7% – Ratio(Alpgen+Pyt) = 4. 0 +/- 1. 2% 19 -May-2008 D. Glenzinski, Fermilab 24

Spectroscopy CDF 1. 1 fb-1 mass determination • Made first observations of several b-hadrons • Program of determining their masses, lifetimes, etc • Together make nice test of HQET/Lattice 19 -May-2008 D. Glenzinski, Fermilab 25

Precision Bs Lifetime • Recent determination of Bs lifetime using hadronic decays • Fit fully+partially reconstructed 19 -May-2008 D. Glenzinski, Fermilab decays 26

Precision Bs Lifetime • Ratio of lifetimes interesting – Theory: – PDG 07: • Single most precise – This: • Control samples 19 -May-2008 D. Glenzinski, Fermilab 27

Direct CP Violation in B+ b u, c, t u c c s, d u s, d c c u • CPV in SM due to different complex phases • New Physics may alter the measured phases • J/ K+ improves WA by x 2 A(B+ -> J/ K+): ~0. 003 (SM) 0. 0074 ± 0. 0061(stat) ± 0. 0027(syst) A(B+ -> J/ +): ~0. 01 (SM) -0. 09 ± 0. 08(stat) ± 0. 03(syst) 19 -May-2008 D. Glenzinski, Fermilab 28

CPV in Bs System • CP-Violation in Bs system unconstrained by Bd measurements • Expected to be small in SM ( s= s=-0. 04) – Small New Physics effects can have large impact 19 -May-2008 D. Glenzinski, Fermilab 29

CPV in Bs System CDF 1. 35 fb-1 2 k Bs candidates D 0 2. 8 fb-1 2 k Bs candidates Mass (J/ ) (Ge. V/c 2) • Bs -> J/ not a pure CP eigenstate – Time dependent angular analysis required to separate CP-even and CPodd components – Builds from B-mixing techniques (e. g. flavor tagging) 19 -May-2008 D. Glenzinski, Fermilab 30

Angular Analysis in Bd • Use Bd->J/ K* decays Parameter CDF Ba. Bar hepex 07040522 |A 0|2 0. 569 ± 0. 009 0. 556 ± 0. 009 ± 0. 010 |A|||2 0. 211 ± 0. 012 ± 0. 006 0. 211 ± 0. 010 ± 0. 006 • Important cross-check of method ||- 0 -2. 96 ± 0. 08 ± 0. 03 -2. 93 ± 0. 08 ± 0. 04 • Competitive with B-factories - 0 2. 97 ± 0. 06 ± 0. 01 2. 91 ± 0. 05 ± 0. 03 – Perform time-dependent angular analysis – Measure relative phases and amplitudes – Compare to B-factory measurements 19 -May-2008 D. Glenzinski, Fermilab 31

CPV in Bs System CDF 1. 35 fb-1 • SM p-value: D 0=7% CDF=15% – D 0 constrains strong phases assuming SU(3) symmetry, CDF unconstrained – Work ongoing to combine (un)constrained results 19 -May-2008 D. Glenzinski, Fermilab 32

A Crack in the SM? 4 of 6 inputs unique to Tevatron, 6 of 6 include Tevatron results. • CDF and D 0 will continue to have a very active heavy flavor program --- many measurements stats limited 19 -May-2008 D. Glenzinski, Fermilab 33

Di. Bosons and TGC • Exploring Triple Gauge Couplings (TGC) with WW, WZ, ZZ, W , and Z samples – Neutral couplings: ZZZ, ZZ Z (better than LEP 2) – Charged couplings: WWZ, WW (complimentary to LEP 2) • Gauge structure of SM very constraining – Deviation unambiguous signal of New Physics • With 2 fb-1 reach LEP 2 sensitivities – All channels statistically limited CDF 2 fb-1 LEP 2 ± 0. 083 (-0. 2, 0. 07) ± 0. 0047 (-0. 05, 0. 12) h 3 ± 0. 084 (-0. 049, 0. 008) h 4 ± 0. 0047 (-0. 02, 0. 034) h 3 Z h 4 Z TGC 19 -May-2008 D. Glenzinski, Fermilab 34

Precision W mass CDF Run II • CDF Run II world’s best using only 200 pb-1 of data • Both experiments aiming for new results at ICHEP – With 2 fb-1 CDF extrapolates to Mw~25 Me. V/c 2, comparable to present world avg; D 0 will be similar 19 -May-2008 D. Glenzinski, Fermilab 35

Precision Top Quark Mass • Precision Mt, Mw cornerstones of our EWK program • New Mt results ( ) in all three channels – Mt=1. 4 Ge. V/c 2 (0. 8%) – x 2 better than Run 2 goal – Working to improve understanding of dominant systematic uncertainties – Could reach 1 Ge. V/c 2 19 -May-2008 D. Glenzinski, Fermilab 36

Mt and MW and MH Heinemeyer, Holik, Stockinger, Weber, Weiglein‘ 08 Weiglein‘ 07 • Prefers light higgs mass… where Te. V has sensitivity 19 -May-2008 D. Glenzinski, Fermilab 37

SM Higgs Production • For MH=140 -110: (WH+ZH)=100 -300 fb • For MH=180 -140: (gg H)=150 -500 fb 19 -May-2008 D. Glenzinski, Fermilab 38

SM Higgs Decay • Most important decays – Low mass – High mass 19 -May-2008 D. Glenzinski, Fermilab 39

Higgs: Experimental Signatures • Most important at Low mass – Signature determined by W, Z decays • Most important at High mass – Leptonic W decays dominant – Some sensitivity also from WH production • Each experiment has results in all these final states 19 -May-2008 D. Glenzinski, Fermilab 40

Higgs: Experimental Signatures • Additional channels now being added – – – 19 -May-2008 D. Glenzinski, Fermilab 41

SM Higgs Search • New channel: (V)H--> qq • Sensitive to all major production mechanisms – WH, ZH, gg. H, Vector-Boson-Fusion • Inclusion improved CDF sensitivity by ~10% 19 -May-2008 D. Glenzinski, Fermilab 42

SM Higgs Search • Require one -->e or , the other -->hadronic • 2 jets Et>15 Ge. V, | |<2. 5 • Rigorously optimized – Investigated 16 NN and their combinations • Rigorously cross-checked – Bgd in 0 j and 1 j bins – Signal in Z--> 19 -May-2008 D. Glenzinski, Fermilab 43

Tevatron Combined Higgs Limits MH=115 Ge. V/c 2 Exp: 3. 3 Obs: 3. 7 19 -May-2008 MH=160 Ge. V/c 2 Exp: 1. 6 Obs: 1. 1 D. Glenzinski, Fermilab ar. Xiv: /0804. 3423 [hep-ex] 44

CDF+D 0 95% CL expected limit/SM Higgs Sensitivity 160 Ge. V Tevatron (Jul 05) Tevatron (Jul 06) Tevatron (Dec 07) Private (Feb 08) • Our sensitivity is improving faster than 1/sqrt(L) – We’ve lots of ideas… and we’re implementing them! 19 -May-2008 D. Glenzinski, Fermilab 45

CDF+D 0 95% CL expected limit/SM Higgs Sensitivity 115 Ge. V Tevatron (Jul 05) Tevatron (Jul 06) Tevatron (Dec 07) Private (Feb 08) • Our sensitivity is improving faster than 1/sqrt(L) – We’ve lots of ideas… and we’re implementing them! 19 -May-2008 D. Glenzinski, Fermilab 46

Tevatron Higgs Reach Projected CDF+D 0 Reach 2010 2009 ICHEP • We can eliminate all MH<180 Ge. V/c 2… or get first glimpse if 150<MH<170 Ge. V/c 2 19 -May-2008 D. Glenzinski, Fermilab 47

Tevatron Higgs Reach • Some comments… – The lines in the previous plot represent the 50 th percentile of pseudo-experiments… can get lucky or unlucky – 3 evidence possible, even likely, if MH in right range and enough luminosity – In the absence of evidence, resulting CL limits more stringent that 95% over most MH<180 § Seriously strains the SM § Eliminates large (and popular) class of Su. Sy models (because they require lowest M <140 Ge. V/c 2) 19 -May-2008 D. Glenzinski, Fermilab 48

Tevatron Hunt for the Higgs • We’re taking this very seriously 19 -May-2008 D. Glenzinski, Fermilab 49

Search for New Phenomena Occupying the energy frontier means the Tevatron experiments have the world’s best sensitivity to many different New Physics models and signatures 19 -May-2008 D. Glenzinski, Fermilab 50

CDF 1 fb-1 Search for New Phenomena • No significant deviations from SM … but not for lack of trying • Thorough program looking for BSM • Over next two years expect another factor 4 or more in data 19 -May-2008 D. Glenzinski, Fermilab 51

Closing Remarks • Tevatron performing well – 4 fb-1/experiment in hand – Expect 6 -8 fb-1/experiment by end Run. II • CDF and D 0 performing well – Publishing wide spectrum of world class results (Tevatron 2007 avg: 1 publication / 5 days) – Ready to take advantage of coming data – Enthusiastically pursuing New Physics and Higgs 19 -May-2008 D. Glenzinski, Fermilab 52

Closing Remarks • The LHC will inherit – Precise determination of ms and constraints on CP phase in Bs sector Bs – Precision Mt ( Mt= 1. 0 -1. 5 Ge. V/c 2) and Mw ( Mw=15 -25 Me. V/c 2) – A more restricted New Physics parameter space – A higgs mass 19 -May-2008 D. Glenzinski, Fermilab 53