1. Extra Dimensions and Compositeness in μ + μ - Dimitri Bourilkov University of Florida Florida Contribution to Physics TDR SUSY/BSM Review, CMS Week, September 2004, CERN, Geneva

2. D.Bourilkov ED & Compositeness in μ + μ - 2 Contact Interactions, ED etc. general framework for new int.: scale   s (virtual effects) or resonances if   s coupling g (convention g 2 = 4) we constrain g /  operators with canonical dimension N > 4  coupling 1/M N-4 | ij | < 1 helicity amplitudes

3. D.Bourilkov ED & Compositeness in μ + μ - 3 Scales for New Physics Extra dimensions from e + e - and γγ LEP combined (DB): M Hewett > 1.4 (1.2) TeV (=1); D0 2004 ~ 1.5(1.4) TeV Contact interactions LEP: scales up to 19 TeV (leptons) or 13 TeV (hadrons – bb) Z’ LEP: m > 0.434 – 1.787 TeV (diff. models) TEVATRON: m >~ 800 GeV Size of the electron: r e < 1.4  10 -19 m LEP quark: r < ~10 -18 m HERA, r < 5.6  10 -19 m CDF 1997 From the LHC/LC workshop: LHC – contact interactions (LL) up to 30 – 50 TeV LHC / LC workshop hep-ph/0305125

4. D.Bourilkov ED & Compositeness in μ + μ - 4 High-mass Muon Pairs PYTHIA, HERWIG; use of C++ generators for ED under study TeV muons: Simulate with GEANT4/OSCAR: >Bremsstrahlung, e + e - pair production, muon-nucleus interactions (showering), punch-through etc. FAMOS for TeV muons? > Will need it to cover the large parameter space of scales, masses, couplings etc. (full simulation for the background and selected scales for the signals) ORCA Reconstruction (collaborate with UCLA, Dubna, Warsaw …) Main background: Drell-Yan μ + μ - and  +  - (collaborate with SM group); other: WW, cc, bb, tt, fakes, cosmics …

5. D.Bourilkov ED & Compositeness in μ + μ - 5 LHC is a Di-lepton Factory “SM (and more) at the LHC” hep-ph/0003275 and CMS-IN-2000/035; M.Dittmar hep-ex/9606002

6. D.Bourilkov ED & Compositeness in μ + μ - 6 Drell-Yan at High Mass

7. D.Bourilkov ED & Compositeness in μ + μ - 7 PDF Uncertainties LHAGLUE v3 integrated in LHAPDF v3 (D.Bourilkov, C.Group, M.Whalley; hep-ph/0305126 ) Free download from: durpdg.dur.ac.uk/lhapdf/ PYTHIA, HERWIG or stand-alone mode Rich in new: CTEQ6, MRST, Fermi, Alekhin, Botje, ZEUS2002, H12000 and legacy: CTEQ4, CTEQ5, MRST98, GRV98 PDF sets; successor of PDFLIB Typical PDF uncertainties on xsec < 5 % Included in CMKIN_3_2_0 (DB, Veikko Karimaki, Sergey Slabospitsky)

8. D.Bourilkov ED & Compositeness in μ + μ - 8 High-mass Di-lepton Background To control the DY background we need both N(N)LO and EW radiative corrections Plan to investigate MC @ NLO TEV4LHC workshop: no generator today able to do decently both QCD and EW (follow the developments) Side remark: maybe we need a LEP4LHC workshop to collect the accumulated knowledge about MC tuning, hadronization, CR etc. ! DY common for many searches in e + e - μ + μ -  +  -

9. D.Bourilkov ED & Compositeness in μ + μ - 9 Estimates for DC04  +  - /qq background from 70-120 GeV TO mass 70-120 GeV 20-70 GeV  +  - 0.8 % 8.1 % qq (no isol) 0.3 % 1.5 %

10. D.Bourilkov ED & Compositeness in μ + μ - 10 Expected Results for Physics TDR Mass and  efficiency plots for signal/bg Mass resolution for signal/bg Angular distributions, A FB and spin determination for signal/bg Discovery reach as function of luminosity for compositeness and ED (ADD, RS) Systematic effects @ LHC start-up (inclusion and priority after PRS discussions) : most important / difficult part Detector: alignment, calibration, staging, trigger configuration Theory: PDF uncertainties, NLO effects, EW corrections Background from data? Z peak, M < 300-400 GeV

11. D.Bourilkov ED & Compositeness in μ + μ - 11 People from Florida Dimitri Bourilkov, Bockjoo Kim Muon consultants: Darin Acosta et al. PDF uncertainties: Dimitri Bourilkov, Craig Group Theory consultants: Konstantin Matchev, Rick Field

12. D.Bourilkov ED & Compositeness in μ + μ - 12 Outlook High-mass di-leptons are a rich search field for new physics Many things in common for e + e - μ + μ -  +  - : Drell-Yan background (collaborate with SM group, TEV4LHC, LHAPDF) Simulation/Reconstruction of TeV muons (several searches will use them) Understanding the most important systematic effects affecting the discovery reach at LHC start-up and how to control them