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Moriond

LSB. LSP. Calor. Moriond. Ivo van Vulpen. La Thuile. Introduction:. Moriond (Electroweak). Real ‘physics’ conference. Perugia. Calorimetry 2004. Real ‘hardware’ conference. Disclaimer: Most of the sheets are taken directly from the talks given at Moriond.

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Moriond

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  1. LSB LSP Calor Moriond Ivo van Vulpen Ivo van Vulpen

  2. La Thuile Introduction: Moriond (Electroweak) Real ‘physics’ conference Perugia Calorimetry 2004 Real ‘hardware’ conference. Disclaimer: Most of the sheets are taken directly from the talks given at Moriond. Ivo van Vulpen

  3. top quark mass, g-2, s in2(w) Babar & Bell + frustrating sheet Higgs at Tevatron Penta-quarks Discovery claim What is happening TALK why and how can we seen it  Small and very nice conference, but still: 90 talks ! Experiment: EW results & precision measurements B-physics Searches and SUSY Discovery of new particles Dark matter Neutrinos Theory: Large extra dimensions Ivo van Vulpen

  4. top quark 8 sheets Ivo van Vulpen

  5. Top quark production W W g b b q t t q production Final states WWbb (tt) 8 pb W->qq (2/3) and lv (1/3) bb qqlv lepton + jets. Most sensitive bb qqqq bb lvlv Large QCD background Di-lepton. small statistics Ivo van Vulpen

  6. Tevatron run 2: CDF di-lepton Lepton + jets 126/102 pb-1 6 events (0.5 background) 22 events (6 background) Ivo van Vulpen

  7. Tevatron run 2: D0 “First we have something to say on our run 1 result.” Ivo van Vulpen

  8. Tevatron run 1: D0 New D0 analysis technique: Compute event-by-event probability Match measured 4-momenta to expectations for signal (mtop = 170,175,180 etc) and background. Use only 4 jet (clean) events (22 events instead of 77 previously) & all combinations Basically same as difference between: Can it be so important ?? YES!! Ivo van Vulpen

  9. As if you had 2.4 times more data Mtop moves up by 7 GeV !!! D0 l+jets (old) 91 events (new) 22 events Tevatron run 1: D0 wow !! • Improvement in statistical error is roughly 1.5 (comparable to 2.4 times more data) SAME DATA Ivo van Vulpen

  10. TEVATRON RUN1 (old) Mtop moves up by +4.7 GeV RUN1 (new) RUN2 (l+jets) D0 lepton + jets Tevatron New top quark mass averages Influence on rest of EW physics results Ivo van Vulpen

  11. Scenario mh mA Excluded tan() Mh-max>91.0 >91.90.5 < tan() < 2.4 Another example: Influence new top mass on tan() exclusion region from LEP: In MSSM benchmarks: mtop = 175 GeV Maximum mh: in the MSSM 135 GeV hA Computation of mh-max: Loop corrections m4top FeynHiggs: higher order corr. -> mh  3 GeV mh-max benchmark scenario mtop  5 GeV -> mh  5 GeV hZ LEP-excluded tan() region will shrink LEP mh Ivo van Vulpen

  12. Impact new top mass on the electroweak fit  Example: W mass. contributions from: old mh new Old (new): mh = 96 (117) GeV mh < 219 (251) GeV @ 95% CL Ivo van Vulpen

  13. Electroweak g-2 4 sheets Ivo van Vulpen

  14. Anomalous magnetic moment of the muon g-2 collaboration final results “Compare to SM prediction: there is a 1.4/2.7 sigma deviation” Depends on e+e- data or tau data Ivo van Vulpen

  15. (1) light by light scattering: theory! Tedious work. Done by 1 guy basically. Sign flip found in 2002 (PhD student from Marseille ??) Theoretical computation of a [(g-2)/2] part (1) Ivo van Vulpen

  16. (2) Hadronic vacuum polarization: experiment (2 ways to extract it)  Cannot be calculated 1 (1) CMD: e+e- results:  Claim 0.6% uncertainty, but new rad corr shifted cross section by 3%  Region < 1.8 GeV dominates  They were alone (check needed) (2) Tau decay Now confirmed by KLOE (radiative events). Maybe BaBar and Cleo can do something as well  Gives different e+e- -> hadrons Ivo van Vulpen

  17. FINAL Ivo van Vulpen

  18. Electroweak 4 sheets Ivo van Vulpen

  19. E = 48 GeV, Q2 = 0.03 GeV2 tree level: -3 •10-7 Ivo van Vulpen

  20.  APV = -160  21  17 Significance of parity non-conservation is 6.3 sigma !! Translate to sin2(w) Still the old NuTeV ‘discrepancy’ Ivo van Vulpen

  21. NuTeV: neutrino–nucleus deep inelastic scattering probe strange sea v and anti-v beam clean events nucleus hadrons Measure sin2 W through NC CC cross section ratio: Ivo van Vulpen

  22. Extracting sin2(W) from DIS cross sections: Nuclear effects due to target corrections More precise corrections: (1) Z protons and N neutrons (10 x experimental error) (2) QCD radiative corrections new (sin2(W))= - 0.5 NuTeV(towards SM value) new (3) Fermi-motion and nucleair binding effects from target (sin2(W))= - 0.5 NuTeV(towards SM value) NuTeV shifts towards SM value (almost 1 sigma) ! Ivo van Vulpen

  23. B-physics Babar/Belle 4 sheets Ivo van Vulpen

  24. 2 odd things Belle B->Ks 3.5  deviation from SM CP violation in B0->+- BABAR and Belle attacking the CKM matrix from all sides Do they agree on everything ?? Are there anomalies left ?? Ivo van Vulpen

  25. Belle B->Ks 3.5  deviation from SM Jeroen van Hunen (NIKHEF) Difference between J/Ks and Ks NP contributions to B0 Ks penguin can result in sin(2)J/Ks sin(2)Ks sin(2) Old numbers Babar : sin(2)J/Ks=0.730.06 : sin(2)Ks= 0.50.5 Belle : sin(2)Ks=-1.00.6 Diff ! sin(2) B0 Ks  penguin diagram asymmetry Measured 3.5  t decay time between tag-B and decay-B SM exp Ivo van Vulpen

  26. CP violation in B0->+- time time Excluded at 5.2  No CP violation Fit asymmetry to: For no B,B0 and B0 decays no CP –violation is observed (except Belle in B0->+-) SUMMARY (BABAR/Belle): doing well, some mysteries left. Ivo van Vulpen

  27. Most frustrating slide in the conference !! D0 Quite a few talks on theoretical aspects of rare B decays as well. Ivo van Vulpen

  28. Tevatron running & Higgs 1 sheet Ivo van Vulpen

  29. Nothing new on the Higgs front & SUSY searches (updates from HERA, LEP, Tevatron) Higgs cross section exclusion Tevatron operation Excluded cross section 2003 2004 Factor 50 2002 started bad, now ok Expected Higgs boson mass exclusion SM cross section  Tevatron accelerator review: 4.4 fb-1 at FY 09 feasible 8.5 fb-1 at FY 09 very challenging Ivo van Vulpen

  30. Penta-quarks & other new patricles 4 sheets Ivo van Vulpen

  31. New particle ‘New’ particles are discovered all the time: Ivo van Vulpen

  32. New particle charmonium Could have seen it in Run1 I guess. Now studying decay properties. Seems like charmonium state. Ivo van Vulpen

  33. Pentaquarks: + and -- P-wave Exp. Theory (3+2) m+ 1542  5 1592  50 m--1862  5 1720  50 K+n-invariant mass New particle Penta-quark Trying to understand the structure Ivo van Vulpen

  34. BUT Not confirmed by CDF New particle Penta-quark (1860) A 3rd penta-quark ?? (NA49) Ivo van Vulpen

  35. Extra dimensions 5 sheets Ivo van Vulpen

  36. Apparently I was not the only one who was surprised ! Many theory talks on this subject, a hot topic e.g. Randall-Sundrum Models prior reality Ivo van Vulpen

  37. Ivo van Vulpen

  38. Ivo van Vulpen

  39. Depend on size dimension (like harmonic oscillator boundary conditions) Tevatron (direct) and LEP (indirect) Ivo van Vulpen

  40. Ivo van Vulpen

  41. Dark matter 11 sheets Ivo van Vulpen

  42. Dark matter/energy Dark matter halo around galaxies What is dark matter ?? Axion WIMP (SUSY stable LSP, 10) matter >baryon --> Non baryonic dark matter total >matter -->Dark Energy Ivo van Vulpen

  43. Detecting WIMPS (1) Assume WIMP = SUSY stable LSP Ivo van Vulpen

  44. Detecting WIMPS (2) Ivo van Vulpen

  45. WIMPS Sensitive underground detectors, but need large (mass * exposure time) Ivo van Vulpen

  46. DAMA & Edelweiss WIMPS Ivo van Vulpen

  47. WIMPS DAMA at Moriond Ivo van Vulpen

  48. They see something !! DAMA at Moriond DAMA at CALOR Talks from DAMA 95% the same: Ivo van Vulpen

  49. Ivo van Vulpen

  50. EDELWEISS-I (Frejus, inonization-heat measurement, small) Plans: 10-6 pb (now), 10-8 (soon), 10-10 (10 years) Ivo van Vulpen

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