MoriondCalorLSPLSBIvo van Vulpen

Ivo van Vulpen

Introduction:Moriond (Electroweak)La ThuileCalorimetry 2004PerugiaReal hardware conference.Real physics conferenceDisclaimer: Most of the sheets are taken directly from the talks given at Moriond.

Ivo van Vulpen

Small and very nice conference, but still: 90 talks !EW results & precision measurements Searches and SUSYDark matterLarge extra dimensionsNeutrinosB-physicsTheory:Experiment:Discovery of new particles

Ivo van Vulpen

top quark8 sheets

Ivo van Vulpen

Top quark production(tt) 8 pbW->qq (2/3) and lv (1/3) WWbbproductionFinal statesbb qqqqbb qqlvbb lvlvLarge QCD backgroundDi-lepton. small statisticslepton + jets. Most sensitive

Ivo van Vulpen

Tevatron run 2: CDFdi-lepton6 events (0.5 background)Lepton + jets22 events (6 background)126/102 pb-1

Ivo van Vulpen

Tevatron run 2: D0First we have something to say on our run 1 result.

Ivo van Vulpen

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

Ivo van Vulpen

Tevatron run 1: D0Improvement in statistical error is roughly 1.5 (comparable to 2.4 times more data) wow !!SAME DATA

Ivo van Vulpen

New top quark mass averagesD0 lepton + jetsInfluence on rest of EW physics resultsTevatron

Ivo van Vulpen

Another example: Influence new top mass on tan() exclusion region from LEP:In MSSM benchmarks: mtop = 175 GeVmh LEP-excluded tan() region will shrinkmh-max benchmark scenarioFeynHiggs:Computation of mh-max: Loop corrections m4tophigher order corr. -> mh 3 GeV mtop 5 GeV -> mh 5 GeVMaximum mh: in the MSSM 135 GeVhZhALEP

Ivo van Vulpen

Impact new top mass on the electroweak fitOld (new): mh = 96 (117) GeV mh < 219 (251) GeV @ 95% CLnewoldmh Example: W mass. contributions from:

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Electroweak g-24 sheets

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Compare to SM prediction: there is a 1.4/2.7 sigma deviationAnomalous magnetic moment of the muon g-2 collaboration final results Depends on e+e- data or tau data

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Theoretical computation of a [ (g-2)/2] part (1)

Ivo van Vulpen

(2) Hadronic vacuum polarization: experiment (2 ways to extract it) Cannot be calculated(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)Now confirmed by KLOE (radiative events). Maybe BaBar and Cleo can do something as well1(2) Tau decay Gives different e+e- -> hadrons

Ivo van Vulpen

FINAL

Ivo van Vulpen

Electroweak 4 sheets

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E = 48 GeV, Q2 = 0.03 GeV2tree level: -3 10-7

Ivo van Vulpen

Still the old NuTeV discrepancy APV = -160 21 17Significance of parity non-conservation is 6.3 sigma !!Translate to sin2(w)

Ivo van Vulpen

clean eventsneutrinonucleus deep inelastic scatteringprobe strange seahadronsnucleusv and anti-v beamMeasure sin2 W through NC CC cross section ratio:NuTeV:

Ivo van Vulpen

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

Ivo van Vulpen

4 sheetsB-physicsBabar/Belle

Ivo van Vulpen

BABAR and Belle attacking the CKM matrix from all sidesDo they agree on everything ?? Are there anomalies left ??

Ivo van Vulpen

Difference between J/Ks and Ks NP contributions to B0 Ks penguin can result in sin(2)J/Ks sin(2)Ks B0 Ks penguin diagramBabar: sin(2)J/Ks=0.730.06 : sin(2)Ks= 0.50.5 Belle: sin(2)Ks=-1.00.6 Jeroen van Hunen (NIKHEF)Belle B->Ks 3.5 deviation from SMsin(2)sin(2)Old numbersDiff !asymmetryt decay time between tag-B and decay-B SM expMeasured3.5

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CP violation in B0->+-Fit asymmetry to:SUMMARY (BABAR/Belle): doing well, some mysteries left. For no B,B0 and B0 decays no CP violation is observed (except Belle in B0->+-)

Ivo van Vulpen

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

Ivo van Vulpen

Higgs 1 sheetTevatron running&

Ivo van Vulpen

Nothing new on the Higgs front & SUSY searches (updates from HERA, LEP, Tevatron) Tevatron accelerator review: 4.4 fb-1 at FY 09 feasible 8.5 fb-1 at FY 09 very challengingSM cross sectionExcluded cross sectionTevatron operationstarted bad, now ok200420032002Higgs cross section exclusionExpected Higgs boson mass exclusion Factor 50

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4 sheetsPenta-quarksother new patricles&

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New particleNew particles are discovered all the time:

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New particleCould have seen it in Run1 I guess. Now studying decay properties. Seems like charmonium state.charmonium

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K+n-invariant massTrying to understand the structurePentaquarks: + and -- Penta-quarkNew particle

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New particlePenta-quarkA 3rd penta-quark ?? (NA49)(1860)

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5 sheetsExtra dimensions

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e.g. Randall-Sundrum ModelspriorrealityMany theory talks on this subject, a hot topic

Ivo van Vulpen

Ivo van Vulpen

Ivo van Vulpen

Tevatron (direct) and LEP (indirect)Depend on size dimension(like harmonic oscillator boundary conditions)

Ivo van Vulpen

Ivo van Vulpen

11 sheetsDark matter

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Dark matter/energyDark matter halo around galaxiesWhat is dark matter ??AxionWIMP (SUSY stable LSP, 10)matter > baryon --> Non baryonic dark mattertotal > matter --> Dark Energy

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Assume WIMP = SUSY stable LSPDetecting WIMPS (1)

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Detecting WIMPS (2)

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WIMPSSensitive underground detectors, but need large (mass * exposure time)

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WIMPS

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DAMA at MoriondWIMPS

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DAMA at MoriondDAMA at CALORTalks from DAMA 95% the same:

Ivo van Vulpen

Ivo van Vulpen

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

Ivo van Vulpen

Axions8o, so shifts only at sunrise(set)2005: Probe higher axion masses Interact with magnetic field (B2L2) and produce X-rays (a-> )L=10 m, B = 9T100 times more a-> conversionsX ray telescope.(fill magnet with helium)can be produced in the sun.LHC magnetthan any other experiment

Ivo van Vulpen

Other underground experiments: proton decayExplore lifetimes > 1035 yearsAmbitious:100,000,000 kg liquid argon74 sheets in 30 minutesRubbia

Ivo van Vulpen

7 sheetNeutrinos

Ivo van Vulpen

Ivo van Vulpen

Mass eigenstates are mixture of flavour eigenstates (a la CKM matrix)AtmosphericSolar (KAMLAND)Reactor (CHOOZ)If 13 0 --> CP-violation2-3 mixing1-3 mixing1-2 mixingSuperkamiokande (m23)2 = 2-3 eV223 = 45o(m13)2 = ??(m12)2 = 5-7 eV2How do we probe the neutrino sector of the SM:MNS = Maki-Nakagawa-Sakata

Ivo van Vulpen

Super KamiokandeIs disappearance really caused by oscillations ??3.5sigma disfavored2 allowed regions are compatibleDo they really oscillate ??

Ivo van Vulpen

KARMEN excludes part of it (confirmation needed): --> miniBOONEClose to 4 Are there 3 families ??Sterile neutrinos

Ivo van Vulpen

miniBOONE energy spectrum requires more precise cross section dataminiBOONE will cross-check LSND resultDepends on Tevatron programmeUse identical targets at HARPSensitivity nmu->ne

Ivo van Vulpen

What about the absolute mass scale and hierarchy ??We only know mass differences squared (m2) n -> p + e- + vm3m2m1?m3m1m2Lepton number violationNeutrinoless double beta decay

Ivo van Vulpen

ciaoI will leave CERN on the 1st of June

Ivo van Vulpen

Ivo van Vulpen