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Experimental tests of the SM (1): t he strong force

Experimental tests of the SM (1): t he strong force. FK8022, Lecture 5. Core texts : Review of Particle Physics : QCD minireview Further reading : Quarks and Leptons , an Introductory Course in Modern Physics , Halzen and Martin. Free parameters of the Standard Model.

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Experimental tests of the SM (1): t he strong force

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  1. Experimental tests of the SM (1):the strong force FK8022, Lecture 5 Coretexts: Review ofParticlePhysics : QCD minireview Furtherreading: Quarks and Leptons, an Introductory Course in Modern Physics, Halzen and Martin.

  2. Free parameters of the Standard Model Masses Couplings Flavour and CP violation 19 free parameters (massless neutrino version). SM tests requirebothcollider and non-colliders

  3. Free parameters of the Standard Model Masses Couplings Flavour and CP violation Collider tests of the strong and electroweaksectors (thislecture). CKM, CPV (lecture 6), Higgs (lectures 8,9)

  4. Recent and currentcolliders Diverse and complementarycollider program

  5. Strategy for QCD tests

  6. Collider environmentstostudy QCD

  7. Lepton-nucleondeep-inelasticscattering Pe e.- ’ Pe e.- Pgg Pp p

  8. e- e- Pe Q2 selected data =data point p Pp partonxPp x parton

  9. DIS cross section

  10. F2for different scenarios of proton structure F2 H1 experiment at HERA x

  11. Quasi-freequarks and Bjorkenscaling

  12. Bjorkenscaling and the quarkpartonmodel Quasi-freequarks Stronglyboundquarks

  13. The final part of the story: perturbative QCD processes + + +

  14. Scalingviolations Standard Model HERA Lowenergy DIS

  15. Extractionofas • 

  16. Testing QCD at e+e- colliders

  17. Event shapes in e+e-

  18. Event shapes

  19. Event shapemeasurements at LEP Rates over several orders ofmagnitude. Excellent descriptionof QCD-basedmodels.

  20. Extractionofas e+ e-

  21. Moremeasurementsofas •  •  • Lecture 9 • 

  22. QCD at hadron-hadroncolliders hadrons p p hadrons hadrons

  23. Jet production at the LHC jet jet jet jet jet jet

  24. Summaryof QCD tests 2

  25. Measuring the hadroniccontributiontoa e- e- e- e- e- e- + + m+,m- e+,e-

  26. Summary • Range ofactive and recent colliders • Large general purpose experiments • Small experiments tackling specific problems • Coherent program • Eachcollisionenvironment and colliderenergy makes a uniquecontributionto the studyof the strong force • pQCDremainsto be falsifieddespiteincreasing precision and energyscale • as(Mz)=0.1185 ± 0.0006 2

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