31 st International Conference on High Energy Physics. Amsterdam, The Netherlands 24 th – 31 st July 2002. QCD at high energy ( experiments ). K. Long Imperial College London. Mission statement. QCD: Theory of quarks and gluons
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Amsterdam, The Netherlands
24th – 31st July 2002
K. Long Imperial College London
Short talk covering broad, vibrant field: I apologise for not being able to show all important results.
High sensitivity to S at LO
O(S3) and NLL resum.
Angular correlations sensitive to colour factors
Simultaneous fit to 4 angles and R4
Note: DELPHI R4 constraint is included in ‘DELPHI combined’. Not shown for clarity.
Characterise event shape using:
Thrust - T
Cone jetsR = 0.7
Used in fit
Z interference for:e-p constructivee+p destructive
e-p>e+pat high Q2:
Data consistent with ‘Regge’ factorisation:
First set of diffractive PDFs!
Model Pomeron as two gluon system
Direct: high xobs
Resolved: low xobs
Sensitivity to -PDFs?
Sensitivity to jet cuts
Many thanks to all who helped me prepare this talk. Especially, K. Nagano, O. Gonzalez, A. Tapper and E. Laenen.
In partnership we (theorists, phenomenologists and experimentalists) can achieve our ambition!