Angularities and other shapes

Details Angularities and other shapes Angularities and other shapes

2006-06-15

arxiv.org/abs/hep-ph/0606168v2

ECONFC0601121:T005,2006

Physics

High Energy Physics

High Energy Physics - Phenomenology

10 pages, contribution to the FRIF workshop on first principles non-perturbative QCD of hadron jets, LPTHE, Paris, France, 12-

Scientific paper

I discuss soft-gluon resummation and power corrections for event shape distributions, mostly in e+ e- annihilation. I consider specifically the thrust, the C parameter, and the class of angularities, and show how factorization techniques and dressed gluon exponentiation lead to predictive models of power corrections that are firmly grounded in perturbative QCD. The scaling rule for the shape function for angularities is derived as an example. Finally, I make a few remarks on possible generalizations to hadron collisions, and on their relevance to LHC studies.

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