Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2010-01-22
Physics
High Energy Physics
High Energy Physics - Phenomenology
70 pages, 25 figures, additional material available from http://www.lpthe.jussieu.fr/~salam/pp-event-shapes/
Scientific paper
We present results for matched distributions of a range of dijet event shapes at hadron colliders, combining next-to-leading logarithmic (NLL) accuracy in the resummation exponent, next-to-next-to leading logarithmic (NNLL) accuracy in its expansion and next-to-leading order (NLO) accuracy in a pure alpha_s expansion. This is the first time that such a matching has been carried out for hadronic final-state observables at hadron colliders. We compare our results to Monte Carlo predictions, with and without matching to multi-parton tree-level fixed-order calculations. These studies suggest that hadron-collider event shapes have significant scope for constraining both perturbative and non-perturbative aspects of hadron-collider QCD. The differences between various calculational methods also highlight the limits of relying on simultaneous variations of renormalisation and factorisation scale in making reliable estimates of uncertainties in QCD predictions. We also discuss the sensitivity of event shapes to the topology of multi-jet events, which are expected to appear in many New Physics scenarios.
Banfi Andrea
Salam Gavin P.
Zanderighi Giulia
No associations
LandOfFree
Phenomenology of event shapes at hadron colliders does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Phenomenology of event shapes at hadron colliders, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Phenomenology of event shapes at hadron colliders will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-514539