منابع مشابه
New and Old Jet Clustering Algorithms for Electron-Positron Events
Over the years, many jet clustering algorithms have been proposed for the analysis of hadronic final states in ee annihilations. These have somewhat different emphasis and are therefore more or less suited for various applications. We here review some of the most used and compare them from a theoretical and experimental point of view.
متن کاملComparisons of New Jet Clustering Algorithms for Hadron-Hadron Collisions
We investigate a modification of the k⊥-clustering jet algorithm for hadronhadron collisions, analogous to the “Cambridge” algorithm recently proposed for e+e− annihilation, in which pairs of objects that are close in angle are combined preferentially. This has the effect of building jets from the inside out, with the aim of reducing the amount of the underlying event incorporated into them. We...
متن کاملJet observables without jet algorithms
We introduce a new class of event shapes to characterize the jet-like structure of an event. Like traditional event shapes, our observables are infrared/collinear safe and involve a sum over all hadrons in an event, but like a jet clustering algorithm, they incorporate a jet radius parameter and a transverse momentum cut. Three of the ubiquitous jet-based observables — jet multiplicity, summed ...
متن کاملEfficient Clustering Algorithms for Computing Better Local Optima
Clustering with most objective functions is NP-Hard, even to approximate well. However, in many settings it is often sufficient to find a good locally optimal solution than a true global one. This is evident from the vast empirical success of heuristics such as the k-means algorithm. In this paper, we formally initiate study of the problem of efficiently computing a good local optimum to a non-...
متن کاملProbabilistic Jet Algorithms
Conventional jet algorithms are based on a deterministic view of the underlying hard scattering process. Each outgoing parton from the hard scattering is associated with a hard, well separated jet. This approach is very successful because it allows quantitative predictions using lowest order perturbation theory. However, beyond leading order in the coupling constant, when quantum fluctuations a...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Journal of High Energy Physics
سال: 1997
ISSN: 1029-8479
DOI: 10.1088/1126-6708/1997/08/001