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118 papers · 1 filter
2-filteredness and the point of every Galois topos
Eduardo J. Dubuc
A locally connected topos is a Galois topos if the Galois objects generate the topos. We show that the full subcategory of Galois objects in any connected locally connected topos i…
The scar mechanism revisited
F. Borondo, D. A. Wisniacki, E. G. Vergini +1
Unstable periodic orbits are known to originate scars on some eigenfunctions of classically chaotic systems through recurrences causing that some part of an initial distribution of…
Model-independent measurement of the W boson helicity in top quark decays
D0 Collaboration, V. M. Abazov
We present the first model-independent measurement of the helicity of bosons produced in top quark decays, based on a 1 fb sample of candidate events in the d…
Cooperation and the Emergence of Role Differentiation in the Dynamics of Social Networks
Víctor M. Eguíluz, Martín G. Zimmermann, Camilo J. Cela-Conde +1
By means of extensive computer simulations, the authors consider the entangled coevolution of actions and social structure in a new version of a spatial Prisoner's Dilemma model th…
First measurement of the forward-backward charge asymmetry in top quark pair production
D0 Collaboration, V. M. Abazov
We present the first measurement of the integrated forward-backward charge asymmetry in top-antitop quark pair (ttbar) production in proton-antiproton collisions in the lepton plus…
Search for ZZ and Zγ^* production in p-barp collisions at sqrt(s) = 1.96 TeV and limits on anomalous ZZZ and ZZγ^* couplings
D0 Collaboration, V. Abazov
We present a study of four muon, four electron, and two muon two electron events using 1 fb^(-1) of data collected with the D0 detector at the Fermilab Tevatron p-barp Collider at…