14,092 research outputs found

    Top properties in ttˉt\bar{t} events at CMS (includes mass)

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    Selected results from the following topics are presented: Measurements of several top quark properties are obtained from the CMS data collected in 2011 at a center-of-mass energy of 7 TeV. The results include measurements of the top quark mass, the W helicity in top decays, the top quark charge, and of the ttˉt\bar{t} spin correlation and the search for anomalous couplings.Comment: 5 pages, 10 figures. Presented at HCP 2012 Hadron Collider Physics Symposium 201

    On discrete integrable equations of higher order

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    We study 2D discrete integrable equations of order 1 with respect to one independent variable and mm with respect to another one. A generalization of the multidimensional consistency property is proposed for this type of equations. The examples are related to the B\"acklund--Darboux transformations for the lattice equations of Bogoyavlensky type.Comment: 20 pages, 2 figure

    Some incidence theorems and integrable discrete equations

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    Several incidence theorems of planar projective geometry are considered. It is demonstrated that generalizations of Pascal theorem due to M\"obius give rise to double cross-ratio equation and Hietarinta equation. The construction corresponding to the double cross-ratio equation is a reduction to a conic section of some planar configuration (203154)(20_3 15_4). This configuration provides a correct definition of the multidimensional quadrilateral lattices on the plane.Comment: 12 p, 7 fi
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