16,290 research outputs found
A Note on: `Algorithms for Connected Set Cover Problem and Fault-Tolerant Connected Set Cover Problem'
A flaw in the greedy approximation algorithm proposed by Zhang et al. for
minimum connected set cover problem is corrected, and a stronger result on the
approximation ratio of the modified greedy algorithm is established. The
results are now consistent with the existing results on connected dominating
set problem which is a special case of the minimum connected set cover problem.Comment: 6 pages, 1 figure, submitted to Theoretical Computer Scienc
Scalar resonance at 750 GeV as composite of heavy vector-like fermions
We study a model of scalars which includes both the SM Higgs and a scalar
singlet as composites of heavy vector-like fermions. The vector-like fermions
are bounded by the super-strong four-fermion interactions. The scalar singlet
decays to SM vector bosons through loop of heavy vector-like fermions. We show
that the surprisingly large production cross section of di-photon events at 750
GeV resonance and the odd decay properties can all be explained. This model
serves as a good model for both SM Higgs and a scalar resonance at 750 GeV.Comment: 12 pages, no figure, references updated, version for publicatio
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