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18 papers · 1 filter
Expectations from LHC and LC on Top Physics
Marina Cobal
The current status of top quark studies at the Large Hadron Collider (LHC) and at the Linear Collider (LC) is summarized. Expectations on the measurements of the top mass, coupling…
Special Supersymmetric features of large invariant mass unpolarized and polarized top-antitop production at LHC
M. Beccaria, S. Bentvelsen, M. Cobal +2
We consider the top-antitop invariant mass distributions for production of unpolarized and polarized top quark pairs at LHC, in the theoretical framework of the MSSM. Assuming a "m…
Characterizing Subgroups of Compact Abelian Groups
Dikran Dikranjan, Kenneth Kunen
We prove that every countable subgroup of a compact metrizable abelian group has a characterizing set. As an application, we answer several questions on maximally almost periodic (…
Vacuum decay by p-branes production
Lorenzo Sindoni, Stefano Ansoldi
We present a generalization to the N-dimensional case for the nucleation coefficient of a spherical p-brane, separating two (anti-)de Sitter spacetimes. We use a semiclassical appr…
Gravitational Tunnelling of Relativistic Shells
Stefano Ansoldi, Lorenzo Sindoni
Thin shells in general relativity have been used in the past as keystones to obtain realistic models of cosmological and astrophysical situations. A crucial role for these developm…
On a notion of unilateral slope for the Mumford-Shah functional
Gianni Dal Maso, Rodica Toader
In this paper we introduce a notion of unilateral slope for the Mumford-Shah functional, and provide an explicit formula in the case of smooth cracks. We show that the slope is not…