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- Instituto Politécnico de LisboaPT108 papers
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9 papers · 2 filters
Quark condensate for various heavy flavors
Dmitri Antonov, Jose Emilio F. T. Ribeiro
The quark condensate is calculated within the world-line effective-action formalism, by using for the Wilson loop an ansatz provided by the stochastic vacuum model. Starting with t…
Covariant spectator quark model description of the transition
G. Ramalho, K. Tsushima
We study the transition form factors by applying the covariant spectator quark model. Using the parametrization for the baryon core wave functions as well as for…
Triplet Scalar Dark Matter and Leptogenesis in an Inverse See-Saw Model of Neutrino Mass Generation
Francois-Xavier Josse-Michaux, Emiliano Molinaro
We propose a UV completion of the inverse see-saw scenario using fermion SU(2) triplet representations. Within this framework, a variation of the standard thermal leptogenesis is a…
Background subtraction and jet quenching on jet reconstruction
Liliana Apolinário, Néstor Armesto, Letícia Cunqueiro
In order to assess the ability of jet observables to constrain the characteristics of the medium produced in heavy-ion collisions at the LHC, we investigate the influence of backgr…
Octet baryon electromagnetic form factors in nuclear medium
G. Ramalho, K. Tsushima, A. W. Thomas
We study the octet baryon electromagnetic form factors in nuclear matter using the covariant spectator quark model extended to the nuclear matter regime. The parameters of the mode…
Timelike gamma* N -> Delta form factors and Delta Dalitz decay
G. Ramalho, M. T. Pena
We extend a covariant model, tested before in the spacelike region for the physical and lattice QCD regimes, to a calculation of the gamma* N -> Delta reaction in the timelike regi…