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41 papers · 2 filters
Flavour models for TM1 lepton mixing
Ivo de Medeiros Varzielas, Luís Lavoura
We present a framework for lepton flavour models such that the first column of the lepton mixing matrix is (2,-1,-1)/sqrt(6). We show that the flavour symmetry group adequate for t…
X(3872) is not a true molecule
Susana Coito, George Rupp, Eef van Beveren
A solvable coordinate-space model is employed to study the component of the X(3872) wave function, by coupling a confined state to the almost unbound…
Evading death by vacuum
A. Barroso, P. M. Ferreira, I. P. Ivanov +2
In the Standard Model, the Higgs potential allows only one minimum at tree-level. But the open possibility that there might be two scalar doublets enriches the vacuum structure, al…
Observing Higgs boson production through its decay into gamma-rays: A messenger for Dark Matter candidates
Nicolas Bernal, Celine Boehm, Sergio Palomares-Ruiz +2
In this Letter, we study the gamma-ray signatures subsequent to the production of a Higgs boson in space by dark matter annihilations. We investigate the cases where the Higgs boso…
An analysis of the influence of background subtraction and quenching on jet observables in heavy-ion collisions
Liliana Apolinário, Néstor Armesto, Leticia Cunqueiro
Subtraction of the large background in reconstruction is a key ingredient in jet studies in high-energy heavy-ion collisions at RHIC and the LHC. Here we address the question to wh…
Invariants and Flavour in the General Two-Higgs Doublet Model
F. J. Botella, G. C. Branco, M. N. Rebelo
The flavour structure of the general Two Higgs Doublet Model (2HDM) is analysed and a detailed study of the parameter space is presented, showing that flavour mixing in the 2HDM ca…