18.1k citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- University of LisbonPT1.3k papers
- Universidade Técnica de LisboaPT388 papers
- Centre National de la Recherche ScientifiqueFR326 papers
- Instituto de Plasmas e Fusão NuclearPT209 papers
- European Organization for Nuclear ResearchCH202 papers
- Centro de Física Teórica de Partículas201 papers
- Instituto Politécnico de LisboaPT190 papers
- Instituto de TelecomunicaçõesPT175 papers
- Universitat de ValènciaES175 papers
- Institut National de Physique Nucléaire et de Physique des ParticulesFR143 papers
- Centro de Astrofísica e GravitaçãoPT133 papers
- LIP - Laboratory of Instrumentation and Experimental Particle PhysicsPT133 papers
14 papers · 2 filters
Neutrino Magnetic Moment Upper Bound From Solar Neutrino Observations
Joao Pulido, Ana M. Mourao
Using the data from SuperKamiokande, Kamiokande and Homestake solar neutrino experiments we derive an upper bound on the magnetic moment of the neutrino and find $μ_{ν_e}\leq(2.2-2…
Borexino as a test of solar matter density fluctuations
H. Nunokawa, A. Rossi, V. Semikoz +1
This talk summarizes some results of our recent work focusing on the possibility to test solar matter density fluctuations by the future Borexino experiment.
Bounds on sterile neutrino mixing for cosmologically interesting mass range
H. Nunokawa, J. T. Peltoniemi, A. Rossi +1
This talk summarizes our recent work which studied the impact of resonant and ( is a sterile neutrino) conversions on supernova physics, under…
How sensitive to FCNC can CP asymmetries be?
G. Barenboim, F. J. Botella, G. C. Branco +1
We show that the study of CP asymmetries in neutral B-meson decays provides a very sensitive probe of flavour-changing neutral currents (FCNC). We introduce two new angles, $α_{SM}…
Minimal Supergravity with R-Parity Breaking
Marco A. Diaz, Jorge C. Romao, Jose W. F. Valle
We show that the minimal R-parity breaking model characterized by an effective bilinear violation of R-parity in the superpotential is consistent with minimal N=1 supergravity unif…
Modelling quark distribution and fragmentation functions
R. Jakob, P. J. Mulders, J. Rodrigues
The representation of quark distribution and fragmentation functions in terms of non-local operators is combined with a simple spectator model. This allows us to estimate these fun…
Comments on Neutrino Tests of Special Relativity
S. L. Glashow, A. Halprin, P. I. Krastev +2
We point out that the assumption of Lorentz noninvariance examined recently by Coleman and Glashow leads to neutrino flavor oscillations which are phenomenologically equivalent to…
The top quark mass and flavor mixing in a Seesaw model of Quark Masses
T. Morozumi, T. Satou, M. N. Rebelo +1
The top quark mass and the flavor mixing are studied in the context of a Seesaw model of Quark Masses based on the gauge group . Six isosinglet…
Spontaneous Chiral Symmetry Breaking Beyond BCS
P. Bicudo
At the BCS level of chiral symmetry breaking, the mass gap equation for quark-antiquark condensation only uses the kernel of the Bethe-Salpeter equation. We introduce coupled chann…
CP violation from new quarks in the chiral limit
F. del Aguila, J. A. Aguilar-Saavedra, G. C. Branco
We characterize CP violation in the SU(2)xU(1) model due to an extra vector-like quark or sequential family, giving special emphasis to the chiral limit m_{u,d,s}=0. In this limit,…
Quark Distribution Functions in a Diquark Spectator Model
P. J. Mulders, J. Rodrigues
The representation of quark distribution functions in terms of nonlocal operators is combined with a simple diquark spectator model. This allows us to estimate these functions for…
Effects of Non-Standard Tri-linear Couplings in Photon-Photon Collisions: I.
M. Baillargeon, G. Bélanger, F. Boudjema
The effect of anomalous couplings in is studied for different energies of the mode of the next linear collider. The analysis based on the maximum likelihood me…
Semi-leptonic four-fermion final states in polarised γγreactions: Exact results vs an improved narrow width approximation
M. Baillargeon, G. Bélanger, F. Boudjema
We calculate the process with the full set of Feynman diagrams. We consider different implementations of the width and different combinati…
A new type of spontaneous CP breaking
L. Lavoura
I present a new form of spontaneous CP violation in which, in analogy with the left-right-symmetric model, CP breaking results from the inequality of two real vacuum expectation va…