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6 papers · 2 filters
Physics Beyond the Standard Model at HERA
Fernando Cornet, Javier Rico
This talk is divided in two parts. In the first one we discuss the signals of the Minimal Supersymmetric Standard Model through the production of \tilde{e} \tilde{q}. The second pa…
Contact terms in charged current processes at HERA
Fernando Cornet, Javier Rico
We obtain bounds on the mass scales characterizing four-fermion contact interactions in charged current processes. The bounds arise from the Q^2 and x distributions in the processe…
m_u + m_d from QCD-Hadron Duality
Joaquim Prades
The value of the light quark masses combination is analized using QCD-Hadron Duality. A detailed analysis of both the perturbative QCD [to four-loops] and the hadronic…
Measure of the size of CP violation in extended models
J. A. Aguilar-Saavedra
In this letter we introduce a possible measure of the size of CP violation in the Standard Model and its extensions, based on quantities invariant under the change of weak quark ba…
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,…
Supergravity corrections to in differential renormalization
F. del Aguila, A. Culatti, R. Munoz-Tapia +1
The method of differential renormalization is extended to the calculation of the one-loop graviton and gravitino corrections to in unbroken supergravity. Rewriting the si…