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7 papers · 2 filters
to One Loop in Chiral Perturbation Theory
P. Talavera, Ll. Ametller, J. Bijnens +2
The and amplitudes are discussed in the general context of Chiral Perturbation Theory (ChPT) to . Chiral loops are found to play a m…
CP violation in multi-Higgs supersymmetric models
Manuel Masip, Andrija Rasin
We consider supersymmetric extensions of the standard model with two pairs of Higgs doublets. We study the possibility of spontaneous violation in these scenarios and present…
Physical Parameters and Renormalization of U(1)_a x U(1)_b Models
F. del Aguila, M. Masip, M. Perez-Victoria
We analize the structure of models with unbroken and spontaneously broken U(1)_a x U(1)_b gauge symmetry. We show that the quantum corrections to the 2N gauge charges, with N = #fe…
Spontaneous CP violation in supersymmetric models with four higgs doublets
Manuel Masip, Andrija Rasin
We consider supersymmetric extensions of the standard model with two pairs of Higgs doublets. We study the possibility that CP violation is generated spontaneously in the scalar se…
CP violation in the lepton sector with Majorana neutrinos
F. del Aguila, M. Zrałek
We study CP violation in the lepton sector in extended models with right-handed neutrinos, without and with left-right symmetry, and with arbitrary mass terms. We find the conditio…
TAU-PAIR PRODUCTION VIA PHOTON-PHOTON COLLISIONS AT LEP
Fernando Cornet, Jose I. Illana
We point out that the cross-section for the process at LEP is large enough to allow for a study of the anomalous electromagnetic couplings of the …