researchers with a paper here

Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.

collaborating institutions
Showing 1998 · hep-phShow all

10 papers · 2 filters

hep-ph1998★ 19 cited

The Effective Electroweak Chiral Lagrangian: The Matter Sector

Emili Bagan, Domenec Espriu, Julian Manzano

We parametrize in a model-independent way possible departures from the minimal Standard Model predictions in the matter sector. We only assume the symmetry breaking pattern of the…

hep-ph1998★ 121 cited

Constraints on top couplings in models with exotic quarks

F. del Aguila, J. A. Aguilar-Saavedra, R. Miquel

The extension of the Standard Model with exotic quark singlets and doublets introduces large flavor changing neutral couplings between ordinary fermions. We derive inequalities whi…

hep-ph1998★ 12 cited

Matching of U_L(3) x U_R(3) and SU_L(3) x SU_R(3) Chiral Perturbation Theories

P. Herrera-Siklódy

The heavy singlet field is integrated out from the U_L(3) x U_R(3) Chiral Perturbation Theory and it is shown how its effects on the low-energy dynamics are reduced to effective ve…

hep-ph1998★ 2 cited

Dynamical symmetry restoration for a higher-derivative four-fermion model in an external electromagnetic field

E. Elizalde, S. P. Gavrilov, S. D. Odintsov +1

A four-fermion model with additional higher-derivative terms is investigated in an external electromagnetic field. The effective potential in the leading order of large-N expansion…

hep-ph1998★ 6 cited

The Electromagnetic Mass Difference of Pions at Low Temperature

C. Manuel, N. Rius

We compute low temperature corrections to the electromagnetic mass difference of pions in the chiral limit. The computation is done in a model independent way in the framework of c…

hep-ph1998★ 131 cited

Potential NRQED: The Positronium Case

A. Pineda, J. Soto

We discuss in detail potential NRQED (pNRQED), a previously proposed effective field theory for ultrasoft photons. The pNRQED lagrangian for the equal mass case is presented and it…

hep-ph1998★ 45 cited

The Extended Chiral Quark Model and QCD

A. A. Andrianov, D. Espriu, R. Tarrach

We consider the low energy effective action of QCD below the chiral symmetry breaking scale, including, in Wilson's spirit, all operators of dimensionality less or equal to 6 which…

hep-ph1998★ 94 cited

Patterns of Lorentz symmetry breaking in QED by CPT-odd interaction

A. A. Andrianov, R. Soldati

A tiny Lorentz symmetry breaking can be mediated in Electrodynamics by means of the Chern-Simons (CS) interaction polarized along a constant CS vector. Its presence makes the vacuu…

hep-ph1998★ 86 cited

Matching at one loop for the four-quark operators in NRQCD

A. Pineda, J. Soto

The matching coefficients for the four-quark operators in NRQCD (NRQED) are calculated at one loop using dimensional regularization for ultraviolet and infrared divergences. The ma…

hep-ph1998★ 5 cited

On the Thermal Gauge Boson Masses of the Electroweak Theory in the Broken Phase

Cristina Manuel

Thermal effects in the broken phase of the electroweak theory are studied in the strongly interacting Higgs boson limit. In that limit and at tree level the bosonic sector of the t…