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23 papers · 2 filters
Chiral Symmetry Breaking From Dyson-Schwinger Equations
J. R. Cudell
I report on recent progress in the study of mass generation in non-abelian gauge theories, and concentrate on the origin of constituent masses in QCD. I argue that a consistent for…
The Effective Use of Precision Electroweak Measurements
C. P. Burgess
Several reasonably model-independent formulations of the implications of new physics for precision electroweak measurements have been developed over the past years, most notably by…
Renormalization of four-quark operators, effective theory, and the role of evanescent operators
Kassa Adel, York-Peng Yao
We present, in the context of dimensional regularization, a prescription to renormalize Feynman diagrams with an arbitrary number of external fermions. This prescription, which is…
Heavy Sterile Neutrinos and Neutrinoless Double Beta Decay
P. Bamert, C. P. Burgess, R. N. Mohapatra
We investigate the possibility of producing neutrinoless double beta decay without having an electron neutrino with a mass in the vicinity of 1 eV. We do so by having a much lighte…
The Quark Propagator from the Dyson-Schwinger Equations: I. the Chiral Solution
J. R. Cudell, A. J. Gentles, D. A. Ross
Within the framework of the Dyson-Schwinger equations in the axial gauge, we study the effect that non-perturbative glue has on the quark propagator. We show that Ward-Takahashi id…
Negative s and Light New Physics
P. Bamert, C. P. Burgess
Motivated by the difference between SLD's recent measurement of ALR and the corresponding LEP results, we explore which kinds of new particles can (1) contribute dominantly to new…