389 citations · 5.7k across the 222 of their papers we have counts for
6 papers · 1 filter
The Pion-Nucleon Sigma Term and the Goldberger-Treiman Discrepancy
James V. Steele, Hidenaga Yamagishi, Ismail Zahed
The pion-nucleon sigma term is shown to be equal to the Goldberger-Treiman discrepancy at tree level. Its value estimated this way is very sensitive to the pion-nucleon coupling co…
Master Formula Approach to processes
S. Chernyshev, I. Zahed
We analyze the and reactions using the master formula approach to chiral symmetry breaking. The pertinent vacuum correlators are estimated at tree lev…
Heavy Hadrons and QCD Instantons
S. Chernyshev, M. A. Nowak, I. Zahed
Heavy hadrons are analyzed in a random and dilute gas of instantons. We derive the instanton-induced interactions between heavy and light quarks at next to leading order in the hea…
BRST Quantization, Strong CP Violation, the U(1) Problem and Vacua
Hidenaga Yamagishi, Ismail Zahed
The non-perturbative implications of BRST quantization are examined for vacua and related issues. Strong CP violation is shown to be absent for QCD in the BRST formalism. Previ…
General Correlation Functions in the Schwinger Model at Zero and Finite Temperature
James V. Steele, Ajay Subramanian, Ismail Zahed
The general correlations between massless fermions are calculated in the Schwinger model at arbitrary temperature. The zero temperature calculations on the plane are reviewed and c…
A MASTER FORMULA FOR CHIRAL SYMMETRY BREAKING
HIDENAGA YAMAGISHI, ISMAIL ZAHED
We derive a master formula for chiral breaking, based on the Veltman-Bell equations and the Peierls-Dyson relation. Our approach does not rely on the use of the…