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Three Lectures on Chiral Symmetry
N. D. Hari Dass
In these lectures I cover various aspects of Chiral Symmetry in the hadronic world from a pre-QCD perspective. I also discuss the absence of spontaneous symmetry breaking in d=4 la…
Quantum Chromodynamics and the Z-width
N. D. Hari Dass, V. Soni
We show by explicit construction of an alternative theory for the strong interactions that it cannot be distinguished from QCD by any of the usual precision tests except on extendi…
An Asymptotically Free Extension of QCD and ALEPH Four Jet Events
N. D. Hari Dass, V. Soni
We show that a recently proposed extension of QCD by the addition of a multiplet of scalars transforming as (2,2,1) under provides a n…
Implications of chiral symmetry for scalar isoscalar channel and multi- nucleon forces
Ramesh Anishetty, N. D. Hari Dass, H. S. Sharatchandra
Chiral perturbation theory has to be substantially modified for the problem of nuclear forces. Loop effects dominate over tree level effects. The dominant behaviours in the scalar…