Chiral perturbation theory to one loop
J. Gasser,Heinrich Leutwyler +1 more
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TLDR
In this article, the low energy representation of several Green's functions and form factors and of the na scattering amplitude are calculated in terms of a few constants, which may be identified with the coupling constants of a unique effective low energy Lagrangian.About:
This article is published in Annals of Physics.The article was published on 1984-11-01 and is currently open access. It has received 3277 citations till now. The article focuses on the topics: Pion decay constant & Chiral perturbation theory.read more
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Chiral Perturbation Theory: Expansions in the Mass of the Strange Quark
Jürg Gasser,Heinrich Leutwyler +1 more
TL;DR: In this paper, the authors construct the generating functional of U(3)×U(3), which allows them to calculate the Green functions up to and including terms of order p4 (at fixed radio m quark p 2 ) in terms of a few coupling constants which chiral symmetry leaves undetermined.
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Event generation with SHERPA 1.1
Tanju Gleisberg,Stefan Höche,Frank Krauss,Marek Schönherr,Steffen Schumann,Frank Siegert,J. Winter +6 more
TL;DR: Sherpa as mentioned in this paper is a general-purpose tool for the simulation of particle collisions at high-energy colliders and contains a very flexible tree-level matrix-element generator for the calculation of hard scattering processes within the Standard Model and various new physics models.
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Estimation of oblique electroweak corrections
Michael E. Peskin,Tatsu Takeuchi +1 more
TL;DR: The experimental limits placed on the oblique correction parameters S and T are reviewed and the value of S can be estimated for running and walking technicolor theories are discussed.
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Event generation with SHERPA 1.1
T. Gleisberg,Stefan Hoeche,Frank Krauss,Marek Schoenherr,Steffen Schumann,Frank Siegert,J. Winter +6 more
TL;DR: Sherpa as discussed by the authors is a general-purpose tool for the simulation of particle collisions at high-energy colliders and contains a very flexible tree-level matrix-element generator for the calculation of hard scattering processes within the Standard Model and various new physics models.
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Modern theory of nuclear forces
TL;DR: In this article, the nuclear forces can be derived using effective chiral Lagrangians consistent with the symmetries of QCD, and the status of the calculations for two and three nucleon forces and their applications in few-nucleon systems are reviewed.
References
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Some Features of Chiral Symmetry Breaking
TL;DR: In this article, it was shown that the rate for symmetry breaking in weak interactions should be suppressed by a factor of at most 4.4 in the case of strong interactions, and that the effect is much too large to be at all related to that seen in weak interaction.
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Computer estimates of meson masses in SU (2) lattice gauge theory
TL;DR: In this article, it was shown that in an SU(2) lattice gauge theory, in the approximation where internal quark closed loops are neglected, chiral symmetry is broken.
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Spectral function sum rules in quantum chromodynamics: (I). Charged currents sector
TL;DR: In this article, the Weinberg sum rules of the algebra of currents are reconsidered in the light of quantum chromodynamics (QCD), and new finite-energy sum rules are derived which replace the old Weinberg sums rules.
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Low energy theorems as precision tests of QCD
J. Gasser,H. Leutwyler +1 more
TL;DR: In this paper, the authors work out the low energy expansion of ππ-scattering amplitude with a method proposed in the preceeding paper using the measured D-waves as an input.
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Anomalies of the axial-vector current.
Roman Jackiw,Keith A. Johnson +1 more
TL;DR: In this paper, it is shown that it is impossible in perturbation theory to maintain minimality of electromagnetic interactions, gauge invariance, and partial conservation of axial-vector current (PCAC).