Fermions, Anomaly and Unitarity in High-Energy Electroweak Scattering

  title={Fermions, Anomaly and Unitarity in High-Energy Electroweak Scattering},
  author={Riccardo Guida and Kenichi Konishi and Nicodemo Magnoli},
  journal={arXiv: High Energy Physics - Phenomenology},
We report the "state of the art" of the problem of $B+L$ violation in high-energy electroweak scatterings. Results of various analyses point toward (though do not prove rigorously yet) the "half-suppression", i.e., that the $B+L$ violating cross section remains suppressed at least by the negative exponent of the single instanton action, at all energies. Most interesting techniques developed in this field are reviewed. Particular attention is paid to unitarity constraints on the anomalous… 
B+L violation at colliders and new physics
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Impact of new physics on B + L violation at colliders
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Electroweak baryon number non-conservation in the early Universe and in high-energy collisions
We review recent progress in the study of the anomalous baryon number non-conservation at high temperatures and in high energy collisions. Recent results on high temperature phase transitions are
An upper bound on the total cross-section for electroweak baryon number violation
An upper bound on the total cross-section of s-wave electroweak instanton/sphaleron induced baryon plus lepton number violating processes is presented. It is obtained by exploiting a recently
Electroweak instantons/sphalerons at VLHC?
There is a close analogy between electroweak instanton-induced baryon plus lepton number (B + L) violating processes in Quantum Flavor Dynamics (QFD) and hard QCD instanton-induced chirality
Band structure in Yang-Mills theories
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Instanton calculations in QCD are generically plagued by infrared divergencies associated with the integration over the instanton size ϱ. Here, we demonstrate explicitly that the typical inverse hard
Electroweak instantons as a solution to the ultrahigh-energy cosmic ray puzzle
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The Whys of Subnuclear Physics
In the last few years an impressive series of spectacular results have been obtained in high-energy physics: notably, the discoveries of the neutral weak currents, of the new particles (J,ψ’s), of
Multi-W(Z) Production in High-Energy Collisions?
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An example of semiclassical instanton-like scattering: (1 + 1)-dimensional sigma model
Abstract A solution to the classical field equations in the massless (1 + 1)-dimensional O(3) sigma model is found, which describes a multiparticle instanton-like transition at high energy. In the
Large Order Behaviour of Perturbation Theory
Introduction. References. Papers: 1. Methods and Simple Examples. 2. More Complex Systems. 3. Field Theories with Fermions. 4. Large-Order Behaviour: Difficulties, Applications. 5. Additional
Gauge fields, introduction to quantum theory
* Introduction: Fundamentals of Classical Gauge Field Theory * Quantum Theory in Terms of Path Integrals * Quantization of the Yang-Mills Field * Renormalization of Gauge Theories * Some Application
Quantum mechanics: Non-relativistic theory,
The basic concepts of quantum mechanics Energy and momentum Schrodinger's equation Angular momentum Perturbation theory Spin The identity of particles The atom The theory of symmetry Polyatomic
Table of Integrals, Series, and Products
Introduction. Elementary Functions. Indefinite Integrals of Elementary Functions. Definite Integrals of Elementary Functions. Indefinite Integrals of Special Functions. Definite Integrals of Special
  • Washington preprint, UW/PT-91-12
  • 1991
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