Symmetries in Elementary Particle Physics

Symmetries in Elementary Particle Physics

1964 International School of Physics Ettore Majorana, a CERN-MPI-NATO Advanced Study Institute

1st Edition - January 1, 1965

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  • Editor: A Zichichi
  • eBook ISBN: 9781483261812

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Symmetries in Elementary Particle Physics focuses on the processes, methodologies, advancements, and reactions in elementary particle physics. The selection first offers information on symmetry principles in particle physics and vector and axial currents under first order symmetry breaking. Discussions focus on restrictions following from charge conjugation; non-renormalization theorem for the vector current octet; second class amplitudes for leptonic decays; and discrete symmetry operations. The text then takes a look at methods for assigning spin and parity to baryon resonances and general review of neutrino physics. The publication examines momentum spectrum of positrons from muon decay and the status of strong electromagnetic and weak interactions. Topics include basic physics, conservation laws, question of dynamics, and existential questions. The selection is a dependable reference for readers interested in the symmetries in elementary particle physics.

Table of Contents

  • Table of Contents

    Opening Speech

    "La fisica ed il progresso del pensiero scientifico attraverso i secoli"


    Symmetry Principles in Particle Physics

    I: Invariance in Quantum Theory

    II: Discrete Symmetry Operations

    III: The Yang-Mills Field


    Elements of SU4

    I: Introduction and Basic Ideas

    II: Properties of SU3 Representations

    III: Degeneracy and Tensorial Methods

    IV: The Matrices for Baryons and Mesons and Yukawa Couplings

    V: The Mass Formula: Medium Strong Splittings

    VI: The Electromagnetic Mass Splittings

    VII: Decimet Decay Widths and Summary


    Consequences of SU3 Symmetry in Weak Interactions

    1st Lecture

    2nd Lecture

    3rd Lecture

    4th Lecture

    5th Lecture

    6th Lecture

    Vector and Axial Currents Under First Order Symmetry Breaking

    I: The Current Octets

    II: First Class and Second Class Amplitudes

    III: Charge Conjugation on an Octet

    IV: First Order Symmetry Breaking

    V: Restrictions Following From Charge Conjugation

    VI: First Class Covariants

    VII: Second Class Covariants

    VIII: First Class Amplitudes For Leptonic Decays

    IX: Second Class Amplitudes For Leptonic Decays

    X: Electromagnetic Amplitudes

    XI: A Non-Renormalization Theorem for the Vector Current Octet

    XII: Bosons

    XIII: Currents with Indefinite Charge Conjugation


    Fractionally Charged Particles and SU6

    I: The Sakata Model and its Modification

    II : The Ace Model

    III : A Symmetry Higher than SU3



    I Representations of SU4

    II Mass Formulae

    III Weak Interactions


    Some Properties of the Sun Representation

    Suggested Bibliography

    Possible Consequences of the K2°→π+π‾ Decay

    I: Phenomenology of K decays (an Outline)

    II: The K° - K° System

    III: Are KO's an Isolated System?

    IV CP Violation in K2° Decays

    V: CP Violation in Weak Interactions, Leptonic Decays

    Appendix - CP Invariance and SU3



    Methods for Assigning Spin and Parity to Baryon Resonances

    I: Determination of the Spin And Parity of Baryon Resonances. Method of Byers and Fenster

    II: Decay From A Statistical Mixture of Spin States; Density Matrices For Y* and Y

    III: Intensity Distribution

    IV: Angular Distribution of the Polarization of Y

    V: Lorentz Frames in Which to Measure The Decay of Y* and Y

    VI: Restrictions on the TLM

    VII: Summary of Procedure For Spin Parity Determination

    VIII: Background Interference


    General Review of Neutrino Physics

    Separation of Events Into Elastic

    And Inelastic

    Recognition of Elastic Events

    The Inelastic Events

    To What Level Can We Say that ѵμ≠ѵe

    Neutral Currents

    W-.Intermediate Vector Bosons


    Future Experiments in Neutrino Physics

    Measurement of the Angular Correlation of Electrons Relative to λ Spin in λ°-ẞ Decay

    Momentum Spectrum of Positrons From Muon Decay


    Discussion I

    Discussion II

    Discussion III

    Discussion IV

    Discussion V

    Discussion VI

    Closing Lecture

    Present Status of Strong Electromagnetic and Weak Interactions

    I: Basic Physics

    II: Conservation Laws

    III: Existential Questions

    IV: The Question of Dynamics

    V: Advice for the Future

    List of Participants

Product details

  • No. of pages: 442
  • Language: English
  • Copyright: © Academic Press 1965
  • Published: January 1, 1965
  • Imprint: Academic Press
  • eBook ISBN: 9781483261812

About the Editor

A Zichichi

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