Jump to ContentJump to Main Navigation
Particle Physics in the LHC Era$
Users without a subscription are not able to see the full content.

Giles Barr, Robin Devenish, Roman Walczak, and Tony Weidberg

Print publication date: 2016

Print ISBN-13: 9780198748557

Published to Oxford Scholarship Online: March 2016

DOI: 10.1093/acprof:oso/9780198748557.001.0001

Show Summary Details
Page of

PRINTED FROM OXFORD SCHOLARSHIP ONLINE (oxford.universitypressscholarship.com). (c) Copyright Oxford University Press, 2021. All Rights Reserved. An individual user may print out a PDF of a single chapter of a monograph in OSO for personal use. date: 16 September 2021

Weak interactions

Weak interactions

(p.181) 7 Weak interactions
Particle Physics in the LHC Era

G. Barr

R. Devenish

R. Walczak

T. Weidberg

Oxford University Press

This chapter starts with a recap of both the weak interaction model from Fermi’s theory of beta decay (with no spin) and the pictorial way of understanding interactions using Feynman diagrams. An introduction is given to both this use of Feynman diagrams and the formal method of calculating matrix elements with Feynman rules. The weak interaction is then considered using the Dirac equation to include spin-half fermion effects, using the decay of the tau lepton as an example. Weak interactions with quarks, including Cabibbo mixing, the Glashow–Iliopoulos–Maiani (GIM) mechanism, and the Cabibbo–Kobayashi–Maskawa (CKM) matrix, are then covered. The chapter then gives a step-by-step approach to the unification of the electromagnetic and weak forces in the Glashow–Salam–Weinberg (GSW) model of electroweak unification, leading to the predictions of the Standard Model on the properties of the weak neutral current and to the existence of W and Z bosons.

Keywords:   weak interaction, electroweak, unification, Cabibbo–Kobayashi–Maskawa matrix, Glashow–Iliopoulos–Maiani mechanism, Z boson, Standard Model, Glashow–Salam–Weinberg model

Oxford Scholarship Online requires a subscription or purchase to access the full text of books within the service. Public users can however freely search the site and view the abstracts and keywords for each book and chapter.

Please, subscribe or login to access full text content.

If you think you should have access to this title, please contact your librarian.

To troubleshoot, please check our FAQs , and if you can't find the answer there, please contact us .