WeakInteraction 2006-05-19 12:53:06 2006-05-19 13:01:11 Definition % this is the default PlanetPhysics preamble. as your knowledge % of TeX increases, you will probably want to edit this, but % it should be fine as is for beginners. % almost certainly you want these \usepackage{amssymb} \usepackage{amsmath} \usepackage{amsfonts} % used for TeXing text within eps files %\usepackage{psfrag} % need this for including graphics (\includegraphics) %\usepackage{graphicx} % for neatly defining theorems and propositions %\usepackage{amsthm} % making logically defined graphics %\usepackage{xypic} % there are many more packages, add them here as you need them % define commands here Weak interaction (Weak Force) is one of the 4 know interaction in physics. It's only stronger than gravitational force, but the range over which weak interaction occurs is very small (10^-18 m) thus making it's effect even harder to detect. Weak interaction involves all of the left-handed leptons and quarks. Main carriers of weak interaction are W and Z bosons. Weak interaction is the only interaction that viloates parity and changes flavours. This interaction is responsible for beta decay process and thus is part of a lot of naturally occuring radiation processes.