HELP

This article is presented as a series of windows, each containing several frames:

this, the LEFT BODY frame (text frame)
the RIGHT BODY frame (index/graphic frame)
a HEADER frame (above this) containing the name of the active window and navigation buttons,
FOOTER frame(s) that are informational in nature.

It is best viewed in a full screen mode, with tool bars hidden, so as to maximize the viewable area. The frames can be resized by dragging borders to allow for more or less text to be displayed.

Clicking the PREV and NEXT buttons above will always activate the windows for the previous and next sections of the article, respectively.
Clicking on highlighted text in a LEFT BODY frame will cause the appropriate graphic, equation or table to be displayed in the RIGHT BODY frame.
Clicking on a graphic, equation or table in the RIGHT BODY frame will cause the first text reference to that graphic, equation or table to be displayed in the LEFT BODY frame.
Clicking the PREV and NEXT buttons in the RIGHT BODY frame will cause next table, equation or graphic in that series to be displayed in the RIGHT BODY frame and the first text reference to that new graphic, equation or table to be displayed in the LEFT BODY frame.
Clicking on index items will cause the appropriate window of the article ro be activated.
When any window other than the HELP window is active, clicking the INDEX button above will cause the index of this article to be displayed in the RIGHT BODY frame.
When the HELP window is active, clicking the INDEX button above will cause the parent window index to be activated.

In text, anti-particles (usually decorated with only an overbar) are decorated both in red and with an overbar (K⁰ for the anti-K⁰ and n for an anti-n), because some browsers cannot easily display an overbar. Your browser must support the FONT FACE: "symbol" so that Greek particle identifiers are properly displayed in text and tables.