Introduction
This web site is devoted to the timely dissemination of information concerning QCD exotica. As a working definition these comprise Any of these states which share quantum numbers may mix, obscuring the definitions. NB: sometimes states with quantum numbers which are not accessible to q qbar pairs are termed exotic. We call these states quantum number-exotic.

The site is divided into 11 parts one of which is this introduction. (If the above information sounds like Greek, try the popular introduction. This page also contains links to popular accounts of QCD exotica.) The other nine sections are described below.

Experimental Spectrum

The contents of the Particle Data Book are reproduced here in tabular format with links to postscript from the PDG. Links to separate pages for anomalous particles are included.

Visual Spectrum

A database of particle data has been created which will be updated as new information arrives. This is meant to compliment the PDG data in the previous section. The database may be accessed visually via a java applet which creates graphs of selected particle data.

Hybrid Decays

Separating exotica from the conventional spectrum will almost certainly require dynamical information such as decay couplings. An extensive tabulation of the predictions of two hybrid decay models is presented in this section.

Meson Decays

The predictions of the 3P0 model for meson decays are presented in 13 tables. These may be compared to hybrid decay predictions to assist in distinguishing states.

Theory

This section has two portions (1) a summary of different models used to describe exotics and (2) a summary of lattice results.

New Results

Significant new results are summarized in this section.

Annotated Bibliography

The largest portion of the site is devoted to an annotated bibliography of material related to QCD exotica. The majority of these are culled from the Los Alamos preprint database or from Spires. Newer entries have links to postscript at Los Alamos. These will eventually be annotated for ease of reference by the user. Currently, papers are divided into the following categories: A primitive search capability has been added so that all references to an author or keyword in the bibliography may be found.

Other Links

A collection of links to related sites. These are mostly experimental efforts which have some overlap with exotic hadron physics.

Special Functions

As a service to the hadronic physics community, a collection of special functions has been added to the Exotica website. These include:

Contact Information

Responsibility for maintaining the information presented here falls upon the editors. The current editors are T. Barnes (reviews), C.A. Meyer (experiment), C.J. Morningstar (lattice), P.R. Page (phenomenology), and E. Swanson (theory). Users are encouraged to write the appropriate editor to express opinions or submit information.

Future Work