The X(3872) Meson and "Exotic" Spectroscopy at CDF II

TL;DR

This paper reviews the search for exotic hadrons like pentaquarks and the X(3872) at CDF II, confirming the X(3872) and analyzing its production and decay, while finding no evidence for other exotic states.

Contribution

It provides the first confirmation of the X(3872) at CDF and examines its properties, while reporting null results for other exotic hadron searches.

Findings

Confirmed the X(3872) at CDF

No evidence for pentaquarks or exotic D_{sJ}-states

Analyzed the production and decay of X(3872)

Abstract

A spate of remarkable new hadrons reported in 2003 may lead to unequivocal proof of states beyond conventional $q\bar{q}$ and $qqq$ structure. Claimed baryonic states Theta+, Phi, and Theta^0_c would consist of five quarks, and new D_{sJ}-states and/or X(3872) might contain four quarks. I review efforts to search for and study this ``new'' spectroscopy in pbarp-collisions with the CDF II detector. Pentaquark searches are negative, and no evidence for exotic analogs of D_{sJ}-states was found. CDF has confirmed the X(3872). My main focus is the production and decay properties of the X(3872), and its possible interpretations. (Contains Copyrighted material, Readers may view, browse, and/or download material for temporary copying purposes only, provided these uses are for noncomercial personal purposes. Execpt as provided by law, this material may not be further reproduced, distributed, transmitted, modified, adapted, performed, displayed, published, or sold in whole or part, without written permission from the publisher.)