The X(3872) at the Tevatron

TL;DR

This paper reports on measurements of the X(3872) particle at the Tevatron, focusing on its decay properties and implications for its quantum numbers, including dipion mass spectrum analysis and interference effects.

Contribution

It provides new experimental results on the dipion mass spectrum and decay characteristics of the X(3872), offering insights into its quantum numbers and decay mechanisms.

Findings

Dipions favor J/PsiRho decay mode

C-parity of X is even

Rho-Omega interference effects are observed

Abstract

I report results on the X(3872) from the Tevatron. Mass and other properties have been studied, with a focus on new results on the dipion mass spectrum in X -> J/PsiPi^+Pi^- decays. Dipions favor interpreting the decay as J/PsiRho, implying even C-parity for the X. Modeling uncertainties do not allow distinguishing between S- and P-wave decays of the J/PsiRho mode. Effects of Rho-Omega interference in X decay are also introduced.