Strong Couplings of X(3872)_{J=1,2} and a New Look at J/psi Suppression in Heavy Ion Collisions

TL;DR

This paper calculates the strong couplings of the X(3872) particle for different quantum states and uses these to refine the understanding of J/psi suppression in heavy ion collisions, providing insights into quark-gluon plasma behavior.

Contribution

It introduces new calculations of X(3872) couplings for J^{PC}=1^{++} and 2^{-+} states and applies these to improve J/psi suppression models in heavy ion collisions.

Findings

Refined cross sections for J/psi scattering into D Dbar*

Updated J/psi absorption estimates in hot hadron gas

Comparison with recent RHIC experimental data

Abstract

We define and compute from data the strong couplings of the X(3872) with both of the possible quantum numbers assignments J^{PC}=1^{++},2^{-+}. We use these to compute cross sections for J/psi resonance scattering into D Dbar*. As an application of the results obtained we revise the calculation of the J/psi absorption in a hot hadron gas to confront with recent RHIC observations in Au-Au collisions.