Study on X(3872) from effective field theory with pion exchange interaction

2013/04/03 by P. Wang, X. G. Wang, Wang, P. +1
Chemistry · Physics and Astronomy · #Advanced NMR Techniques and Applications #Atomic and Subatomic Physics Research #FOS: Physical sciences #High Energy Physics - Phenomenology (hep-ph) #Quantum Chromodynamics and Particle Interactions

paper · pdf · doi:10.48550/arxiv.1304.0846

openalex publication_date 2013/04/03 · openalex created_date 2019/06/27 · openalex updated_date 2026/08/01

Abstract

We study DD^* (D^*D) scattering in the framework of unitarized heavy meson chiral perturbation theory with pion exchange and a contact interaction. ³S₁-³D₁ mixing effects are taken into account. A loosely bound state X(3872), with the pole position being M_pole=(3871.70-i0.39)MeV, is found. The result is not sensitive to the strength of the contact interaction. Our calculation provides a theoretical confirmation of the existence of the 1⁺⁺ state X(3872). The light quark mass dependence of the pole position indicates it has a predominately DD^* (D^*D) molecular nature. When the π mass is larger than 142 MeV, the pole disappears which makes impossible the lattice simulation of this state at large quark mass.

Related

• Internal structure of the T_cc(3875)⁺ from its light-quark mass dependence
• Long-distance structure of the X(3872)
• Analysis of X(3872) production via Heavy-Meson Effective Theory
• Interactions between two heavy mesons within heavy meson chiral effective field theory
• Quark mass dependence of the T_cc(3875)⁺ pole