Charmonium-like resonances in coupled D D-D_s D_s scattering

2021/11/04 by Saša Prelovšek, Sara Collins, Prelovsek, S. +7
Physics and Astronomy · #Quantum Chromodynamics and Particle Interactions #Cold Atom Physics and Bose-Einstein Condensates #High-Energy Particle Collisions Research

paper · pdf · doi:10.48550/arxiv.2111.02934

Abstract

Charmonium-like resonances and bound states with isospin zero and J^PC=0⁺⁺,~1^--,~2⁺⁺,~3^-- are extracted on the lattice. Coupled D D and D_s D_s scattering suggests three charmonium-like states with J^PC=0⁺⁺ in addition to χ_c0(1P): a so far unobserved D D bound state just below threshold, a conventional resonance likely related to χ_c0(3860)/χ_c0(2P) and a narrow resonance just below the D_s D_s threshold with a large coupling to D_s D_s likely related to X(3915)/χ_c0(3930). One-channel D D scattering renders resonances and bound states with J^PC= 1^--,~2⁺⁺,~3^-- related to the observed conventional charmonia. Lattice QCD ensembles from the CLS consortium with m_π≃ 280 MeV are utilized.

Related

• Charmonium-like states from scattering on the lattice
• Charmonium resonances from 2+1 flavor CLS lattices
• Charmoniumlike resonant explanation on the newly observed X(3960)
• Charmonium-like states with J^P=1⁺ and isospin 1
• D₁ and D₂ resonances in coupled-channel scattering amplitudes from lattice QCD