2021/12/20 by Hao Xu · 7 citations
Physics and Astronomy · #Charm (quantum number) #High-Energy Particle Collisions Research #Meson #Order (exchange) #Particle physics #Particle physics theoretical and experimental studies #Physics #Quantum Chromodynamics and Particle Interactions #hep-lat #hep-ph #nucl-th
paper · pdf · open access · doi:10.1103/physrevd.105.034013
published in Physical review. D/Physical review. D. 105(3) (American Physical Society) · 13 pages, 4 tables and 8 figures
arxiv created 2021/12/20 · openalex publication_date 2022/02/15 · openalex created_date 2022/02/24 · arxiv updated 2022/03/02 · openalex updated_date 2026/08/05
We study the chiral interactions of the hidden charm DD^* system within chiral effective field theory. Chiral Lagrangians are constructed by incorporating the chiral symmetry, heavy quark symmetry as well as proper charge conjugation properties of the heavy mesons. The interacting potentials of the S-wave DD^* are calculated up to second chiral order at 1-loop level, where complete two-pion exchange interactions are included. We further investigate the behaviors of the potentials in coordinate space, as well as their bound state properties. Our studies indicate that there exists a interacting strength ordering among considered four channels: str.[0+(1++)]>str.[0-(1+-)] > str.[1+(1+-)] > str.[1-(1++)] where str. stands for the strength of the DD^* interaction. Moreover, we find that X(3872) can be treated as a good candidate of 0+(1++) molecular state. There also tends to form 0-(1+-) and 1+(1+-) molecular states and we expect the experiments to search for the predicted multi-structures around the DD^* mass region.