Charmonium content of χc1(3872) in light-cone sum rules at twist 3

AKAN T., Olpak M. A., ÖZPİNECİ A.

EUROPEAN PHYSICAL JOURNAL C, vol.85, no.10, 2025 (SCI-Expanded, Scopus) identifier identifier

  • Publication Type: Article / Article
  • Volume: 85 Issue: 10
  • Publication Date: 2025
  • Doi Number: 10.1140/epjc/s10052-025-14795-6
  • Journal Name: EUROPEAN PHYSICAL JOURNAL C
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier, Aerospace Database, Chemical Abstracts Core, Communication Abstracts, INSPEC, zbMATH, Directory of Open Access Journals, Nature Index
  • Middle East Technical University Affiliated: Yes

Abstract

In this study, we utilize light-cone QCD sum rules at twist-3 accuracy to compute the coupling parameters of the chi c1(2P) state with D and D* mesons. The analysis reveals that the observed chi c1(3872) meson incorporates significant amounts of both charmonium and molecular components. The interplay between these components highlights the exotic nature of chi c1(3872). Furthermore, implications for a possible mixing between the chi b1(2P) state and a potential BB* molecule is discussed. These findings contribute to the understanding of exotic hadron states and their intricate internal structures.