Year: 2024
Type: article
Abstract: We discuss the possibility that the two nearby resonances observed by BESIII partially below the p p ¯ threshold might be due to mixing between two metastable states with the same J P C = 0 − + quantum numbers, but rather different internal structure. One is a p p ¯ hadronic molecule and the other a bound state of a light-quark diquark and an antidiquark, both with spin 1 and isospin 0, a composite color antitriplet and triplet, respectively. The doubling of resonances, one of which may be interpreted as a hadronic molecule, while the other arises from q q ¯ annihilation in a state with vacuum quantum numbers, may be a more general feature than the specific case considered here. Published by the American Physical Society 2024
Authors: Marek Karliner, Jonathan L. Rosner
Institutions: Tel Aviv University, University of Chicago
Language: English
Subfield: Nuclear and High Energy Physics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: hybrid
Award: G3700052416
OpenAlex ID: W4404757893