Canonical interpretation of the newly observed J P = 1 + structure X ( 2085 )
Year: 2024
Type: article
Abstract: Inspired by the newly observed X ( 2085 ) by the BESIII Collaboration, we study the strong decay behaviors of excited axial-vector strange mesons within the quark pair creation model. Our results indicate that the K 1 ( 1793 ) / K 1 ( 1861 ) can be regarded as the same K 1 ( 2 P ) state, and the K 1 ( 1911 ) is assigned as the K 1 ( 2 P ′ ) state. Considering the mass, spin-parity, and decay behaviors, we interpret the newly observed X ( 2085 ) as the radially excited K 1 ( 3 P ) state, which mainly decays into the K * ( 1410 ) π , ρ K * , ω ( 1420 ) K , ρ ( 1450 ) K , and ρ K final states. Also, the width of the K 1 ( 3 P ′ ) state is predicted to be about 300 MeV, which can be searched for by future experiments. We expect that present calculations can help us to better understand the nature of the X ( 2085 ) structure and near-threshold enhancements in the baryon-antibaryon invariant mass distributions. Published by the American Physical Society 2024
Institutions: Hunan University, Henan University, Hunan Normal University
Language: English
Subfield: Nuclear and High Energy Physics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: hybrid
Awards: G2374422610, G5386727197, G7526102084
OpenAlex ID: W4405320050