2023/06/27 by Wu, Shu-Ming, Wang, Fei, Zou, Bing-Song
#FOS: Physical sciences #High Energy Physics - Phenomenology (hep-ph)
paper · doi:10.48550/arxiv.2306.15385
Based on the high statistical data of the CLAS Collaboration on γp → ϕp reaction in the center-of-mass energy range of 2.2 GeV to 2.8 GeV, we investigate the possible existence of strange molecular partners of Pc states, i.e., N^*(2080) and N^*(2270) as K^*Σ and K^*Σ^* molecular states. In addition to the t-channel Pomeron exchange, t-channel meson exchange including pseudo-scalar meson (π,η), scalar meson (σ, a0(980), f0(980)), axial-vector meson f1(1285), tensor meson f2(1270), as well as s- and u-channel proton exchange, including s-channel N^*(2080) and N^*(2270) states can fit the data very well. The fitted coupling constants of these N^* molecular states to pϕ and γp are consistent with the results directly calculated from the relevant hadronic triangle diagrams of the molecular picture.