APS » Journals » Phys. Rev. C » Accepted Papers » Combined analysis of $\eta\prime$ production reactions: $\gamma N \rightarrow \eta\prime N$, $NN \rightarrow NN\eta\prime$, and $\pi N \rightarrow \eta\prime N$

Combined analysis of \eta\prime production reactions: \gamma N \rightarrow \eta\prime N, NN \rightarrow NN\eta\prime, and \pi N \rightarrow \eta\prime N

Accepted

The production of h mesons in photon- and hadron-induced reactions has been revisited in view of the recent additions of high-precision data to the world data base. Based on an effective Lagrangian approach, we have performed a combined analysis of the free and quasi-free gN hN, NN NNh, and pN hN reactions. Considering spin-1/2 and -3/2 resonances, we found that a set of above-threshold resonances {S11, P11, P13}, with fitted mass values of about MR=1925, 2130, and 2050 MeV, respectively, and the four-star sub-threshold P13(1720) resonance reproduce best all existing data for the h production processes in the resonance-energy region considered in this work. All three above-threshold resonances found in the present analysis are essential and indispensable for the good quality of the present fits.