Role of the nucleon resonances with different spins in the photoproduction of kaon on the nucleon

We have studied the role of nucleon resonances with different spin numbers in the kaon photoproduction process γp → K ⁺ Λ by using an isobar, where the included nucleon resonances have spins up to 9/2. The model was fitted to around 7400 experimental data points. It is found that the most important resonances in the γp → K ⁺ Λ reaction are those with spin 3/2, followed by spin 5/2. Contribution of the higher spin resonances is found to be less important in this process. (paper)