(scheme I). Without the Σ( 1 2 $^{−}$) contribution, different parameter h need to be used for γn → K $^{+}$Σ ∗− and γp → K $^{+}$Σ ∗ 0 processes. 

The properties and couplings for Σ( 1 2 $^{−}$), the contact term, and the s-channel resonances still have some un- certainties and need further investigation. More data of broader energy range on these processes will be helpful to clarify the roles of the contact term and the Σ( 1 2 $^{−}$) resonance. 

In summery, we study the process of K Σ $^{∗}$(1385) pho- toproduction from the nucleons in the framework of the effective Lagrangian method. From recent studies, there is possibly a Σ state with J p = 1 2 − near 1380 MeV. We consider the case that Σ( 1 2 $^{−}$) may contribute to the ob- servables of K Σ $^{∗}$(1385) photoproduction in experiments. Our results show that the Σ( 1 2 $^{−}$) production can give large negative contribution to beam asymmetry, which helps to explain the large negative linear beam asymme- 

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## IV. SUMMARY 

try observed by the LEPS experiment. With a portion of Σ( 1 2 $^{−}$), the same set of parameters can reproduce both the data of γn → K $^{+}$Σ ∗− from the LEPS experiment and the data of γp → K $^{+}$Σ ∗ 0 from the CLAS experi- ment. On the other hand, without including Σ( 1 2 $^{−}$), the present data on γn → K $^{+}$Σ ∗− can be described by tuning a parameter h in the contact term, which means differ- ent choices of parameter h in the contact term for γn and γp reactions are needed. To distinguish the roles of Σ( 1 2 $^{−}$) and the contact term, different predictions of the two schemes are presented for future experimental study. 

We thank Kanzo Nakayama and Yongseok Oh for the helpful discussions. This project is supported by the Na- tional Natural Science Foundation of China under Grant 10905059, 10875133, 10821063, and by China Postdoc- toral Science Foundation and the Ministry of Science and Technology of China (2009CB825200). 

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## Acknowledgments 

