论文标题
$γp\ to K^+σ^0（1385）$ phopoproduction in $γp\ in nucleon和$δ$共振
Nucleon and $Δ$ resonances in $γp \to K^+ Σ^0(1385)$ photoproduction
论文作者
论文摘要
$γp\ to K^+σ^0（1385）$的光生源是根据有效的Lagrangian方法使用Tree-Alvel Born近似的方法，目的是了解该反应中的反应机理和共振内容物及其相关参数。 In addition to the $t$-channel $K$ and $K^\ast(892)$ exchanges, $s$-channel nucleon ($N$) exchange, $u$-channel $Λ$ exchange, and generalized contact term, the exchanges of a minimum number of $N$ and $Δ$ resonances in the $s$ channel are taken into account in constructing the reaction amplitudes to describe the experimental data.发现可以通过包括$ N（1895）{1/2}^ - $，$δ（1900）{1/2}^ - $和$δ（1930）{5/2}^ - $ $ $ $ resonances。详细讨论了$γp\ to K^+σ^0（1385）$的反应机理，并给出了该反应的梁和目标不对称的预测。 $γp\ to K^0σ^+（1385）$的横截面证明能够进一步限制理论模型，并将共振内容固定在$γp\至k^+σ^0（1385）$中。
The photoproduction of $γp \to K^+ Σ^0(1385)$ is investigated based on an effective Lagrangian approach using the tree-level Born approximation, with the purpose of understanding the reaction mechanisms and resonance contents and their associated parameters in this reaction. In addition to the $t$-channel $K$ and $K^\ast(892)$ exchanges, $s$-channel nucleon ($N$) exchange, $u$-channel $Λ$ exchange, and generalized contact term, the exchanges of a minimum number of $N$ and $Δ$ resonances in the $s$ channel are taken into account in constructing the reaction amplitudes to describe the experimental data. It is found that the most recent differential cross-section data from the CLAS Collaboration can be well reproduced by including one of the $N(1895){1/2}^-$, $Δ(1900){1/2}^-$, and $Δ(1930){5/2}^-$ resonances. The reaction mechanisms of $γp \to K^+ Σ^0(1385)$ are discussed in detail, and the predictions of the beam and target asymmetries for this reaction are given. The cross sections of $γp \to K^0 Σ^+(1385)$ are shown to be able to further constrain the theoretical models and pin down the resonance contents for $γp \to K^+ Σ^0(1385)$.
