论文标题
Pion Axioprodulation：增量共振贡献
Pion axioproduction: The Delta resonance contribution
论文作者
论文摘要
使用BARYON手性偏置理论分析了带有中间$δ$共振的斜向轴产生过程，即$ an \toπn$。 $δ$共振包括两种方式：首先，推导$aΔn$ vertices，与共振接触，其次，以$πn$弹性散射的结果（包括$δ$），它隐含地包含在pion rectrectering 2agram的形式中。结果，轴核子散射的部分波横截面显示出$δ$共振周围能量区域的增强。由于isospin的破裂，增强功能不如先前预期的那么明显。但是，由于这里的同胞骨突破比通常的耐药过程要温和得多，因此新型的轴突搜索实验可能仍会利用这种效果。
The process of pion axioproduction, $aN\toπN$, with an intermediate $Δ$ resonance is analyzed using baryon chiral parturbation theory. The $Δ$ resonance is included in two ways: First, deriving the $aΔN$-vertices, the axion is brought into contact with the resonance, and, second, taking the results of $πN$ elastic scattering including the $Δ$, it is implicitly included in the form of a pion rescattering diagram. As a result, the partial wave cross section of axion-nucleon scattering shows an enhancement in the energy region around the $Δ$ resonance. Because of the isospin breaking, the enhancement is not as pronounced as previously anticipated. However, since the isospin breaking here is much milder than that for usual hadronic processes, novel axion search experiments might still exploit this effect.
