论文标题
关于在n*（1440）n阈值附近形成的二巴里亚人的可能性 - iSscalar单杆型生产重新审视
On the Possibility of Dibaryon Formation near the N*(1440)N threshold -- the Isoscalar Single-Pion Production Revisited
论文作者
论文摘要
等轴单杆生产在总横截面的能量依赖性方面表现出巨大的增加，这与$ n^*（1440）$生产通道的通常开放不符，随后呈乳状衰减。在ARXIV：2102.05575中，它被解释为狭窄的Breit-Wigner结构，该结构在顺序的单杆型生产过程中导致了$ D^*（2380）$共振的可能解释。我们证明，当面对等isscalar单杆铅生产的数据库时，这种尝试已经失败。我们调查了观察到的凸起结构是否指向$ i（j^p）= 0（1^+）$和$ 0（1^ - ）$附近$ n^*（1440）n $ threshold的dibaryon状态。这种情况将类似于$δ（1232）n $阈值的情况，在此发现了许多二骨共振的签名。
The isoscalar single-pion production exhibits a broad bump in the energy dependence of the total cross section, which does not correspond to the usual opening of the $N^*(1440)$ production channel with subsequent pion decay. In arxiv:2102.05575 it was interpreted as a narrow Breit-Wigner structure, which leads in a sequential single-pion production process to a possible explanation of the $d^*(2380)$ resonance. We demonstrate that such an attempt fails already, when confronted with the data base for isoscalar single-pion production. We investigate whether the observed bump structure rather points to the formation of dibaryon states with $I(J^P) = 0(1^+)$ and $0(1^-)$ near the $N^*(1440)N$ threshold. This situation would be similar to the situation at the $Δ(1232)N$ threshold, where the signature of a number of dibaryonic resonances has been found.
