论文标题
用$ \ bar k p \toλ（σ）k \ barkπ$反应测试“ $ f_1（1420）$”的来源
Testing the origin of the "$f_1(1420)$" with the $\bar K p \to Λ(Σ) K\bar K π$ reaction
论文作者
论文摘要
我们将$ \ b k p \ to y k \ barkπ$用$ \ bar k = \ b k = \ b k^0，k^ - $和$ y =σ^0，σ^+，λ$，在$ k \ barkπ$不变质量的区域为$ 1200-1550 $ MEV。 $ f_1（1285）$共振与$ k^* \ bar k $的强耦合使基于$ k^* $交换的机制非常有效地产生了在$ k \ barkπ$不变质量分布中观察到的共振。此外，在所有反应中，当$ k^* \ bar k $衰减模式$ f_1（1285）$时，当$ k^* $以较高不变质量放置外壳时，相关的峰值为$ 1420 $ mev。我们声称这是实验中与“ $ f_1（1420）$”共振相关的$ k^* \ bar k $分布的峰值的原因。
We study the $\bar K p \to Y K\bar K π$ reactions with $\bar K = \bar K^0, K^-$ and $Y=Σ^0, Σ^+, Λ$, in the region of $K\bar K π$ invariant masses of $1200-1550$ MeV. The strong coupling of the $f_1(1285)$ resonance to $K^* \bar K$ makes the mechanism based on $K^*$ exchange very efficient to produce this resonance observed in the $K\bar K π$ invariant mass distribution. In addition, in all the reactions one observes an associated peak at $1420$ MeV which comes from the $K^* \bar K$ decay mode of the $f_1(1285)$ when the $K^*$ is placed off shell at higher invariant masses. We claim this to be the reason for the peak of the $K^* \bar K$ distribution seen in the experiments which has been associated to the "$f_1(1420)$" resonance.
