在 $d(K^-,n)\pi\Sigma$ 反应中测量的 $\Lambda(1405)$ 极点位置
核实验
2022-12-21 v1
摘要
我们在氘核上的 诱发反应中测量了一组低于和高于 质量阈值的 、 和 不变质量谱。在 与 耦合道框架下，我们推导了同位旋 0 道中的 波 和 散射振幅。我们发现对应于 的共振极点位于 1417.7（拟合误差）（系统误差） + （拟合误差）（系统误差)] MeV/，比粒子数据组（Particle Data Group）确定的值更靠近 质量阈值。
引用
@article{arxiv.2209.08254,
title = {Pole position of $\Lambda(1405)$ measured in $d(K^-,n)\pi\Sigma$ reactions},
author = {PARC E31 Collaboration and S. Aikawa and S. Ajimura and T. Akaishi and H. Asano and G. Beer and C. Berucci and M. Bragadireanu and P. Buehler and L. Busso and M. Cargnelli and S. Choi and C. Curceanu and S. Enomoto and H. Fujioka and Y. Fujiwara and T. Fukuda and C. Guaraldo and T. Hashimoto and R. S. Hayano and T. Hiraiwa and M. Iio and M. Iliescu and K. Inoue and Y. Ishiguro and S. Ishimoto and T. Ishikawa and K. Itahashi and M. Iwai and M. Iwasaki and K. Kanno and K. Kato and Y. Kato and S. Kawasaki and P. Kienle and Y. Komatsu and H. Kou and Y. Ma and J. Marton and Y. Matsuda and Y. Mizoi and O. Morra and R. Murayama and T. Nagae and H. Noumi and H. Ohnishi and S. Okada and Z. Omar and H. Outa and K. Piscicchia and Y. Sada and A. Sakaguchi and F. Sakuma and M. Sato and A. Scordo and M. Sekimoto and H. Shi and K. Shirotori and D. Sirghi and F. Sirghi and K. Suzuki and S. Suzuki and T. Suzuki and K. Tanida and H. Tatsuno and A. O. Tokiyasu and M. Tokuda and D. Tomono and A. Toyoda and K. Tsukada and O. Vazquez-Doce and E. Widmann and T. Yamaga and T. Yamazaki and H. Yim and Q. Zhang and J. Zmeskal},
journal= {arXiv preprint arXiv:2209.08254},
year = {2022}
}
备注
8 pages, 5 figures