arXivDaily arXiv每日学术速递 周一至周五更新
arXiv周末暂无论文更新,休息一下吧,周末愉快~~
arXiv 1201.3173nucl-th
收藏

K介子氘的近阈值$K^- d$散射和性质

Near-threshold $K^- d$ scattering and properties of kaonic deuterium

N. V. Shevchenko

摘要:

我们计算了K介子氘的$1s$能级位移和宽度,与近阈值反K介子-氘散射的精确结果相对应。求解了具有强$K^- - d$势和库仑势的Lippmann-Schwinger本征方程。二体$K^- - d$势再现了从具有耦合通道的三体Alt-Grassberger-Sandhas方程获得的$K^- d$散射的近阈值弹性振幅,使用四个版本的$\bar{K}N - πΣ$势。两个新的$\bar{K}N - πΣ$电位再现最近的SIDDHARTA数据的K介子氢和我们的旧电位再现KEK数据有一个或两个极版本的$Λ(1405)$共振和再现实验数据的$K^- p$散射。

英文摘要:

We calculated the $1s$ level shifts and widths of kaonic deuterium, corresponding to accurate results on near-threshold antikaon - deuteron scattering. The Lippmann-Schwinger eigenvalue equation with a strong $K^- - d$ and Coulomb potentials was solved. The two-body $K^- - d$ potentials reproduce the near-threshold elastic amplitudes of $K^- d$ scattering obtained from the three-body Alt-Grassberger-Sandhas equations with the coupled channels using four versions of the $\bar{K}N - πΣ$ potentials. Both new $\bar{K}N - πΣ$ potentials reproducing the very recent SIDDHARTA data on kaonic hydrogen and our older potentials reproducing KEK data have one- or two-pole versions of the $Λ(1405)$ resonance and reproduce experimental data on $K^- p$ scattering.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑