Near-threshold K-d scattering and properties of kaonic deuterium
Near-threshold K-d scattering and properties of kaonic deuterium
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DOI：
10.1016/j.nuclphysa.2012.07.010
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发表时间：
2012-10-01
影响因子：
1.4
通讯作者：
Shevchenko, N. V.
中科院分区：
文献类型：
--
作者：
Shevchenko, N. V.
我们计算了K介子氘的Is能级位移和宽度，对应于近阈值反K介子-氘散射的精确结果。求解了具有强K-d势和库仑势的Lippmann-Schwinger本征值方程。两体K-d势再现了从三体Alt-Grassberger-Sandhas方程得到的近阈值弹性振幅的K（-）d散射与耦合通道使用两个版本的（K）over barN-pi Sigma势。新的（K）超过barN-pi σ势再现了最近关于K介子氢的SIDDHARTA数据，K-p散射的实验数据，并具有λ（1405）共振的单极或两极版本。(C)2012 Elsevier B. V.保留所有权利。
We calculated the Is 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 two versions of the (K) over barN-pi Sigma potentials. The new (K) over barN-pi Sigma potentials reproduce the very recent SIDDHARTA data on kaonic hydrogen, experimental data on K- p scattering and have one- or two-pole versions of the Lambda(1405) resonance. (C) 2012 Elsevier B.V. All rights reserved.