Calculation of the 3He (in-flight K−,n) reaction for searching the deeply-bound K−pp state

Calculation of the 3He (in-flight K−,n) reaction for searching the deeply-bound K−pp state
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计算 3He(飞行中的 K−,n)反应以搜索深度束缚的 K−pp 态

DOI:
10.1016/j.physletb.2007.07.038
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发表时间:
2007
期刊:
影响因子:
4.4
通讯作者:
T. Harada
T. Harada
中科院分区:
物理与天体物理2区
文献类型:
--
作者:
T. Koike;T. Harada

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利用格林函数方法,从理论上研究了3he(飞行中的K−,n)反应形成深束缚K−pp态的过程。为即将到来的J-PARC E15实验计算了[公式:见文]和θn=0°处的预期包容谱和半不相容谱。我们利用K−和“pp”核-核之间的光势,系统地证明了光谱形状与光势强度的实部和虚部v0和W0的依赖关系。在光谱中观察到I=1/2, Jπ=0−的K - pp结合态明显峰的必要条件是v0值深于~−100 MeV, w0值浅于~−100 MeV,其强度参数符合最近的理论预测。
The formation of a deeply-bound K−pp state by the3He (in-flight K−,n) reaction is investigated theoretically in the distorted-wave impulse approximation using the Green's function method. The expected inclusive and semi-exclusive spectra at [Formula: see text] and θn=0° are calculated for the forthcoming J-PARC E15 experiment. We employ optical potentials between the K−and “pp” core-nucleus, and demonstrate systematically the dependence of the spectral shape on V0and W0, which are the real and imaginary parts of the strength for the optical potential, respectively. The necessary condition to observe a distinct peak of the K−pp bound state with I=1/2, Jπ=0−in the spectrum turns out to be that the value of V0is deeper than ∼−100 MeV and W0shallower than ∼−100 MeV, of which the strength parameters come up to recent theoretical predictions.
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DOI: --
发表时间: 2007
期刊: Proc.Jpn.Acad.B 83
影响因子: --
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DOI: --
发表时间: 2005
期刊: Progress of Theoretical Physics 114
影响因子: --
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