Search for 6LH hypernucleus by the ^6Li (π-, K+) reaction at pπ=1.2 GeV/c

Search for 6LH hypernucleus by the ^6Li (π-, K+) reaction at pπ=1.2 GeV/c
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通过 pπ=1.2 GeV/c 处的 ^6Li (π-, K+) 反应搜索 6LH 超核

DOI:
10.1016/j.physletb.2013.12.062
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发表时间:
2014
期刊:
Physics Letter B
影响因子:
--
通讯作者:
et al.
et al.
中科院分区:
--
文献类型:
--
作者:
H. Sugimura;M. Agnello;J. K. Ahn;S. Ajimura;Y. Akazawa;N. Amano;K. Aoki;H. C. Bhang;N. Chiga;M. Endo;P. Evtoukhovitch;A. Feliciello;H. Fujioka;T. Fukuda;S. Hasegawa;S. Hayakawa;R. Honda;K. Hosomi;S. H. Hwang;Y. Ichikawa;et al.

文献摘要

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我们用Li6(Λ,K+)反应在pπ−=1.2GeV/c的条件下进行了一次寻找丰中子超核Hπ−6的实验,得到的遗失质谱的能量分辨率估计为3.2 MeV(半高宽),没有与HΛ6超核相对应的峰结构,既没有低于也没有高于HΛ4+2n粒子衰变阈值。在90%置信度水平下,结合H-Λ-6超核的产生截面的上限估计为1.2nb/sr。
We have carried out an experiment to search for a neutron-rich hypernucleus, H Λ 6, by the Li 6 (π−, K+) reaction at p π−= 1.2 GeV/c. The obtained missing-mass spectrum with an estimated energy resolution of 3.2 MeV (FWHM) showed no peak structure corresponding to the H Λ 6 hypernucleus neither below nor above the H Λ 4+ 2 n particle decay threshold. An upper limit of the production cross section for the bound H Λ 6 hypernucleus was estimated to be 1.2 nb/sr at 90% confidence level.