Search for the (-)+pentaquark via the π- p-> K- X reaction at 1.92 GeV/c

Search for the (-)+pentaquark via the π- p-> K- X reaction at 1.92 GeV/c
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通过 1.92 GeV/c 的 π- p-> K- X 反应寻找 (-)+五夸克

DOI:
10.1103/physrevlett.109.132002
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发表时间:
2013
期刊:
Phys. Rev. Lett.
影响因子:
--
通讯作者:
et al.
et al.
中科院分区:
--
文献类型:
--
作者:
K. Shirotori;et al.

文献摘要

相似文献

在日本质子加速器研究中心(J-PARC),通过缺失质量分辨率(FWHM)的反应寻找五夸克重子。将介子束入射到液氢靶上,束动量为。未观察到与质量相对应的峰结构。在实验室框架内2°~ 15°散射角范围内的平均生产截面的上限为质量区域。利用有效的拉格朗日方法,得到的衰减宽度上限分别为0.72和3.1 MeV。
Thepentaquark baryon was searched for via thereaction with a missing mass resolution of(FWHM) at the Japan Proton Accelerator Research Complex (J-PARC).meson beams were incident on the liquid hydrogen target with a beam momentum of. No peak structure corresponding to themass was observed. The upper limit of the production cross section averaged over the scattering angle of 2° to 15° in the laboratory frame is obtained to bein the mass region of. The upper limit of thedecay width is obtained to be 0.72 and 3.1 MeV forand, respectively, using the effective Lagrangian approach.