Search for Θ+ via the Pion Induced Reaction at J-PARC: J-PARC E19

被引：0
|
作者：
K. Shirotori
机构：
[1] JAEA,
[2] Japan Atomic Energy Agency,undefined
来源：
Few-Body Systems | 2013年 / 54卷
关键词：
Production Cross Section; Differential Cross Section; Beam Momentum; Baryon Resonance; Beam Pion;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
The Θ+ pentaquark baryon was searched for via the π−p → K−X reaction at J-PARC. π− meson beams were irradiated on the liquid hydrogen target with the beam momentum of 1.92 GeV/c. In the missing mass spectrum, no peak structure corresponding to Θ+ mass was observed. The preliminary upper limit of the differential cross section averaged over the scattering angle of 2° to 15° at the laboratory frame was less than 0.3 μb/sr at the 90 % confidence level in the missing mass region over 1.51 to 1.55 GeV/c2.
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页码：145 / 150
页数：5
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