The Analysis Status of Σ+p Scattering Events in the J-PARC E40 Experiment
The Analysis Status of Σ+p Scattering Events in the J-PARC E40 Experiment
复制标题
J-PARC E40实验中Σ+p散射事件的分析现状
DOI：
10.1007/s00601-021-01698-x
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发表时间：
2021
期刊：
影响因子：
1.6
通讯作者：
for the J-PARC E40 collaboration
中科院分区：
文献类型：
--
作者：
Nanamura T.;Miwa K.;Akazawa Y.;Honda R.;Nakada Y.;Sakao T.;for the J-PARC E40 collaboration
J-PARC E40实验旨在克服超子-核子散射实验的困难，以高统计量测量散射截面。物理动机是验证相互作用中夸克泡利效应产生的大排斥力，并对相互作用进行系统的研究。到2020年6月，在J-Parc强子实验装置的K1.8束线上进行了物理数据采集。通过相互作用产生粒子，并用能谱仪标记它们的动量。散射物的反冲质子和衰变产生的质子是用周围的探测器系统CATCH探测到的。通过检验反冲质子的测量能量与散射体运动学计算能量之间的一致性，可以识别散射体。在目前的分析中，69M粒子被标记为束流，并识别出4500个散射事件。进一步分析以得出不同的横截面正在进行中。
The J-PARC E40 experiment aims for measuring cross sections of thescatterings with high statistics by overcoming difficulties of hyperon-nucleon scattering experiment. The physics motivations are to verify the large repulsive force due to quark Pauli effect in theinteraction and to perform systematic study of theinteraction. Physics data taking was performed at the K1.8 beam line in the J-PARC hadron experimental facility by 2020 June.particles were produced via thereaction and their momenta were tagged with spectrometers. Recoil proton of thescatterings and proton from thedecay were detected with surrounding detector system CATCH. Thescattering can be identified by checking the consistency for the recoil proton between the measured energy and the calculated energy from kinematics of thescattering . In present analysis, 69Mparticles are tagged as thebeam and 4500scattering events are identified. Further analysis to derive the differential cross sections is ongoing.