Partial-wave analyses of gamma p -> eta p and gamma n -> eta n in using a multichannel framework

Hunt B. C.; Manley D. M.

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Partial-wave analyses of gamma p -> eta p and gamma n -> eta n in using a multichannel framework

机译：使用多通道框架的伽马P - > ETA P和Gamma N - > ETA N的偏波分析

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This paper presents results from partial-wave analyses of the photoproduction reactions gamma p -> eta p and gamma n -> eta n. World data for the observables d alpha/d Omega, Sigma, T, P, F, and E were analyzed as part of this work. The dominant amplitude in the fitting range from threshold to a c.m. energy of 1900 MeV was found to be S-11 in both reactions, consistent with results of other groups. At c.m. energies above 1600 MeV, our solution deviates from published results, with this work finding higher-order partial waves becoming significant. Data off the proton suggest that the higher-order terms contributing to the reaction include P-11, P-13, and F-15. The final results also hint that F-17 is needed to fit double-polarization observables above 1900 MeV. Data off the neutron show a contribution from P13, as well as strong contributions from D-13 and D-15.

机译：本文提出了光生产反应的偏波分析结果γp - >η1a和γn-> eta n。可观察到的世界数据D Alpha / D Omega，Sigma，T，P，F和E作为这项工作的一部分进行了分析。拟合范围的主导幅度从阈值到下午的阈值。在两种反应中发现了1900米的能量是S-11，与其他组的结果一致。在下午我们的解决方案偏离发表的结果超过1600 MeV的能量，这项工作发现高阶部分海浪变得显着。质子的数据表明，有助于反应的高阶项包括P-11，P-13和F-15。最终结果还提出了F-17以适应1900 MeV以上的双极化可观察。数据关闭中子的数据显示为P13的贡献，以及D-13和D-15的强大贡献。

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《Physical review, C》 |2019年第5期|共22页
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Hunt B. C.; Manley D. M.;
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Kent State Univ Dept Phys Kent OH 44242 USA;

Kent State Univ Dept Phys Kent OH 44242 USA;

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正文语种 eng
中图分类原子核物理学、高能物理学;
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Partial-wave analyses of gamma p -> eta p and gamma n -> eta n in using a multichannel framework

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