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arXiv 2104.09158nucl-ex
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中子与正电子束的深虚康普顿散射

Deeply virtual Compton scattering on the neutron with positron beam

Silvia Niccolai, Pierre Chatagnon, Mostafa Hoballah, Dominique Marchand, Carlos Munoz Camacho, Eric Voutier

备注：
arXiv admin note: substantial text overlap with arXiv:2007.15081, arXiv:1906.09419
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摘要：

测量中子靶上的DVCS是加深我们对广义部分子分布（GPD）核子结构理解的必要步骤。中子和质子靶的组合允许执行GPD的风味分解。此外，中子DVCS起着补充作用，DVCS上的横向极化质子靶在确定的GPD $E$，最不知名的和受约束的GPD，进入季的角动量和规则。在$e^{\pm} d\to e^{\pm}nγ(p)$反应中的束电荷不对称性（BCA）的测量可以显著地影响$E$的实部的实验测定，并且在较小程度上影响$\widetilde{H}$ GPD的实部的实验测定。

英文摘要：

Measuring DVCS on a neutron target is a necessary step to deepen our understanding of the structure of the nucleon in terms of Generalized Parton Distributions (GPDs). The combination of neutron and proton targets allows to perform a flavor decomposition of the GPDs. Moreover, neutron-DVCS plays a complementary role to DVCS on a transversely polarized proton target in the determination of the GPD $E$, the least known and constrained GPD that enters Ji's angular momentum sum rule. A measurement of the beam-charge asymmetry (BCA) in the $e^{\pm} d\to e^{\pm}nγ(p)$ reaction can significantly impact the experimental determination of the real parts of the $E$ and, to a lesser extent, $\widetilde{H}$ GPDs.

机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。

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