光子能量350-680 MeV下反应γd→pn中的张量分析本领T₂₀

Tensor analyzing power $T_{20}$ in the reaction $γ\vec{d}\to pn$ at photon energies 350-680 MeV

V. V. Gauzshtein, A. I. Fix, V. I. Ivanov, D. M. Nikolenko, I. A. Rachek, Yu. V. Shestakov, D. K. Toporkov, A. V. Yurchenko, S. A. Zevakov, G. N. Baranov, A. V. Bogomyagkov, V. M. Borin, E. M. Darwish, D. V. Dorokhova, V. L. Dorokhov, S. E. Karnaev, A. A. Kovalenko, V. N. Kudryavtsev, M. I. Levchuk, E. B. Levichev, I. B. Logashenko, A. Yu. Loginov, T. V. Maltsev, R. Z. Mamutov, I. N. Okunev, P. A. Piminov, L. I. Shekhtman, E. A. Simonov, S. V. Sinyatkin, M. A. Skamarokha, E. V. Starostina, I. A. Ulev, A. N. Zhuravlev

arXiv 2608.09169首次发表：2026-08-11更新：2026-08-11

AI 中文总结

本研究在VEPP-3储存环上测量350-680 MeV光子能量下γd→pn反应的张量分析本领T₂₀，结合新数据与2007年结果的扩展数据集的理论分析显示其与介子-重子计算结果符合良好。

AI 中文摘要

我们测量了光子能量E_γ=350-680 MeV下反应γd→pn中的张量分析本领T₂₀。实验在VEPP-3储存环上开展，采用内部张量极化氘气靶和标记准实光子束，获取了质子出射角Θ_p=70°-102°的数据。与现代介子-重子计算结果对比，在现有不确定度范围内整体符合良好。我们还对扩展数据集进行理论分析，该数据集涵盖从产生阈到680 MeV的能量范围，包含本次新数据及2007年的过往结果。

英文摘要

We present measurements of the tensor analyzing power $T_{20}$ in the reaction $γ{d}\to pn$ at photon energies $E_γ= 350$-$680$~MeV. The experiment was performed at the VEPP-3 storage ring using an internal tensor-polarized deuterium gas target and a tagged quasi-real photon beam. The data were obtained for proton emission angles $Θ_p = 70^\circ$-$102^\circ$. Comparison with modern meson-baryon calculations shows generally satisfactory agreement within the present uncertainties. A theoretical analysis of an extended data set, covering the energy range from threshold to 680~MeV and including both the new data and the previous results from 2007, is presented.

Comments10 pages, 9 figures

论文原文

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