Delta+(1232)能区质子上的辐射π0光生反应
高能物理 - 实验
2010-02-25 v2
摘要
利用MAMI-B电子加速器设施的能量标记光子束，用Crystal Ball/TAPS探测器测量了反应γ p -> p π0 γ'。在Delta+(1232)共振的能量范围内，以高统计量确定了发射光子γ'的能量和角微分截面以及π0的角微分截面。将截面以及截面与非辐射过程γ p -> p π0的比值与理论反应模型进行了比较，其中反常磁矩κ_Delta+作为自由参数。由于模型计算未能详细再现实验分布的形状，目前无法提取κ_Delta+。
引用
@article{arxiv.1001.3626,
title = {Radiative pi0 photoproduction on protons in the Delta+(1232) region},
author = {S. Schumann and B. Boillat and E. J. Downie and P. Aguar-Bartolomé and J. Ahrens and J. R. M. Annand and H. J. Arends and R. Beck and V. Bekrenev and A. Braghieri and D. Branford and W. J. Briscoe and J. W. Brudvik and S. Cherepnya and R. Codling and P. Drexler and L. V. Fil'kov and D. I. Glazier and R. Gregor and E. Heid and D. Hornidge and O. Jahn and V. L. Kashevarov and R. Kondratiev and M. Korolija and M. Kotulla and D. Krambrich and B. Krusche and M. Lang and V. Lisin and K. Livingston and S. Lugert and I. J. D. MacGregor and D. M. Manley and M. Martinez-Fabregate and J. C. McGeorge and D. Mekterovic and V. Metag and B. M. K. Nefkens and A. Nikolaev and R. Novotny and M. Ostrick and R. O. Owens and P. Pedroni and A. Polonski and S. N. Prakhov and J. W. Price and G. Rosner and M. Rost and T. Rostomyan and D. Sober and A. Starostin and I. Supek and C. M. Tarbert and A. Thomas and M. Unverzagt and Th. Walcher and D. P. Watts and F. Zehr},
journal= {arXiv preprint arXiv:1001.3626},
year = {2010}
}
备注
14 pages, 19 figures