双π介子聚变生成$^3$He 过程中的 ABC 效应与共振结构
核实验
2015-06-22 v1 高能物理 - 实验
摘要
在所谓的 ABC 效应能区（即在不变质量谱中显著的低质量增强现象），对双π介子聚变生成He 的过程进行了独占且运动学完备的测量。实验在 COSY 加速器上利用 WASA 探测器装置完成。与在基本反应以及He反应中的观测结果类似，数据揭示了 ABC 效应与总截面中类共振能量依赖性之间的关联。微分截面可以通过以下假设得到很好的描述：除了传统的通道机制外，反应过程中还形成了共振。所推导出的共振宽度可以通过初态和末态原子核内核子的费米运动引起的碰撞展宽来理解。
引用
@article{arxiv.1408.5744,
title = {ABC Effect and Resonance Structure in the Double-Pionic Fusion to $^3$He},
author = {P. Adlarson and W. Augustyniak and W. Bardan and M. Bashkanov and F. S. Bergmann and M. Berłowski and H. Bhatt and A. Bondar and M. Büscher and H. Calén and I. Ciepał and H. Clement and D. Coderre and E. Czerwiński and K. Demmich and E. Doroshkevich and R. Engels and A. Erven and W. Erven and W. Eyrich and P. Fedorets and K. Föhl and K. Fransson and F. Goldenbaum and P. Goslawski and A. Goswami and K. Grigoryev and C. --O. Gullström and F. Hauenstein and L. Heijkenskjöld and V. Hejny and B. Höistad and N. Hüsken and L. Jarczyk and T. Johansson and B. Kamys and G. Kemmerling and F. A. Khan and A. Khoukaz and D. A. Kirillov and S. Kistryn and H. Kleines and B. Kłos and W. Krzemień and P. Kulessa and A. Kupść and A. Kuzmin and K. Lalwani and D. Lersch and B. Lorentz and A. Magiera and R. Maier and P. Marciniewski and B. Mariański and M. Mikirtychiants and H. -P. Morsch and P. Moskal and H. Ohm and I. Ozerianska and E. Perez del Rio and N. M. Piskunov and P. Podkopał and D. Prasuhn and A. Pricking and D. Pszczel and K. Pysz and A. Pyszniak and J. Ritman and A. Roy and Z. Rudy and S. Sawant and S. Schadmand and T. Sefzick and V. Serdyuk and B. Shwartz and R. Siudak and T. Skorodko and M. Skurzok and J. Smyrski and V. Sopov and R. Stassen and J. Stepaniak and E. Stephan and G. Sterzenbach and H. Stockhorst and H. Ströher and A. Szczurek and A. Täschner and A. Trzciński and R. Varma and G. J. Wagner and M. Wolke and A. Wrońska and P. Wüstner and P. Wurm and A. Yamamoto and L. Yurev and J. Zabierowski and M. J. Zieliński and A. Zink and J. Złomańczuk and P. Żuprański and M. Żurek},
journal= {arXiv preprint arXiv:1408.5744},
year = {2015}
}