HERA 高 $Q^2$ 电子-质子碰撞中基于非分箱深度学习的喷注子结构测量
高能物理 - 实验
2023-09-15 v3
摘要
高能夸克和胶子 initiated 喷注（喷注子结构）内的辐射模式被广泛用作强作用力的精确探针，以及用于优化事件生成器的环境，在高中能粒子和核物理中有众多应用。考察电子-质子碰撞尤为引人关注，因为强子对撞机中存在的许多复杂性在此并不存在。本文使用 HERA 上 H1 探测器记录的数据，对电子-质子碰撞中的现代喷注子结构观测量——喷注角动量（jet angularities）——进行了详细研究。该测量为非分箱且多维的，使用机器学习来修正探测器效应。相应喷注的所有可用重建对象信息由一个图神经网络解释，在一组选定的喷注角动量上实现了优越的精度。这些网络的训练得益于伯克利实验室 Perlmutter 超级计算机中大量 GPU 的使用。粒子喷注在实验室系中使用 喷注聚类算法重建。结果在高的横动量转移 GeV 和 inelasticity 下给出。该分析也在 的子区域中进行，从而探测子结构变量的尺度依赖性。数据还与多种预测进行比较，并指向此类模型可能的改进。
引用
@article{arxiv.2303.13620,
title = {Unbinned Deep Learning Jet Substructure Measurement in High $Q^2$ ep collisions at HERA},
author = {The H1 collaboration and V. Andreev and M. Arratia and A. Baghdasaryan and A. Baty and K. Begzsuren and A. Bolz and V. Boudry and G. Brandt and D. Britzger and A. Buniatyan and L. Bystritskaya and A. J. Campbell and K. B. Cantun Avila and K. Cerny and V. Chekelian and Z. Chen and J. G. Contreras and J. Cvach and J. B. Dainton and K. Daum and A. Deshpande and C. Diaconu and A. Drees and G. Eckerlin and S. Egli and E. Elsen and L. Favart and A. Fedotov and J. Feltesse and M. Fleischer and A. Fomenko and C. Gal and J. Gayler and L. Goerlich and N. Gogitidze and M. Gouzevitch and C. Grab and T. Greenshaw and G. Grindhammer and D. Haidt and R. C. W. Henderson and J. Hessler and J. Hladký and D. Hoffmann and R. Horisberger and T. Hreus and F. Huber and P. M. Jacobs and M. Jacquet and T. Janssen and A. W. Jung and J. Katzy and C. Kiesling and M. Klein and C. Kleinwort and H. T. Klest and R. Kogler and P. Kostka and J. Kretzschmar and D. Krücker and K. Krüger and M. P. J. Landon and W. Lange and P. Laycock and S. H. Lee and S. Levonian and W. Li and J. Lin and K. Lipka and B. List and J. List and B. Lobodzinski and O. R. Long and E. Malinovski and H. -U. Martyn and S. J. Maxfield and A. Mehta and A. B. Meyer and J. Meyer and S. Mikocki and V. M. Mikuni and M. M. Mondal and K. Müller and B. Nachman and Th. Naumann and P. R. Newman and C. Niebuhr and G. Nowak and J. E. Olsson and D. Ozerov and S. Park and C. Pascaud and G. D. Patel and E. Perez and A. Petrukhin and I. Picuric and D. Pitzl and R. Polifka and S. Preins and V. Radescu and N. Raicevic and T. Ravdandorj and P. Reimer and E. Rizvi and P. Robmann and R. Roosen and A. Rostovtsev and M. Rotaru and D. P. C. Sankey and M. Sauter and E. Sauvan and S. Schmitt and B. A. Schmookler and G. Schnell and L. Schoeffel and A. Schöning and F. Sefkow and S. Shushkevich and Y. Soloviev and P. Sopicki and D. South and A. Specka and M. Steder and B. Stella and U. Straumann and C. Sun and T. Sykora and P. D. Thompson and F. Torales Acosta and D. Traynor and B. Tseepeldorj and Z. Tu and G. Tustin and A. Valkárová and C. Vallée and P. Van Mechelen and D. Wegener and E. Wünsch and J. Žáček and J. Zhang and Z. Zhang and R. Žlebčík and H. Zohrabyan and F. Zomer},
journal= {arXiv preprint arXiv:2303.13620},
year = {2023}
}
备注
25 pages, 10 figures, 8 tables, version accepted by Physics Letters B