Muon-Deuteron Deep-Inelastic Scattering中Dihadron Transverse-Spin Asymmetry
高能物理 - 实验
2025-12-30 v1
摘要
2022 年，COMPASS 合作实验对穿过透镜聚变 deuteron (6LiD) 靶的深层电子性 muon-scattering 进行半包容性测量。从这些数据中，使用 oppositely charged hadron 的成对提取出横向自旋依赖的 dihadron 不对称性。这些不对称性直接敏感于夸克 transversity 分布，为对这些基本量的独立把握提供了相对于 COMPASS 测量的 Collins 不对称性的独立途径。本结果显著改进了之前的 COMPASS deuteron 测量结果，后者是全球唯一可用的 deuteron 数据，并且达到了与 COMPASS 现有质子结果相当的统计精度。在较大的 Bjorken-x 处观察到一个小但非零的不对称性，与理论预期一致。从点提取出的价值夸克 transversity 分布尤其是对 d 夸克 transversity 的确定性显著提高。这些测量代表了对夸克横向自旋结构完成映射的重要一步。
引用
@article{arxiv.2512.22311,
title = {Dihadron Transverse-Spin Asymmetries in Muon-Deuteron Deep-Inelastic Scattering},
author = {G. D. Alexeev and M. G. Alexeev and C. Alice and A. Amoroso and V. Andrieux and V. Anosov and S. Asatryan and K. Augsten and W. Augustyniak and C. D. R. Azevedo and B. Badelek and R. Beck and J. Beckers and Y. Bedfer and V. Benesova and J. Bernhard and F. Bradamante and A. Bressan and W. -C . Chang and C. Chatterjee and M. Chiosso and S. -U. Chung and A. Cicuttin and M. L. Crespo and D. D'Ago and S. Dalla Torre and S. S. Dasgupta and S. Dasgupta and M. Dehpour and F. Delcarro and I. Denisenko and O. Yu. Denisov and S. V. Donskov and N. Doshita and Ch. Dreisbach and W. Dün nweber and R. R. Dusaev and D. Ecker and P. Faccioli and M. Faessler and M. Finger and M. Finger and H. Fischer and K. J. Flöthner and W. Florian and J. M. Friedrich and V. Frolov and L. G. Garcia Ordòñez and O. P. Gavrichtchouk and S. Gerassimov and J. Giarra and D. Giordan o and A. Grasso and A. Gridin and M. Grosse Perdekamp and B. Grube and M. Grüner and A. Guskov and P. Haas and D. von Harrach and M. Hoffmann and A. Hoghmrtsyan and N. d'Hose and C. -Y. Hsieh and S. Ishimoto and A. Ivanov and T. Iwata and V. Jary and E. Jelinkova and R. Joosten and E. Kabuß and F. Kaspar and A. Kerbizi and B. Ketzer and G. V. Khaustov and T. Klasek and J. H. Koivuniemi and V. N. Kolosov and K. Kondo Horikawa and I. Konorov and A. Yu. Korzenev and A. M. Kotzinian and O. M. Kouznetsov and A. Koval and F. Kunne and K. Kurek and R. P. Kurjata and A. Kveton and K. Lavickova and S. Levorato and Y. -S. Lian and J. Lichtenstadt and P. -J. Lin and R. Longo and V. E. Lyubovitskij and A. Maggiora and N. Makke and G. K. Mallot and A. Maltsev and A. Martin and H. Marukyan and J. Marzec and J. Matoušek and T. Matsuda and C. Menezes Pires and F. Metzge r and W. Meyer and M. Mikhasenko and E. Mitrofanov and D. Miura and Y. Miyachi and R. Molina and A. Movsisian and A. Moretti and A. Nagaytsev and D. Neyret and M. Niemiec and J. Nový and W. -D. Nowak and G. Nukazuka and A. G. Olshevsky and M. Ostrick and D. Panzieri and B. Parsamyan and S. P aul and H. Pekeler and J. -C. Peng and M. Pešek and D. V. Peshekhonov and M. Pešková and S. Platchkov and J. Pochodzalla and V. A. Polyakov and P. Pucci and C. Quintans and G. Reicherz and C. Riedl and D. I. Ryabchikov and A. Rychter and A. Rymbekova and V. D. Samoylenko and A. S andacz and S. Sarkar and I. A. Savin and G. Sbrizzai and H. Schmieden and A. Selyunin and S. Seriubin and L. Sinha and D. Spülbeck and A. Srnka and M. Stolarski and M. Sulc and H. Suzuki and S. Tessaro and F. Tessarotto and A. Thiel and F. Tosello and A. Townsend and V. Tskhay and B. Valino ti and B. M. Veit and J. F. C. A. Veloso and A. Vijayakumar and M. Virius and M. Wagner and S. Wallner and K. Zaremba and M. Zavertyaev and M. Zemko and E. Zemlyanichkina and M. Ziembicki},
journal= {arXiv preprint arXiv:2512.22311},
year = {2025}
}
备注
6 pages, 3 figures