排他性衍射过程对 SIDIS 中测得方位角不对称性的贡献
高能物理 - 实验
2020-06-24 v1 高能物理 - 唯象学
摘要
在非极化核子上半包容深度非弹性散射（SIDIS）的强子轻子产生，可通过截面中方位角调制的测量，获取核子内夸克内禀横向动量及 Boer-Mulders 函数的信息。这些调制近来由 DESY 的 HERMES 实验在质子与氘靶上、以及由 COMPASS 实验利用 CERN SPS 缪子束与 LiD 靶测得。在这两种情形下， 与 调制的振幅对正负强子均表现出强烈的运动学依赖。人们早已知道，这些 SIDIS 实验中所测末态强子接收了矢量介子排他性衍射产生的贡献，该贡献在较大的 （强子所携虚光子能量份额）值处尤为重要。在以往的方位角不对称性测量中未考虑此贡献，因为当时并不知晓其会扭曲方位角调制。目前，已发展出一种评估排他性反应对 COMPASS 所测方位角不对称性贡献的方法。扣除该贡献可更好理解运动学效应，而剩余的非零 调制则给出了非零 Boer-Mulders 效应的迹象。
引用
@article{arxiv.1912.10322,
title = {Contribution of exclusive diffractive processes to the measured azimuthal asymmetries in SIDIS},
author = {J. Agarwala and M. G. Alexeev and G. D. Alexeev and A. Amoroso and V. Andrieux and N. V. Anfimov and V. Anosov and A. Antoshkin and K. Augsten and W. Augustyniak and C. D. R. Azevedo and B. Badelek and F. Balestra and M. Ball and J. Barth and R. Beck and Y. Bedfer and J. Berenguer Antequera and J. Bernhard and M. Bodlak and P. Bordalo and F. Bradamante and A. Bressan and M. Buechele and V. E. Burtsev and W. -C. Chang and C. Chatterjee and M. Chiosso and A. G. Chumakov and S. -U. Chung and A. Cicuttin and P. M. M. Correia and M. L. Crespo and D. D'Ago and S. Dalla Torre and S. S. Dasgupta and S. Dasgupta and I. Denisenko and O. Yu. Denisov and L. Dhara and S. V. Donskov and N. Doshita and Ch. Dreisbach and W. Duennweber and R. R. Dusaev and A. Efremov and P. D. Eversheim and M. Faessler and A. Ferrero and M. Finger and M. Finger and H. Fischer and C. Franco and J. M. Friedrich and V. Frolov and F. Gautheron and O. P. Gavrichtchouk and S. Gerassimov and J. Giarra and I. Gnesi and M. Gorzellik and A. Grasso and A. Gridin and M. Grosse Perdekamp and B. Grube and A. Guskov and D. von Harrach and R. Heitz and F. Herrmann and N. Horikawa and N. d'Hose and C. -Y. Hsieh and S. Huber and S. Ishimoto and A. Ivanov and T. Iwata and M. Jandek and T. Jary and R. Joosten and P. Joerg and E. Kabuss and F. Kaspar and A. Kerbizi and B. Ketzer and G. V. Khaustov and Yu. A. Khokhlov and Yu. Kisselev and F. Klein and J. H. Koivuniemi and V. N. Kolosov and K. Kondo and I. Konorov and V. F. Konstantinov and A. M. Kotzinian and O. M. Kouznetsov and A. Koval and Z. Kral and F. Krinner and Y. Kulinich 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 A. Magnon and N. Makins and N. Makke and G. K. Mallot and A. Maltsev and S. A. Mamon and B. Marianski and A. Martin and J. Marzec and J. Matousek and T. Matsuda and G. Mattson and G. V. Meshcheryakov and M. Meyer and W. Meyer and Yu. V. Mikhailov and M. Mikhasenko and E. Mitrofanov and N. Mitrofanov and Y. Miyachi and A. Moretti and A. Nagaytsev and C. Naim and D. Neyret and J. Novy and W. -D. Nowak and G. Nukazuka and A. S. Nunes and A. G. Olshevskiy and M. Ostrick and D. Panzieri and B. Parsamyan and S. Paul and H. Pekeler and J. -C. Peng and F. Pereira and M. Pesek and D. V. Peshekhonov and M. Peskova and N. Pierre and S. Platchkov and J. Pochodzalla and V. A. Polyakov and J. Pretz and M. Quaresma and C. Quintans and S. Ramos and G. Reicherz and C. Riedl and D. I. Ryabchikov and T. Rudnicki and A. Rybnikov and A. Rychter and V. D. Samoylenko and A. Sandacz and S. Sarkar and I. A. Savin and G. Sbrizzai and H. Schmieden and A. Selyunin and L. Sinha and M. Slunecka and J. Smolik and A. Srnka and D. Steffen and M. Stolarski and O. Subrt and M. Sulc and H. Suzuki and A. Szabelski and P. Sznajder and S. Tessaro and F. Tessarotto and A. Thiel and J. Tomsa and F. Tosello and A. Townsend and V. Tskhay and S. Uhl and B. I. Vasilishin and A. Vauth and B. M. Veit and J. Veloso and B. Ventura and A. Vidon and M. Virius and M. Wagner and S. Wallner and M. Wilfert and K. Zaremba and P. Zavada and M. Zavertyaev and M. Zemko and E. Zemlyanichkina and Y. Zhao and M. Ziembicki},
journal= {arXiv preprint arXiv:1912.10322},
year = {2020}
}
备注
13 pages, 7 figures