利用 CLAS 进行 6 GeV 电子散射产生的半包含 $\pi_0$ 靶与束流-靶不对称性测量
核实验
2018-06-20 v2 高能物理 - 唯象学
摘要
我们利用杰斐逊实验室的 CEBAF 大接受度谱仪（CLAS），给出了深度非弹性散射（DIS）中中性介子电生过程的靶与束流-靶自旋不对称性的精确测量结果。我们将 6 GeV 纵向极化电子散射到低温 NH 靶中的纵向极化质子上，并在四动量转移（ GeV）、Bjorken-（）、强子能量份额（）、介子横向动量（ GeV）以及轻子散射平面与强子产生平面之间的方位角 的多维分箱中，提取了 的双自旋和单靶自旋不对称性。我们提取了作为 和 函数的不对称性，这为纵向极化夸克的横向动量分布提供了探测途径。双自旋不对称性对 的依赖较弱。 矩在不确定度范围内为零，这与 Collins 碎裂函数的预期受抑一致。观测到的 矩表明，夸克-胶子关联在大 处是显著的。
引用
@article{arxiv.1709.10054,
title = {Semi-Inclusive $\pi_0$ target and beam-target asymmetries from 6 GeV electron scattering with CLAS},
author = {S. Jawalkar and S. Koirala and H. Avakian and P. Bosted and K. A. Griffioen and C. Keith and S. E. Kuhn and K. P. Adhikari and S. Adhikari and D. Adikaram and Z. Akbar and M. J. Amaryan and S. Anefalos Pereira and H. Avakian and J. Ball and N. A. Baltzell and M. Battaglieri and V. Batourine and I. Bedlinskiy and A. S. Biselli and S. Boiarinov and W. J. Briscoe and J. Brock and W. K. Brooks and S. Bultmann and V. D. Burkert and Frank Thanh Cao and C. Carlin and D. S. Carman and A. Celentano and G. Charles and T. Chetry and G. Ciullo and L. Clark and L. Colaneri and P. L. Cole and M. Contalbrigo and O. Cortes and V. Crede and A. D'Angelo and N. Dashyan and R. De Vita and E. De Sanctis and M. Defurne and A. Deur and C. Djalali and G. Ddoge and R. Dupre and H. Egiyan and A. El Alaoui and L. El Fassi and L. Elouadrhiri and P. Eugenio and G. Fedotov and S. Fegan and R. Fersch and A. Filippi and J. A. Fleming and T. A. Forest and A. Fradi and M. Garcon and Y. Ghandilyan and G. P. Gilfoyle and K. L. Giovanetti and F. X. Girod and C. Gleason and W. Gohn and E. Golovatch and R. W. Gothe and M. Guidal and N. Guler and L. Guo and H. Hakobyan and C. Hanretty and N. Harrison and M. Hattawy and D. Heddle and K. Hicks and G. Hollis and M. Holtrop and S. M. Hughes and Y. Ilieva and D. G. Ireland and B. S. Ishkhanov and E. L. Isupov and D. Jenkins and H. Jiang and K. Joo and S. Joosten and D. Keller and G. Khachatryan and M. Khachatryan and M. Khandaker and A. Kim and W. Kim and A. Klein and F. J. Klein and V. Kubarovsky and S. V. Kuleshov and L. Lanza and P. Lenisa and K. Livingston and H. Y. Lu and I . J . D. MacGregor and N. Markov and M. Mayer and M. E. McCracken and B. McKinnon and C. A. Meyer and T. Mineeva and M. Mirazita and V. Mokeev and R. A. Montgomery and A Movsisyan and C. Munoz Camacho and P. Nadel-Turonski and L. A. Net and S. Niccolai and G. Niculescu and I. Niculescu and M. Osipenko and A. I. Ostrovidov and R. Paremuzyan and K. Park and E. Pasyuk and E. Phelps and W. Phelps and J. Pierce and S. Pisano and O. Pogorelko and J. W. Price and Y. Prok and D. Protopopescu and B. A. Raue and M. Ripani and D. Riser and A. Rizzo and G. Rosner and P. Rossi and F. Sabatie and C. Salgado and R. A. Schumacher and E. Seder and Y. G. Sharabian and A. Simonyan and Iu. Skorodumina and G. D. Smith and D. I. Sober and D. Sokhan and N. Sparveris and I. Stankovic and S. Strauch and M. Taiuti and M. Ungaro and H. Voskanyan and E. Voutier and N. K. Walford and D. P. Watts and X. Wei and L. B. Weinstein and M. H. Wood and N. Zachariou and J. Zhang and Z. W. Zhao},
journal= {arXiv preprint arXiv:1709.10054},
year = {2018}
}
备注
18 preprint pages, 3 figures