半inclusive强子对电产生的束自旋不对称性
高能物理 - 实验
2021-02-17 v1 核实验
摘要
报道了在带电π介子对的半inclusive电产生中纵向束自旋不对称性ALU的首次测量。ALU是一个高阶扭度观测量，并为获取核子扭度-3部分子分布函数e(x)提供了最干净的途径。数据是在Jefferson Lab的Hall-B中通过使5.498 GeV电子束轰击液氢靶，并用CLAS探测器重建散射电子和π介子对而收集的。提取了ALU的sin(phiR)矩在价夸克区相关运动学变量上的一维投影。对双强子产生的理解对于解释半inclusive深度非弹性散射中单强子产生的观测量至关重要，而双强子产生中单自旋不对称性的开创性测量为QCD动力学研究开辟了新途径。
引用
@article{arxiv.2010.09544,
title = {Beam spin asymmetry in semi-inclusive electroproduction of a hadron pair},
author = {M. Mirazita and H. Avakian and A. Courtoy and S. Pisano and S. Adhikari and M. J. Amaryan and G. Angelini and H. Atac and N. A. Baltzell and L. Barion and M. Battaglieri and I. Bedlinskiy and Fatiha Benmokhtar and A. Bianconi and A. S. Biselli and F. Bossu' and S. Boiarinov and W. J. Briscoe and W. K. Brooks and D. Bulumulla and V. D. Burkert and D. S. Carman and J. C. Carvajal and A. Celentano and P. Chatagnon and T. Chetry and G. Ciullo and B. Clary and P. L. Cole and M. Contalbrigo and V. Crede and A. D'Angelo and N. Dashyan and R. De Vita and M. Defurne and A. Deur and S. Diehl and C. Dilks and C. Djalali and R. Dupre and H. Egiyan and M. Ehrhart and A. El Alaoui and L. El Fassi and P. Eugenio and S. Fegan and R. Fersch and A. Filippi and T. A. Forest and Y. Ghandilyan and G. Gavalian and G. P. Gilfoyle and K. L. Giovanetti and F. X. Girod and D. I. Glazier and E. Golovatch and R. W. Gothe and K. A. Griffioen and M. Guidal and L. Guo and K. Hafidi and H. Hakobyan and M. Hattawy and T. B. Hayward and D. Heddle and K. Hicks and A. Hobart and M. Holtrop and Q. Huang and Y. Ilieva and D. G. Ireland and B. S. Ishkhanov and E. L. Isupov and D. Jenkins and H. S. Jo and K. Joo and D. Keller and A. Khanal and M. Khandaker and C. W. Kim and W. Kim and F. J. Klein and V. Kubarovsky and S. E. Kuhn and L. Lanza and M. Leali and P. Lenisa and K. Livingston and I . J . D. MacGregor and D. Marchand and N. Markov and L. Marsicano and V. Mascagna and B. McKinnon and R. G. Milner and T. Mineeva and V. Mokeev and C. Mullen and C. Munoz Camacho and K. Neupane and G. Niculescu and T. O'Connell and M. Osipenko and M. Paolone and L. L. Pappalardo and R. Paremuzyan and K. Park and E. Pasyuk and W. Phelps and D. Pocanic and O. Pogorelko and J. Poudel and Y. Prok and B. A. Raue and M. Ripani and J. Ritman and A. Rizzo and P. Rossi and F. Sabatie' and C. Salgado and A. Schmidt and R. A. Schumacher and Y. G. Sharabian and U. Shrestha and O. Soto and N. Sparveris and S. Stepanyan and I. I. Strakovsky and S. Strauch and N. Tyler and M. Ungaro and L. Venturelli and H. Voskanyan and A. Vossen and E. Voutier and D. Watts and K. Wei and X. Wei and M. H. Wood and B. Yale and N. Zachariou and J. Zhang and Z. W. Zhao},
journal= {arXiv preprint arXiv:2010.09544},
year = {2021}
}