半包容π介子产生的横向动量依赖性
高能物理 - 唯象学
2008-11-26 v3
摘要
测量了来自质子和氘核靶的带电π介子（π±）半包容电产生的截面，运动学范围为 ， GeV，， GeV。对于 GeV，我们发现方位角依赖性很小，与理论预期一致。对于π+和π−，氘核的 依赖性均略弱于质子。在简单模型的框架下，这意味着d夸克的初始横向动量宽度大于u夸克，并且与预期相反，最 favored 碎裂函数的横向动量宽度大于 unfavored 的碎裂函数。
引用
@article{arxiv.0709.3020,
title = {Transverse momentum dependence of semi-inclusive pion production},
author = {H. Mkrtchyan and P. E. Bosted and G. S. Adams and A. Ahmidouch and T. Angelescu and J. Arrington and R. Asaturyan and O. K. Baker and N. Benmouna and C. Bertoncini and H. P. Blok and W. U. Boeglin and H. Breuer and M. E. Christy and S. H. Connell and Y. Cui and M. M. Dalton and S. Danagoulian and D. Day and T. Dodario and J. A. Dunne and D. Dutta and N. El Khayari and R. Ent and H. C. Fenker and V. V. Frolov and L. Gan and D. Gaskell and K. Hafidi and W. Hinton and R. J. Holt and T. Horn and G. M. Huber and E. Hungerford and X. Jiang and M. Jones and K. Joo and N. Kalantarians and J. J. Kelly and C. E. Keppel and V. Kubarovsky and Y. Li and Y. Liang and S. Malace and P. Markowitz and E. McGrath and P. McKee and D. G. Meekins and B. Moziak and T. Navasardyan and G. Niculescu and I. Niculescu and A. K. Opper and T. Ostapenko and P. E. Reimer and J. Reinhold and J. Roche and S. E. Rock and E. Schulte and E. Segbefia and C. Smith and G. R. Smith and P. Stoler and V. Tadevosyan and L. Tang and M. Ungaro and A. Uzzle and S. Vidakovic and A. Villano and W. F. Vulcan and M. Wang and G. Warren and F. Wesselmann and B. Wojtsekhowski and S. A. Wood and C. Xu and L. Yuan and X. Zheng and H. Zhu},
journal= {arXiv preprint arXiv:0709.3020},
year = {2008}
}
备注
15 pages, 4 figures. Fit form changed to include Cahn effect Minor revisions. Added one new figure