arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2210.12295hep-phhep-exnucl-th
收藏

通过高横向动量Hadrons获取胶子极化

Accessing gluon polarization with high-$P_T$ hadrons in SIDIS

Wichita State University(威奇托州立大学);South China Normal University(华南师范大学);University of California, Los Angeles(加州大学洛杉矶分校);Jefferson Lab(杰弗逊实验室);University of Adelaide(阿德莱德大学)

R. M. Whitehill, Yiyu Zhou, N. Sato, W. Melnitchouk

AI总结:

利用极化半inclusive deep-inelastic scattering研究高横向动量hadrons,以约束胶子helicity分布Δg对parton动量分数x的依赖性,识别未来实验的关键动能学。

摘要:

最近的全球QCD分析发现质子中胶子helicity分布Δg存在负解Δg,同时存在传统Δg>0解。我们考虑极化半inclusive deep-inelastic scattering用于高横向动量hadrons,以约束Δg对parton动量分数x的依赖性。聚焦双纵向自旋不对称性,识别Jefferson Lab和电子离子对撞机未来实验的关键动能学,这些实验对极化胶子通道敏感,可区分不同Δg行为。

英文摘要:

A recent global QCD analysis of jet production and other polarized scattering data has found the presence of negative solutions for the gluon helicity distribution in the proton, $Δg$, along with the traditional $Δg > 0$ solutions. We consider polarized semi-inclusive deep-inelastic scattering for hadrons produced with large transverse momentum as a means of constraining the dependence of $Δg$ on the parton momentum fraction, $x$. Focusing on the double longitudinal spin asymmetry, we identify the kinematics relevant for future experiments at Jefferson Lab and the Electron-Ion Collider which are particularly sensitive to the polarized gluon channel and could discriminate between the different $Δg$ behaviors.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑